[Search] [pdf|bibtex] [Tracker] [WG] [Email] [Nits]

Versions: 00 01 02 03 04 05 06 07 08 09 rfc2662                         
INTERNET-DRAFT           ADSL Line MIB          Gregory Bathrick
                                                AG Communication Systems
                                                August 7, 1998






                     Definitions of Managed Objects
                           for the ADSL Lines

                            August 7, 1998

                   draft-ietf-adslmib-adsllinemib-00.txt




   1.  Status of this Memo

   This document is an Internet-Draft.  Internet-Drafts are working
   documents of the Internet Engineering Task Force (IETF), its areas,
   and its working groups. Note that other groups may also distribute
   working documents as Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as ``work in progress.''

   To view the entire list of current Internet-Drafts, please check
   the "1id-abstracts.txt" listing contained in the Internet-Drafts
   Shadow Directories on ftp.is.co.za (Africa), ftp.nordu.net
   (Northern Europe), ftp.nis.garr.it (Southern Europe), munnari.oz.au
   (Pacific Rim), ftp.ietf.org (US East Coast), or ftp.isi.edu
   (US West Coast).

   2.  Abstract

   This document defines a standard SNMP MIB for ADSL lines based on the
   ADSL Forum standard data model [9]. The model assumed by this MIB is
   that the SNMP agent's perspective is from the ATU-C side which acts
   as a proxy for the ATU-R.  Each MIB instance includes information for
   both ends of a single line, i.e., both the ATU-C and ATU-R.

   It should be noted that the first version of this document was
   derived from work completed by the ADSL Forum's Network Management
   working group and documented in ADSL Forum TR-006 "SNMP-based ADSL



Expires February 1999                                           [Page 1]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   Line MIB"[9].   See Acknowledgement Section for a list individuals of
   those involved with this effort.


   3.  The SNMP Network Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   o    An overall architecture, described in RFC 2271 [13].

   o    Mechanisms for describing and naming objects and events for
        the purpose of management.  The first version of this
        Structure of Management Information (SMI) is called SMIv1 and
        described in RFC 1155 [14], RFC 1212 [15] and RFC 1215 [16].
        The second version, called SMIv2, is described in RFC 1902
        [1], RFC 1903 [2] and RFC 1904 [17].

   o    Message protocols for transferring management information.
        The first version of the SNMP message protocol is called
        SNMPv1 and described in RFC 1157 [7].  A second version of
        the SNMP message protocol, which is not an Internet standards
        track protocol, is called SNMPv2c and described in RFC 1901
        [18] and RFC 1906 [19].  The third version of the message
        protocol is called SNMPv3 and described in RFC 1906 [19], RFC
        2272 [20] and RFC 2274 [21].

   o    Protocol operations for accessing management information.
        The first set of protocol operations and associated PDU
        formats is described in RFC 1157 [7].  A second set of
        protocol operations and associated PDU formats is described
        in RFC 1905 [9].

   o    A set of fundamental applications described in RFC 2273 [22]
        and the view-based access control mechanism described in RFC
        2275 [23].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.

   This document specifies a MIB module that is compliant to the SMIv2.
   A MIB conforming to the SMIv1 can be produced through the appropriate
   translations.  The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (e.g., use of Counter64).  Some machine
   readable information in SMIv2 will be converted into textual
   descriptions in SMIv1 during the translation process.  However, this



Expires February 1999                                           [Page 2]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   loss of machine readable information is not considered to change the
   semantics of the MIB.


   4.  Object Definitions

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the subset of Abstract Syntax Notation One (ASN.1)
   defined in the SMI.  In particular, each object type is named by an
   OBJECT IDENTIFIER, an administratively assigned name.  The object
   type together with an object instance serves to uniquely identify a
   specific instantiation of the object.  For human convenience, we
   often use a textual string, termed the descriptor, to also refer to
   the object type.


   5.  Introduction

   This document describes an ADSL Line MIB which is intended to work
   within the SNMP Network Management Framework (section 3).  All MIB
   definitions are backward compatible for SNMPv1 implementation.

   The MIB definitions are attached. The MIB will eventually be located
   in the MIB tree under MIB 2 transmission, as discussed in the MIB-2
   Integration (RFCs 1213 [4] and 2233 [5]) section of this document.
   Until approved by the IETF, vendors may also choose to support it
   under their own enterprise IDs.

             adslLineMIB MODULE-IDENTITY ::= { VendorEnterpriseID nnn}




   6.  Relationship of the ADSL LINE MIB with standard MIBs

   This section outlines the relationship of this MIB with other MIBs
   described in RFCs and in various degrees of "standardization".  MIB-2
   (RFC 1213 [4] and 2233 [5]) and the Entity MIB (RFC 2037 [25]) are
   discussed below.


   6.1  General MIB-2 Integration (RFCs 1213 [4] and 2233 [5])

   The ADSL LINE MIB specifies the detailed attributes of a data
   interface.  As such, it needs to integrate with MIB-2 (see [4] and
   [5]).  The IANA has assigned the following ifTypes to ADSL:




Expires February 1999                                           [Page 3]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


           IANAifType ::= TEXTUAL-CONVENTION

                   . . .

           SYNTAX  INTEGER {

                   . . .

           adsl(94),       -- Asymmetric Digital Subscriber Loop

           radsl(95),      -- Rate-Adapt. Digital Subscriber Loop

           sdsl(96),       -- Symmetric Digital Subscriber Loop

           vdsl(97),       -- Very H-Speed Digital Subscrib. Loop

           . . .

           adslInterleave(124),    -- ADSL Interleaved Channel

           adslFast(125),          -- ADSL Fast Channel

           }

   Of these, only adsl, adslFast, and adslInterleave are used with this
   MIB.  Use of radsl, sdsl, and vdsl is for further study (or they may
   have their own MIBs).

   Therefore, pending approval of the IETF, RFC 2233 [5] mandates that
   this MIB will be  accessed through mib-2.transmission.ifType as
   shown:

      adslPhysIf ::= { transmission 94 }      -- Physical tables

      adslInterIf ::= { transmission 124 }    -- Interleaved Channel
      tables

      adslFastIf ::= { transmission 125}      -- Fast Channel tables

   with each MIB branch containing the appropriate tables for that
   interface type, as discussed below. Most such tables extends the
   ifEntry table, and are indexed by ifIndex.  In addition, there are
   two "profile" tables which may be accessed by ifIndex, or may be
   accessed with a profileIndex, as discussed in section 7.4 Profiles.


   6.1.1  ADSL Interface Types




Expires February 1999                                           [Page 4]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   As shown below, three ADSL interface types are defined in this
   document, namely physical, interleaved channel, and fast channel.
   The physical interface represents characteristics of the physical
   media associated with both the ATUC and ATUR.  The interleaved and
   fast channel interface represent the characteristics of the two types
   of ADSL channels.

   For each ADSL Line, a physical interface always exists.   Depending
   on which ADSL operational configuration is present (as listed in
   Figure 5), the channel interfaces (fast or interleaved) may or may
   not be optional.

               ______                      ______
              |      |____________________|      |
              | ATUC |                    | ATUR |
              |      |____________________|      |
              |______|                    |______|

                 | <----- physical --------> |

                 | <--- fast channel ------> |

                 | <- interleaved channel -> |




                           Figure 1: ADSL Model


   6.1.2  Use of Interface MIB RFC 2233 [5]

   The following attributes are part of the mandatory
   ifGeneralInformationGroup object group specified in RFC 2233 [5], and
   are not duplicated in the ADSL MIB. Remember that these objects apply
   to the line, not either end in particular.

      ifDescr - "manufacturer's name, model number, version number"
      associated with all ADSL interface entry types

      ifType - 94, 124, or 125, for physical, interleaved, and fast
      interface entries respectively

      ifSpeed - transmit rate from the perspective of the ATU-C
      interface, aka the "downstream" rate

      ifPhysAddress - not applicable for ADSL interface entries, must be
      0-length string



Expires February 1999                                           [Page 5]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


      ifAdminStatus, ifOperStatus - normal use, supplemented by
      adslAtucCurrStatus and adslAturCurrStatus for physical interfaces
      entry types only

      ifLastChange - The value of the last state change for all ADSL
      interface entry types

      ifLinkUpDownTrapEnable - default to Enable (1) for physical layer
      entry types, and to Disable (2) for interleaved, and fast
      interface channel entry types.

      ifConnectorPresent - set to True (1) for physical layer entries,
      and to False (2) interleaved, and fast interface entry types

      ifHighSpeed - As ADSL operates at a maximum rate of about 8Mbps
      circa 1997, ifHighSpeed is irrelevant, and is set to zero.

      ifName - Textual name for the interface allowing the network
      manager ability to associate an ifEntry with a specific
      node/shelf/slot/port of the ADSL equipment.

      ifNumber - The total number of ADSL network interfaces present on
      the system.

      ifAlias - A configurable textual name for the interface allowing
      the network manager ability to associate an ifEntry with a
      specific node/shelf/slot/port of the ADSL equipment.  This
      information is held in non-volatile storage.

      ifTableLastChange - The value of sysUpTime at the time of the last
      creation or deletion of an entry in the ifTable.

   The following attributes are from the ifFixedLengthGroup [5] which is
   optional, but is the closest set to ADSL.  They may optionally be
   implemented when appropriate.

      ifInOctets, ifOutOctets - counted from the perspective of the
      ATU-C interface for all ADSL interface entry types

      ifInUnknownProtos, ifInErrors, ifOutErrors  - counted from the
      perspective of the ATU-C interface for all ADSL interface entry
      types

   The table below shows this information in a more concise format.
   "Normal" means the object is used as specified by RFC 2233.  The
   designations "i", "j", and "k" indicate three arbitrary ifIndex
   values, corresponding to the physical, interleaved, and fast entries
   for a single ADSL Line.  These designations are used throughout this



Expires February 1999                                           [Page 6]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   document.

   MIB Object         Physical Line(i)    Interleaved         Fast
                                          Channel (j)         Channel(k)
   ----------------------------------------------------------------------
   ifDescr            NORMAL              NORMAL              NORMAL

   ifType(IANA)       94                  124                 125

   ifSpeed            ATU-C               ATU-C               ATU-C
                      Line Tx             Channel Tx          Channel Tx
                      Rate                Rate                Rate

   ifPhysAddress      NULL                NULL                NULL

   ifAdminStatus      NORMAL              NORMAL              NORMAL

   ifOperStatus       NORMAL              NORMAL              NORMAL

   ifLastChange       NORMAL              NORMAL              NORMAL

   ifLinkUpDown-      NORMAL              NORMAL              NORMAL
   TrapEnable         (default:           (default:           (default:
                        Enable)             Disable)            Disable)

   ifConnectorPresent True                False               False

   ifHighSpeed        zero                zero                zero

   ifName             NORMAL              NORMAL              NORMAL

   ifNumber           NORMAL              NORMAL              NORMAL

   ifAlias            NORMAL              NORMAL              NORMAL

   ifTableLastChange  NORMAL              NORMAL              NORMAL
   ----------------------------------------------------------------------

                     Figure 2: Use of ifTable Objects


   Use the ifTest table for Diagnostic tests, which extends ifEntry.
   The adslLineMib defines ADSL-specific values for ifTestTypes and
   ifTestCodes.

   Use the ifStackTable to associate the entries for physical, fast,
   interleaved channels, and higher layers (e.g., ATM) is shown below in
   figure 3.  Use of ifStackTable is mandatory, because configuration



Expires February 1999                                           [Page 7]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   information is stored in profile tables associated with the
   physical-layer ifEntry only.  The channels ifEntrys need the
   ifStackTable to find their associated physical-layer entry and thus
   their configuration parameters.  (See Profile section, 7.4).



               ______       (ifEntry=k)        ______
              |      |      fast channel      |      |
              |      |________________________|      |
              |      |        and/or          |      |
              |      |                        |      |
              |      |     (ifEntry=j)        |      |
              |      |   interleaved channel  |      |
              |      |________________________|      |
              | ATUC |                        | ATUR |
              |      |                        |      |
              |      |     (ifEntry=i)        |      |
              |      |      physical          |      |
              |      |________________________|      |
              |______|                        |______|

                  Figure 3: Use of ifStackTable (part 1)


   The ifStackTable is then used to show the relationships between the
   various ADSL interfaces, as illustrated below in Figure 4.


                     HigherLayer   LowerLayer
                    --------------------------
                         k             i
                         j             i


                  Figure 4: Use of ifStackTable (part 2)


   6.2  Relationship with RFC 2037 [25]

   Implementation of the Entity MIB [25] is optional.  It in no way
   alters the information required in the adslLineMib, nor does it alter
   the relationship with MIB-2, ifIndex, and ifStackTable.  The Entity
   MIB introduces a standardized way of presenting the components of
   complex systems, such as a Digital Subscriber Line Access Multiplexer
   (DSLAM), that may contain multiple racks, shelves, line cards, and/or
   ports.   The Entity MIB's main goal is to present these system
   components, their containment relationship, and mapping information



Expires February 1999                                           [Page 8]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   with other MIBs such as the Interface MIB and the adslLineMib.

   If implemented, the Entity MIB should include entities for the ATU-C
   and ATU-R in the entPhysicalTable.  The MIB's entAliasMappingTable
   would  contain mapping information identifying the 'ifIndex' object
   associated with each ATU-C and ATU-R.  Also associating the
   relationship between the ifTable and Entity MIB, the entPhysicalTable
   contains an 'entPhysicalName' object, which approximates the
   semantics of the 'ifName' object from the Interface MIB.


   7.  Conventions used in the MIB


   7.1  Naming Conventions

   A. Atuc/Atur are used for the ATU-C and ATU-R.  In other RFCs, these
   are sometimes referred to as the Near End (Ne) and Far End (Fe)
   respectively, but not in this document.

   B. The terms, "transmit" and "receive", are from the perspective of
   the corresponding table's end of the line.  For example,
   adslAtucChanConfMaxTxRate defines the "downstream" rate, while
   adslAturChanConfMaxTxRate defines the "upstream" rate for a
   particular channel.

   C. There are two possible channels: fast, and interleaved.  Either
   none, one or both may be implemented on a particular ADSL Line.
   Figure 5 illustrates all possible operational configurations.

   D. Lof, Lol, Los, Lpr mean Loss of Framing, Link, Signal, and Power,
   respectively.  Lpr is used by T1E1, so it is used for consistency
   (rather than Lop).

   A Loss of Link condition is declared at the ATU-C if a Loss of Signal
   is not preceded by a 'dying-gasp' message from the ATU-R.  Note that
   Loss of Link is only supported by the ATU-C.

   E. ES means errored second. An Errored Second is any second
   containing one or more CRC anomaly, or one or more Los(s) or Severely
   Errored Frame (Sef) defect(s).

   F. A "block" is a physical-layer 'data buffer' over which CRCs are
   calculated.  For example, in DMT, the block is defined as the ADSL
   superframe.  The block duration is 250 micro-seconds so the block
   length in bytes, as defined in adslAtu*ChanCrcBlockLength, varies
   with data rate.




Expires February 1999                                           [Page 9]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   G. Atn means Attenuation, Psd is Power Spectral Density and Snr is
   Signal to Noise Ratio.

   H. LCS means line code specific, e.g.,

      o DMT = Discrete MultiTone

      o CAP = Carrierless Amplitude and Phase modulation and

      o QAM = Quadrature Amplitude Modulation

   I. Vendor (in the Inventory objects) refers to the manufacturer or
   the ATU-C or ATU-R assembly, not the modem chip vendor. When in
   doubt, use the manufacturer of the smallest field replaceable unit
   (e.g., stand-alone modem box, plug-in board).


   7.2  Structure

   The MIB has multiple parallel tables.  There are tables for:

      o line -  common attributes

      o atuc and atur status

      o atuc and atur performance

          - Current and up to 96 buckets of 15 min performance history

          - Current and Previous 1 Day bucket performance history

      o profiles - configuration parameters and alarm parameters


   Also, there are separate tables for Physical and Channel layers. Only
   one set of "channel" tables are defined, which are used for both fast
   and interleaved channels, since the attributes are the same. The
   corresponding ifType gives the proper interpretation for that
   ifEntry.

   There could have been fewer tables by combining the ATU-C and ATU-R
   information into shared tables. However, the tables are more easily
   read when there are two identical sets of data.

   The figure below lists the five possible ADSL operational
   configurations. (indicated by the value of the adslLineType).  In all
   configurations, the physical line interface entry will exist.
   However, the existence of the ADSL channel varies in each case, as



Expires February 1999                                          [Page 10]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   shown below.


       Table                         Phys     Fast  Interleaved
   ___________________________________________________________
     No Channels (1)               |  Y    |        |        |
     Fast Only (2)                 |  Y    |   Y    |        |
     Interleaved Only (3)          |  Y    |        |   Y    |
     Fast or Interleaved (4)       |  Y    |   Y    |   Y    |
     Fast and Interleaved (5)      |  Y    |   Y    |   Y    |

                 Figure 5: ADSL Operational configurations

   NOTE: In (4), channel exists of either Fast or Interleaved type, but
   not both.   the Manager may select the type of channel to be used.


   Depending on which operation configuration exists, some or all ADSL
   MIB tables are supported, as shown in below.

       Table                         Phys     Fast  Interleaved
   ___________________________________________________________
     adslLineTable                  |  Y    |        |        |
     adslAtucPhysTable              |  Y    |        |        |
     adslAturPhysTable              |  Y    |        |        |
     adslAtucChanTable              |       |   Y    |   Y    |
     adslAturChanTable              |       |   Y    |   Y    |
     adslAtucPerfDataTable          |  Y    |        |        |
     adslAturPerfDataTable          |  Y    |        |        |
     adslAtucIntervalTable          |  Y    |        |        |
     adslAturIntervalTable          |  Y    |        |        |
     adslAtucChanPerfDataTable      |       |   Y    |   Y    |
     adslAturChanPerfDataTable      |       |   Y    |   Y    |
     adslAtucChanIntervalTable      |       |   Y    |   Y    |
     adslAturChanIntervalTable      |       |   Y    |   Y    |

       Figure 6: Use of ADSL MIB Tables with various ifIndex values

   NOTE: For adslLineConfProfileTable and adslLineAlarmConfProfileTable,
   see Profile Section of this document for implementation details.


   7.3  Counters, Interval Buckets and Thresholds

   For physical-level ES, Los, Lof, Lol, Lpr and line initialization
   attempts, there are event counters, current 15-minute and one (up to
   96) 15-minute history bucket(s) of "interval-counters", as well as
   current and previous 1 Day interval-counters.



Expires February 1999                                          [Page 11]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   There is no requirement for an agent to ensure fixed relationship
   between the start of a fifteen minute and any wall clock; however
   some implementations may align the fifteen minute intervals with
   quarter hours.  Likewise, an implementation may choose to align one
   day intervals with start of a day.

   In all cases, the sum of the corresponding 15-minute interval timers
   for the current day should equal the current 1-day timers. However,
   in most cases, this will not be the sum of all 96 intervals, as they
   represent a rolling set of data.

   At the channel level, there are counters for total received blocks,
   received-and-corrected blocks, received-but-uncorrectable blocks, and
   transmitted blocks. Blocks are counted here because octets are
   counted by ifInOctets, ifOutOctets.  There are the same set of 15-
   minute and 1-day buckets as at the physical layer.

   Separate tables are provided for the 96 interval-counters. They are
   indexed by {ifIndex, AdslAtu*IntervalNumber}.

   Every physical layer object with a 15 minute current bucket also has
   a 15-min threshold trap.

   Counters are not reset when an ATU-C is reinitialized, only when the
   agent is reset or reinitialized (or under specific request outside
   the scope of this MIB).


   7.4  Profiles

   As a managed node can handle a large number of ATU-Cs (e.g., hundreds
   or perhaps thousands of ADSL lines), provisioning every parameter on
   every ATU-C may become burdensome.  In response, two MIB tables have
   been created to define ADSL equipment configuration data profiles, as
   well as a mechanism to associate the equipment to these profiles.
   This concept is similar to the one used in ATM MIB (RFC 1695[24])  to
   define ATM traffic descriptor sets.

   Profile tables may be implemented in one of two ways, but not
   simultaneously:

      o MODE-I: Dynamic Profiles - one profile shared by one or multiple
      ADSL lines.

      o MODE-II: Static Profiles - one profile per ADSL physical line
      always.





Expires February 1999                                          [Page 12]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   7.4.1  MODE-I : Dynamic Profiles

   Implementations using this mode will enable the manager to
   dynamically create and delete profiles as needed.  The index of the
   profile is an arbitrary integer in the range 1..N, where N is the
   maximum number of profiles supported by the equipment and is
   implementation specific.

   One or more ADSL lines may be configured to share parameters in
   Profile-n (adslLineConfProfileIndex = 'n') by setting their
   adslLineConfProfile objects to the value of profile's index (n).  If
   a change is made to Profile-n, all lines that refer to it will be
   re-configured to the changed parameters.

   The next figure shows an example of how this mode can be implemented.
   In the example, ADSL lines '1' and 'x' share the configuration in
   Profile-n, while line '2' uses Profile-1.  Please note that three
   entries for each ADSL line, physical layer, the fast channel, and the
   interleaved channel, are represented by "i", "j", and "k" as before.
   However, only the physical-layer entry "i" contains an adslLineTable
   entry, so only those entries contain pointers to the
   adslConfProfileEntry.  The ifStackTable (see rfc2233 [5]) must be
   used to link the channel entries to the corresponding physical layer
   entry to get the channel's configuration parameters.


   ADSL    ifIndex      ifTable                       Configuration Line
   Profile Table
   __________________________________________________________________

   1         i1         ADSL Line --           --->     Profile 1
             j1         Fast Chan    |        |
             k1         Int Chan     |        |
                                     |        ^
                                     v        |         Profile 2

   2         i2         ADSL Line ------->----
             j2         Fast Chan    |
             k2         Int Chan     |
                                     |
                                     |
                                     |
                                     v

   x         ix         ADSL Line    ------>------->    Profile X
             jx         Fast Chan  ---------------->
             kx         Int Chan
   __________________________________________________________________



Expires February 1999                                          [Page 13]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                    Figure 7: Use of Profiles in MODE-I


   The same is true for the alarm profile (not shown), although there is
   no requirement that its index (call it "m") be the same as the
   configuration profile.

   In this mode, profiles are allocated and deleted dynamically, and six
   objects:

      adslLineConfProfile, adslLineConfProfileIndexNext,
      adslLineConfProfileRowStatus, adlsLineAlarmProfile,
      adslLineAlarmConfProfileIndexNext, and
      adslLineAlarmConfProfileRowStatus

   are all used in conjunction with profiles.


   7.4.2  MODE-II : Static Profiles

   Implementations with this mode will automatically create a profile
   one-for-one with each ADSL line physical entry with the profileIndex
   being the same as the ifIndex of the corresponding ADSL line entry
   ("ix").   The Agent will not allow a Manager to create/delete
   profiles in this mode.  The adslLineConfProfile,
   adslLineConfProfileIndexNext, adslLineConfProfileRowStatus,
   adlsLineAlarmProfile, adslLineAlarmConfProfileIndexNext, and
   adslLineAlarmConfProfileRowStatus objects are not used in this mode
   as each line has a unique, fixed profile that is not shared with
   other lines.

   The figure below shows an example of this mode. In the example, ADSL
   lines '1', '2', and 'x' each have their own profiles.



   ADSL    ifIndex      ifTable                       Configuration Line
   Profile Table
   __________________________________________________________________

   1         i1         ADSL Line      ------------>  Profile 1
             j1         Fast Chan
             k1         Int Chan

   2         i2         ADSL Line      ------------>  Profile 2
             j2         Fast Chan
             k2         Int Chan




Expires February 1999                                          [Page 14]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   x         ix         ADSL Line      ------------>  Profile X
             jx         Fast Chan
             kx         Int Chan
   __________________________________________________________________

                    Figure 8: User Profiles in MODE II


   7.5  Traps

   These MIB-2 traps are required: coldStart / warmStart (per [6]) --
   which are per agent (e.g., per DSLAM in such a device), and linkUp /
   linkDown (per [5]) -- which are per interface (i.e., ADSL line).
   Note: RFC 2233 [5] recommends that linkUp / linkDown only be used at
   a physical layer ifEntry, as discussed above.

   A linkDown trap is generated whenever any of Lof, Los, Lol, or Lpr
   occurs.  At this operational point, a manager can use
   adslAtu*CurrStatus for additional detailed information. The
   corresponding linkUp trap is sent when all link failure conditions
   are cleared.

   The traps defined in this MIB are for initialization failure, rate
   change, and for the thresholds crossings associated with the
   following events: Lofs, Lols, Loss, Lprs, and ESs.  Each threshold
   has its own enable/threshold value. When that value is 0, the trap is
   disabled.

   The objects adslAtu*CurrStatus indicate, through a bitmask, all
   outstanding error conditions or that the line is operational.  Note
   that each object claims to represent the status of the modem at that
   end of the line.  However, since the SNMP agent co-resides with the
   ATU-C, adslAturCurrStatus may be incomplete. For example, when there
   are errors on the line, the ATU-R may not be able to correctly report
   this condition. Therefore, not all conditions are included in
   adslAturCurrStatus.

   A threshold trap occurs whenever the corresponding current 15-minute
   interval error counter becomes equal to the threshold value.  Since
   the current 15-minute counter are reset to 0 every 15 minutes, if the
   condition persists, the trap may recur as often as every 15 minutes.
   For example, to get a trap whenever a "loss of" event occurs (but at
   most once every 15 minutes), set the corresponding "Thresh15Min" to
   1.  The agent will generate a trap when the event originally occurs.
   Note that the NMS will get a linkDown trap, as well, if enabled.  At
   the beginning of the next 15 minute interval, the counter is reset.
   When the first second goes by, the current interval bucket will be 1,
   which equals the threshold, and the trap will be sent again.



Expires February 1999                                          [Page 15]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   The  rate change trap is invoked when the transmit rate on a channel
   either increases by adsl(x)Thresh(y)RateDown or decreases by
   adsl(x)Thresh(y)RateDown. The trap is per direction:(x) == Atuc or
   Atur, and per channel: (y) == Fast or Interleave. In other words, the
   trap is sent whenever the rate changes in either direction on either
   channel and:

                CurrTxRate >= PrevTxRate plus ThreshRateUp

                                    or

               CurrTxRate <= PrevTxRate minus ThreshRateDown



   No trap is sent on initialization.

   It can be disabled by setting the Up (and/or) Down threshold rates to
   0.

   The PrevTxRate object is set to the current value at initialization
   and when a trap is sent.  Thus rate changes are cumulative until the
   total change exceeds the threshold.


   8.  Conformance and Compliance

   See ASN.1 within.


   9.  Definitions

   ADSL-LINE-MIB DEFINITIONS ::= BEGIN

   IMPORTS
      MODULE-IDENTITY, OBJECT-TYPE, Counter32,
      Gauge32, NOTIFICATION-TYPE, Integer32,
      OBJECT-IDENTITY, transmission          FROM SNMPv2-SMI
      RowStatus, TruthValue                  FROM SNMPv2-TC
      MODULE-COMPLIANCE, OBJECT-GROUP        FROM SNMPv2-CONF
      ifIndex                                FROM IF-MIB
      Utf8String                             FROM SYSAPPL-MIB
      ;

   AdslLineProfileType ::= INTEGER

   adslMIB MODULE-IDENTITY




Expires February 1999                                          [Page 16]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   LAST-UPDATED "9808070000Z"

   ORGANIZATION "IETF ADSL-MIB WG"

   CONTACT-INFO
         "
          Gregory Bathrick
          AG Communication Systems
          2500 W Utopia Rd.
          Phoenix, AZ 85027 USA
          Tel: +1 602-582-7679
          Fax: +1 602-582-7697
          E-mail: bathricg@agcs.com

          John Burgess
          Predictive Systems, Inc.
          25A Vreeland Rd.
          Florham Park, NJ 07932 USA
          Tel: +1 201-301-5610
          Fax: +1 201-301-5699
          E-mail: jtburgess@predictive.com
         "

   DESCRIPTION
       "The MIB module defining objects for the management of a pair of
        ADSL modems at each end of the ADSL line.  Each such Line is
        indexed by ifIndex and appears as an interface on a central
        DSLAM (Digital Subscriber Line Access Mux.) Attributes on the
        ATUR are proxied by the DSLAM.

        ADSL lines may support optional Fast or Interleaved channels.
        If these are supported, additional entries corresponding to the
        supported channels must be created in the ifTable. Thus an ADSL
        line that supports both channels will have three entries in the
        ifTable, one for each physical, fast, and interleaved, whose
        ifType values are equal to adsl(94), fast(125), and
        interleaved(124), respectively. The ifStackTable is used to
        link the entries together.

        Naming Conventions:
                 Atuc -- (ATUC) modem at near (Central) end of line
                 Atur -- (ATUR) modem at Remote end of line
                 Curr -- Current
                 Prev -- Previous
                 Atn -- Attenuation
                 ES  -- Errored Second.
                 LCS -- Line Code Specific
                 Lof -- Loss of Frame



Expires February 1999                                          [Page 17]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 Lol -- Loss of Link
                 Los -- Loss of Signal
                 Lpr -- Loss of Power
                 xxxs-- interval of Seconds in which xxx occurs
                         (e.g., xxx=Lof, Los, Lpr)
                 Max -- Maximum
                 Mgn -- Margin
                 Min -- Minimum
                 Psd -- Power Spectral Density
                 Snr -- Signal to Noise Ratio
                 Tx  -- Transmit
                 Blks-- Blocks, a data unit, see
                        adslAtuXChanCrcBlockLength
         "
       REVISION      "9808070000Z"
       DESCRIPTION
           "Changes taken at the March 98 ADSL WG meeting:
               - Added  Conformance Statement
               - SNMPv3 comformance
               - RFC-2233 comformance

            Comments from Technical Advisors, Wijnen and Tesink:
               - DisplayString -> UTF-8 String
               - minimized # of mandatory performance counts
               - Corrected Syntax of current status objects.
               - Corrected use of SNMP SMI.

            Lessons learned through implementation of MIB (ADSLF TR006):
               - clarified definition of channel block size, SNR
                 Interleave Delay, Attenuation, and Output power.
               - corrected UNITS and SYNTAX of adsl rate objects,
                 Version#, VendorID.
               - added missing line activation objects.

            General editorial cleanup.

            Added Security Statement (Dave Allan)
           "

   ::= { transmission 94 }

   adslLineMib OBJECT IDENTIFIER ::= { adslMIB 1 }

   adslMibObjects OBJECT IDENTIFIER ::= { adslLineMib 1 }

         adslLineTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslLineEntry
             MAX-ACCESS      not-accessible



Expires February 1999                                          [Page 18]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS          current
             DESCRIPTION
                 "This table includes common attributes describing
                 both ends of the line.  It is required for all ADSL
                 physical interfaces.  ADSL physical interfaces are
                 those ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 1 }

         adslLineEntry   OBJECT-TYPE
             SYNTAX          AdslLineEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in adslLineTable."
             INDEX           { ifIndex }
         ::= { adslLineTable 1 }

         AdslLineEntry ::=
             SEQUENCE {
                 adslLineCoding           INTEGER,
                 adslLineType             INTEGER,
                 adslLineSpecific         OBJECT IDENTIFIER,
                 adslLineConfProfile      AdslLineProfileType,
                 adslLineAlarmConfProfile AdslLineProfileType
             }

         adslLineCoding OBJECT-TYPE
             SYNTAX      INTEGER {
                 other (1),
                 dmt (2), -- Discrete MultiTone
                 cap (3), -- Carrierless Amplitude & Phase modulation
                 qam (4)  -- Quadrature Amplitude Modulation
             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Specifies the ADSL coding type used on this line.
                  Other types may be added in the future."
         ::= { adslLineEntry 1 }

        adslLineType OBJECT-TYPE
             SYNTAX      INTEGER {
                 noChannel (1),        -- no channels exist
                 fastOnly (2),         -- fast channel exists only
                 interleavedOnly (3),  -- interleaved channel exists
                                       -- only
                 fastOrInterleaved (4),-- either fast or interleaved
                                       -- channels can exist, but
                                       -- only one at any time



Expires February 1999                                          [Page 19]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 fastAndInterleaved (5)-- both fast or interleaved
                                       -- channels exist
             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Defines the type of ADSL physical line
                  entity that exists, by defining whether and how
                  the line is channelized.  If the line is channelized,
                  a value other than noChannel(1),  this object
                  defines which channel type(s) are supported.

                  In the case that the line is channelized, the manager
                  can use the ifStackTable to determine the ifIndex for
                  the associated channel(s)."
         ::= { adslLineEntry 2 }

         adslLineSpecific OBJECT-TYPE
             SYNTAX      OBJECT IDENTIFIER
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "OID instance in vendor-specific MIB. The Instance may
                 be used to determine shelf/slot/port of the ATUC
                 interface in a DSLAM."
         ::= { adslLineEntry 3 }

        adslLineConfProfile OBJECT-TYPE
             SYNTAX      AdslLineProfileType
             MAX-ACCESS  read-write
             STATUS      current
             DESCRIPTION
                 "The value of this object identifies the row
                 in the ADSL Line Configuration Profile Table,
                 (adslLineConfProfileTable), which applies for this
                 ADSL line, and channels if applicable.   In the case
                 which the configuration profile has not been set, the
                 value will be set to '0'.

                 If the implementator of this MIB has chosen not
                 to implement 'dynamic assignment' of profiles, this
                 object is not useful and should return noSuchObject
                 upon SNMP request."
         ::= { adslLineEntry 4 }

        adslLineAlarmConfProfile OBJECT-TYPE
             SYNTAX      AdslLineProfileType
             MAX-ACCESS  read-write



Expires February 1999                                          [Page 20]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                "The value of this object identifies the row
                 in the ADSL Line Alarm Configuration Profile Table,
                 (adslLineAlarmConfProfileTable), which applies to this
                 ADSL line, and channels if applicable.  In the case
                 which the configuration profile has not been set, the
                 value will be set to '0'.

                 If the implementator of this MIB has chosen not
                 to implement 'dynamic assignment' of profiles, this
                 object is not useful and should return noSuchObject
                 upon SNMP request."
         ::= { adslLineEntry 5 }

         adslAtucPhysTable       OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAtucPhysEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUC.
                 Each row contains the Physical Layer Parameters
                 table for that ATUC. ADSL physical interfaces are
                 those ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 2 }

         adslAtucPhysEntry       OBJECT-TYPE
             SYNTAX          AdslAtucPhysEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAtucPhysTable."
             INDEX           { ifIndex }
         ::= { adslAtucPhysTable 1 }

         AdslAtucPhysEntry ::=
             SEQUENCE {
                 adslAtucInvSerialNumber         Utf8String,
                 adslAtucInvVendorID             Utf8String,
                 adslAtucInvVersionNumber        Utf8String,
                 adslAtucCurrSnrMgn              Integer32,
                 adslAtucCurrAtn                 Integer32,
                 adslAtucCurrStatus              BITS,
                 adslAtucCurrOutputPwr           Integer32,
                 adslAtucCurrAttainableRate      Integer32
             }

         -- inventory group
         --



Expires February 1999                                          [Page 21]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         -- These items should describe the lowest level identifiable
         -- component, be it a stand-alone modem, a card in a rack,
         -- a child-board, etc.
         --
         adslAtucInvSerialNumber OBJECT-TYPE
             SYNTAX      Utf8String
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Vendor specific string that identifies the vendor
                 equipment."
         ::= { adslAtucPhysEntry 1 }

         adslAtucInvVendorID OBJECT-TYPE
             SYNTAX      Utf8String
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The vendor ID assigned by T1E1.413 according to its
                 Annex D.[10]"
         ::= { adslAtucPhysEntry 2 }

         adslAtucInvVersionNumber OBJECT-TYPE
             SYNTAX      Utf8String
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Vendor specific version number sent by this ATU as
                 part of the initialization messages."
         ::= { adslAtucPhysEntry 3 }

         -- current status group
         --
         adslAtucCurrSnrMgn OBJECT-TYPE
             SYNTAX      Integer32(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Noise Margin as seen by this ATU with respect to its
                 received signal in tenth dB."
         ::= { adslAtucPhysEntry 4 }

         adslAtucCurrAtn OBJECT-TYPE
             SYNTAX      Integer32(0..630)
             UNITS       "tenth dB"
             MAX-ACCESS  read-only
             STATUS      current



Expires February 1999                                          [Page 22]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             DESCRIPTION
                 "Measured difference in the total power transmitted by
                 the peer ATU and the total power received by this ATU.
                 This value is determined in accordance with
                 T1.413[10]."
         ::= { adslAtucPhysEntry 5 }

        adslAtucCurrStatus OBJECT-TYPE
             SYNTAX      BITS {
                               noDefect(0),
                               lossOfFraming(1),
                               lossOfSignal(2),
                               lossOfPower(3),
                               lossOfLink(4),
                               lossOfSignalQuality(5),
                               dataInitFailure(6),
                               configInitFailure(7),
                               protocolInitFailure(8),
                               noPeerAtuPresent(9)
                              }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Status indicates current state ATUC line.  This is a
                 bit-map of possible conditions.  The various bit
                 positions are:

          0      noDefect             There no defects on the line

          1      lossOfFraming        ATUC failure due to not
                                      receiving valid frame.

          2      lossOfSignal         ATUC failure due to not
                                      receiving signal.

          3      lossOfPower          ATUC failure due to loss of
                                      power.
                                      Note: the Agent may still
                                      function.

          4      lossOfLink           ATUC failure due to inability
                                      to link with ATUR.

          5      lossOfSignalQuality  Loss of Signal Quality is
                                      declared when the Noise Margin
                                      falls below the Minimum Noise
                                      Margin, or the bit-error-rate
                                      exceeds 10^-7.



Expires February 1999                                          [Page 23]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


          6      dataInitFailure      ATUC failure during
                                      initialization due to bit
                                      errors corrupting startup
                                      exchange data.

          7      configInitFailure    ATUC failure during
                                      initialization due to peer
                                      ATU not able to support
                                      requested configuration

          8      protocolInitFailure  ATUC failure during
                                      initialization due to
                                      incompatible protocol used by
                                      the peer ATU.

          9      noPeerAtuPresent     ATUC failure during
                                      initialization due to no
                                      activation sequence detected
                                      from peer ATU.

                 This is intended to supplement ifOperStatus."
         ::= { adslAtucPhysEntry 6 }

         adslAtucCurrOutputPwr OBJECT-TYPE
             SYNTAX      Integer32(0..310)
             UNITS       "tenth dBm"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Measured total output power transmitted by this ATU.
                 This is the measurement that was reported during
                 the last activation sequence."
         ::= { adslAtucPhysEntry 7 }

         adslAtucCurrAttainableRate OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Indicates the maximum currently attainable data rate
                  by the ATU.  This value will be equal or greater than
                  the current line rate."
         ::= { adslAtucPhysEntry 8 }

         adslAturPhysTable        OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAturPhysEntry
             MAX-ACCESS      not-accessible



Expires February 1999                                          [Page 24]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUR
                 Each row contains the Physical Layer Parameters
                 table for that ATUR. ADSL physical interfaces are
                 those ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 3 }

         adslAturPhysEntry       OBJECT-TYPE
             SYNTAX          AdslAturPhysEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAturPhysTable."
             INDEX           { ifIndex }
         ::= { adslAturPhysTable 1 }

         AdslAturPhysEntry ::=
             SEQUENCE {
                 adslAturInvSerialNumber         Utf8String,
                 adslAturInvVendorID             Utf8String,
                 adslAturInvVersionNumber        Utf8String,
                 adslAturCurrSnrMgn              Integer32,
                 adslAturCurrAtn                 Integer32,
                 adslAturCurrStatus              BITS,
                 adslAturCurrOutputPwr           Integer32,
                 adslAturCurrAttainableRate      Integer32
             }

         -- inventory group
         --
         adslAturInvSerialNumber OBJECT-TYPE
             SYNTAX      Utf8String
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Vendor specific string that identifies the vendor
                 equipment."
         ::= { adslAturPhysEntry 1 }

         adslAturInvVendorID OBJECT-TYPE
             SYNTAX      Utf8String
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The vendor ID assigned by T1E1.413 according to its
                 Annex D."
         ::= { adslAturPhysEntry 2 }




Expires February 1999                                          [Page 25]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         adslAturInvVersionNumber OBJECT-TYPE
             SYNTAX      Utf8String
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Vendor specific version number sent by this ATU as
                 part of the initialization messages."
         ::= { adslAturPhysEntry 3 }

         -- current status group
         --
         adslAturCurrSnrMgn OBJECT-TYPE
             SYNTAX      Integer32(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Noise Margin as seen by this ATU with respect to its
                 received signal.  This value is determined in
                 accordance with T1.413 [10]."
         ::= { adslAturPhysEntry 4 }

         adslAturCurrAtn OBJECT-TYPE
             SYNTAX      Integer32(0..630)
             UNITS       "tenth dB"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Measured difference in the total power transmitted by
                 the peer ATU and the total power received by this ATU.
                 This value is determined in accordance with
                 T1.413[10]."
         ::= { adslAturPhysEntry 5 }

        adslAturCurrStatus OBJECT-TYPE
             SYNTAX     BITS {
                              noDefect(0),
                              lossOfFraming(1),
                              lossOfSignal(2),
                              lossOfPower(3),
                              lossOfSignalQuality(4)
                             }
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Status indicates current state ATUR line.  This is a
                 bit-map of possible conditions.  Due to the isolation
                 of the ATUR when line problems occur, many state



Expires February 1999                                          [Page 26]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 conditions like loss of power, loss of quality signal,
                 and initialization errors,  can not be determined.
                 While trouble shooting ATUR, also use object,
                 adslAtucCurrStatus.  The various bit positions are:

          0      noDefect             There no defects on the line

          1      lossOfFraming        ATUR failure due to not
                                      receiving valid frame

          2      lossOfSignal         ATUR failure due to not
                                      receiving signal

          3      lossOfPower          ATUR failure due to loss of
                                      power

          4      lossOfSignalQuality  Loss of Signal Quality is
                                      declared when the Noise Margin
                                      falls below the Minimum Noise
                                      Margin, or the
                                      bit-error-rate exceeds 10^-7.

                 This is intended to supplement ifOperStatus."
         ::= { adslAturPhysEntry 6 }


         adslAturCurrOutputPwr OBJECT-TYPE
             SYNTAX      Integer32(0..310)
             UNITS       "tenth dBm"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Measured total output power transmitted by this ATU.
                  This is the measurement that was reported during
                  the last activation sequence."
         ::= { adslAturPhysEntry 7 }

         adslAturCurrAttainableRate OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Indicates the maximum currently attainable data rate
                 by the ATU.  This value will be equal or greater than
                 the current line rate."
         ::= { adslAturPhysEntry 8 }




Expires February 1999                                          [Page 27]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         adslAtucChanTable       OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAtucChanEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUC channel.
                 ADSL channel interfaces are those ifEntries
                 where ifType is equal to adslInterleave(124)
                 or adslFast(125)."
         ::= { adslMibObjects 4 }

         adslAtucChanEntry       OBJECT-TYPE
             SYNTAX          AdslAtucChanEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAtucChanTable."
             INDEX           { ifIndex }
         ::= { adslAtucChanTable 1 }

         AdslAtucChanEntry ::=
             SEQUENCE {
                 adslAtucChanInterleaveDelay     Gauge32,
                 adslAtucChanCurrTxRate          Gauge32,
                 adslAtucChanPrevTxRate          Gauge32,
                 adslAtucChanCrcBlockLength      Gauge32
             }

         -- current group
         --
         adslAtucChanInterleaveDelay OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "milli-seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Interleave Delay for this channel.

                 Interleave delay applies only to the
                 interleave channel and defines the mapping
                 (relative spacing) between subsequent input
                 bytes at the interleaver input and their placement
                 in the bit stream at the interleaver output.
                 Larger numbers provide greater separation between
                 consecutive input bytes in the output bit stream
                 allowing for improved impulse noise immunity at
                 the expense of payload latency.

                 In the case where the ifType is Fast(125), use



Expires February 1999                                          [Page 28]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 noSuchObject."
         ::= { adslAtucChanEntry 1 }

         adslAtucChanCurrTxRate  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "bps"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Actual transmit rate on this channel."
         ::= { adslAtucChanEntry 2 }

         adslAtucChanPrevTxRate OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS        "bps"
             MAX-ACCESS  accessible-for-notify
             STATUS      current
             DESCRIPTION
                 "The rate at the time of the last
                 adslAtucRateChangeTrap event. It is also set at
                 initialization to prevent a trap being sent.

                 Rate changes less than adslAtucThresh(*)RateDown
                 or less than adslAtucThresh(*)RateUp will not
                 cause a trap or cause this object to change.
                 (*) == Fast or Interleave.
                 See AdslLineAlarmConfProfileEntry."
         ::= { adslAtucChanEntry 3 }

         adslAtucChanCrcBlockLength OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS        "byte"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Indicates the length of the channel data-block
                 on which the CRC operates.  Refer to Line Code
                 Specific MIBs, [11] and [12] for more
                 information."
         ::= { adslAtucChanEntry 4 }

        adslAturChanTable       OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAturChanEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUR channel.
                 ADSL channel interfaces are those ifEntries



Expires February 1999                                          [Page 29]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 where ifType is equal to adslInterleave(124)
                 or adslFast(125)."
         ::= { adslMibObjects 5 }

         adslAturChanEntry       OBJECT-TYPE
             SYNTAX          AdslAturChanEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAturChanTable."
             INDEX           { ifIndex }
         ::= { adslAturChanTable 1 }

         AdslAturChanEntry ::=
             SEQUENCE {
                 adslAturChanInterleaveDelay     Gauge32,
                 adslAturChanCurrTxRate          Gauge32,
                 adslAturChanPrevTxRate          Gauge32,
                 adslAturChanCrcBlockLength      Gauge32
             }

         -- current group
         --
         adslAturChanInterleaveDelay OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "milli-seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Interleave Delay for this channel.

                 Interleave delay applies only to the
                 interleave channel and defines the mapping
                 (relative spacing) between subsequent input
                 bytes at the interleaver input and their placement
                 in the bit stream at the interleaver output.
                 Larger numbers provide greater separation between
                 consecutive input bytes in the output bit stream
                 allowing for improved impulse noise immunity at
                 the expense of payload latency.

                 In the case where the ifType is Fast(125), use
                 noSuchObject."
         ::= { adslAturChanEntry 1 }

         adslAturChanCurrTxRate  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "bps"
             MAX-ACCESS  read-only



Expires February 1999                                          [Page 30]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                 "Actual transmit rate on this channel."
         ::= { adslAturChanEntry 2 }

         adslAturChanPrevTxRate OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "bps"
             MAX-ACCESS  accessible-for-notify
             STATUS      current
             DESCRIPTION
                "The rate at the time of the last
                 adslAturRateChangeTrap event. It is also set at
                 initialization to prevent a trap being sent.

                 Rate changes less than adslAturThresh(*)RateDown
                 or less than adslAturThresh(*)RateUp will not
                 cause a trap or cause this object to change.
                 (*) == Fast or Interleave.
                 See AdslLineAlarmConfProfileEntry."
         ::= { adslAturChanEntry 3 }

         adslAturChanCrcBlockLength OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Indicates the length of the channel data-block
                 on which the CRC operates.  Refer to Line Code
                 Specific MIBs, [11] and [12] for more
                 information."
         ::= { adslAturChanEntry 4 }

         adslAtucPerfDataTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAtucPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUC.
                 ADSL physical interfaces are
                 those ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 6 }

         adslAtucPerfDataEntry       OBJECT-TYPE
             SYNTAX          AdslAtucPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in adslAtucPerfDataTable."



Expires February 1999                                          [Page 31]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             INDEX           { ifIndex }
         ::= { adslAtucPerfDataTable 1 }

         AdslAtucPerfDataEntry ::=
             SEQUENCE {
                 adslAtucPerfLofs                Counter32,
                 adslAtucPerfLoss                Counter32,
                 adslAtucPerfLols                Counter32,
                 adslAtucPerfLprs                Counter32,
                 adslAtucPerfESs                 Counter32,
                 adslAtucPerfInits               Counter32,
                 adslAtucPerfValidIntervals      INTEGER,
                 adslAtucPerfInvalidIntervals    INTEGER,
                 adslAtucPerfCurr15MinTimeElapsed INTEGER,
                 adslAtucPerfCurr15MinLofs       Gauge32,
                 adslAtucPerfCurr15MinLoss       Gauge32,
                 adslAtucPerfCurr15MinLols       Gauge32,
                 adslAtucPerfCurr15MinLprs       Gauge32,
                 adslAtucPerfCurr15MinESs        Gauge32,
                 adslAtucPerfCurr15MinInits      Gauge32,
                 adslAtucPerfCurr1DayTimeElapsed INTEGER,
                 adslAtucPerfCurr1DayLofs        Gauge32,
                 adslAtucPerfCurr1DayLoss        Gauge32,
                 adslAtucPerfCurr1DayLols        Gauge32,
                 adslAtucPerfCurr1DayLprs        Gauge32,
                 adslAtucPerfCurr1DayESs         Gauge32,
                 adslAtucPerfCurr1DayInits       Gauge32,
                 adslAtucPerfPrev1DayMoniSecs    INTEGER,
                 adslAtucPerfPrev1DayLofs        Gauge32,
                 adslAtucPerfPrev1DayLoss        Gauge32,
                 adslAtucPerfPrev1DayLols        Gauge32,
                 adslAtucPerfPrev1DayLprs        Gauge32,
                 adslAtucPerfPrev1DayESs         Gauge32,
                 adslAtucPerfPrev1DayInits       Gauge32
             }

         -- Event Counters
         --
         -- Also see adslAtucIntervalTable for 15 minute interval
         -- elapsed counters.
         --
         adslAtucPerfLofs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Framing failures since
                 agent reset."



Expires February 1999                                          [Page 32]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslAtucPerfDataEntry 1 }

         adslAtucPerfLoss  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Signal failures since
                 agent reset."
         ::= { adslAtucPerfDataEntry 2 }

         adslAtucPerfLols OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Link failures since
                 agent reset."
         ::= { adslAtucPerfDataEntry 3 }

         adslAtucPerfLprs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Power failures since
                 agent reset."
         ::= { adslAtucPerfDataEntry 4 }

         adslAtucPerfESs OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Errored Seconds since agent
                 reset.  The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAtucPerfDataEntry 5 }

         adslAtucPerfInits OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the line initialization attempts since
                 agent reset. Includes both successful and failed
                 attempts."



Expires February 1999                                          [Page 33]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslAtucPerfDataEntry 6 }


         -- general 15 min interval information
         --
         adslAtucPerfValidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of previous 15-minute intervals in the
                 adslAtucInterval Table for which valid data
                 has been stored. This value will be equal to the
   maximum
                 number of intervals that are kept (n) unless the device
                 was brought online within the last (nx15) minutes. In
                 the case where the agent is a proxy, it is possible
                 that some intervals are unavailable. In this case,
                 this interval is the maximum interval for which valid
                 data is available."
         ::= { adslAtucPerfDataEntry 7 }

         adslAtucPerfInvalidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of 15 minute intervals which no valid data
                 is available."
         ::= { adslAtucPerfDataEntry 8 }

         -- 15 min current performance group
         --
         adslAtucPerfCurr15MinTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..899)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Total elapsed seconds in this interval.
                 A full interval is 900 seconds."
         ::= { adslAtucPerfDataEntry 9 }

         adslAtucPerfCurr15MinLofs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current



Expires February 1999                                          [Page 34]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Framing."
         ::= { adslAtucPerfDataEntry 10 }

         adslAtucPerfCurr15MinLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Signal."
         ::= { adslAtucPerfDataEntry 11 }

         adslAtucPerfCurr15MinLols  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Link."
         ::= { adslAtucPerfDataEntry 12 }

         adslAtucPerfCurr15MinLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Power."
         ::= { adslAtucPerfDataEntry 13 }

         adslAtucPerfCurr15MinESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds in the current 15 minute
                 interval.  The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAtucPerfDataEntry 14 }

         adslAtucPerfCurr15MinInits  OBJECT-TYPE



Expires February 1999                                          [Page 35]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the line initialization attempts in the
                 current 15 minute interval. Includes both successful
                 and failed attempts."
         ::= { adslAtucPerfDataEntry 15 }

         -- 1 Day current and previous performance group
         --
         adslAtucPerfCurr1DayTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..86399)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of seconds that have elapsed since the
                 beginning of the current 1Day interval."
         ::= { adslAtucPerfDataEntry 16 }


         adslAtucPerfCurr1DayLofs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss of
                 Framing during the current day as measured by
                 adslAtucPerfCurr1DayTimeElapsed."
         ::= { adslAtucPerfDataEntry 17 }

         adslAtucPerfCurr1DayLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss of
                 Signal during the current day as measured by
                 adslAtucPerfCurr1DayTimeElapsed."
         ::= { adslAtucPerfDataEntry 18 }

         adslAtucPerfCurr1DayLols  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only



Expires February 1999                                          [Page 36]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss of
                 Link during the current day as measured by
                 adslAtucPerfCurr1DayTimeElapsed."
         ::= { adslAtucPerfDataEntry 19 }

         adslAtucPerfCurr1DayLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss of
                 Power during the current day as measured by
                 adslAtucPerfCurr1DayTimeElapsed."
         ::= { adslAtucPerfDataEntry 20 }

         adslAtucPerfCurr1DayESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds during the current day as
                 measured by adslAtucPerfCurr1DayTimeElapsed.
                 The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAtucPerfDataEntry 21 }

         adslAtucPerfCurr1DayInits  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the line initialization attempts in the
                 day as measured by adslAtucPerfCurr1DayTimeElapsed.
                 Includes both successful and failed attempts."
         ::= { adslAtucPerfDataEntry 22 }

         adslAtucPerfPrev1DayMoniSecs OBJECT-TYPE
             SYNTAX      INTEGER(0..899)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The time in the previous 1-day interval over which



Expires February 1999                                          [Page 37]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 the performance monitoring information is actually
                 counted. This value will normally be the same as the
                 total interval duration except in a situation where
                 performance monitoring data can not be collected
                 for any reason.  Typically Elapsed 1-day Time will be
                 copied into Monitored Seconds when the 1-day roll-over
                 occurs."
         ::= { adslAtucPerfDataEntry 23 }

         adslAtucPerfPrev1DayLofs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Framing within the most recent previous
                 1 day period."
         ::= { adslAtucPerfDataEntry 24 }

         adslAtucPerfPrev1DayLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Signal within the most recent previous
                 1 day period."
         ::= { adslAtucPerfDataEntry 25 }

         adslAtucPerfPrev1DayLols  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Link within the most recent previous
                 1 day period."
         ::= { adslAtucPerfDataEntry 26 }

         adslAtucPerfPrev1DayLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION



Expires February 1999                                          [Page 38]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 "Count of seconds in the interval when there was
                 Loss of Power within the most recent previous
                 1 day period."
         ::= { adslAtucPerfDataEntry 27 }

         adslAtucPerfPrev1DayESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds within the most recent
                  previous 1 day period. The errored second parameter is
                  a count of one-second intervals containing one or more
                  crc anomalies, or one or more los or sef defects."
         ::= { adslAtucPerfDataEntry 28 }

         adslAtucPerfPrev1DayInits  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the line initialization attempts in the most
                 recent previous 1 day period. Includes both successful
                 and failed attempts."
         ::= { adslAtucPerfDataEntry 29 }


         adslAturPerfDataTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAturPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUR.
                 ADSL physical interfaces are
                 those ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 7 }

         adslAturPerfDataEntry       OBJECT-TYPE
             SYNTAX          AdslAturPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in adslAturPerfDataTable."
             INDEX           { ifIndex }
         ::= { adslAturPerfDataTable 1 }

         AdslAturPerfDataEntry ::=
             SEQUENCE {



Expires February 1999                                          [Page 39]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 adslAturPerfLofs                Counter32,
                 adslAturPerfLoss                Counter32,
                 adslAturPerfLprs                Counter32,
                 adslAturPerfESs                 Counter32,
                 adslAturPerfValidIntervals      INTEGER,
                 adslAturPerfInvalidIntervals    INTEGER,
                 adslAturPerfCurr15MinTimeElapsed INTEGER,
                 adslAturPerfCurr15MinLofs       Gauge32,
                 adslAturPerfCurr15MinLoss       Gauge32,
                 adslAturPerfCurr15MinLprs       Gauge32,
                 adslAturPerfCurr15MinESs        Gauge32,
                 adslAturPerfCurr1DayTimeElapsed INTEGER,
                 adslAturPerfCurr1DayLofs        Gauge32,
                 adslAturPerfCurr1DayLoss        Gauge32,
                 adslAturPerfCurr1DayLprs        Gauge32,
                 adslAturPerfCurr1DayESs         Gauge32,
                 adslAturPerfPrev1DayMoniSecs    INTEGER,
                 adslAturPerfPrev1DayLofs        Gauge32,
                 adslAturPerfPrev1DayLoss        Gauge32,
                 adslAturPerfPrev1DayLprs        Gauge32,
                 adslAturPerfPrev1DayESs         Gauge32
            }

         -- Event (Raw) Counters
         --
         -- Also see adslAturIntervalTable for 15 minute interval
         -- elapsed counters.
         --
         adslAturPerfLofs OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Framing failures since
                 agent reset."
         ::= { adslAturPerfDataEntry 1 }

         adslAturPerfLoss  OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Signal failures since
                 agent reset."
         ::= { adslAturPerfDataEntry 2 }




Expires February 1999                                          [Page 40]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


        adslAturPerfLprs  OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Loss of Power failures since
                 agent reset."
         ::= { adslAturPerfDataEntry 3 }

         adslAturPerfESs  OBJECT-TYPE
             SYNTAX      Counter32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of Errored Seconds since agent
                 reset.  The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAturPerfDataEntry 4 }

         -- general 15 min interval information
         --
         adslAturPerfValidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of previous 15-minute intervals in the
                 adslAturInterval Table for which valid data
                 has been stored. This value will be equal to the
                 maximum # of intervals that are kept (n) unless the
                 device was brought online within the last (nx15) min.
                 In the case where the agent is a proxy, it is possible
                 that some intervals are unavailable. In this case, this
                 interval is the maximum interval for which valid data
                 is available."
         ::= { adslAturPerfDataEntry 5 }

         adslAturPerfInvalidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of 15 minute intervals which no valid data
                 is available."
         ::= { adslAturPerfDataEntry 6 }



Expires February 1999                                          [Page 41]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         -- 15 min current performance group
         --
         adslAturPerfCurr15MinTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..899)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Total elapsed seconds in this interval.
                 A full interval is 900 seconds."
         ::= { adslAturPerfDataEntry 7 }

         adslAturPerfCurr15MinLofs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Framing."
         ::= { adslAturPerfDataEntry 8 }

         adslAturPerfCurr15MinLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Signal."
         ::= { adslAturPerfDataEntry 9 }

         adslAturPerfCurr15MinLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the current 15 minute interval
                 when there was Loss of Power."
         ::= { adslAturPerfDataEntry 10 }

         adslAturPerfCurr15MinESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION



Expires February 1999                                          [Page 42]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                "Count of Errored Seconds in the current 15 minute
                 interval.  The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAturPerfDataEntry 11 }

         -- 1 Day current and previous performance group
         --
         adslAturPerfCurr1DayTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..86399)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of seconds that have elapsed since the
                 beginning of the current 1Day interval."
         ::= { adslAturPerfDataEntry 12 }


         adslAturPerfCurr1DayLofs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss
                 of Framing during the current day as measured by
                 adslAturPerfCurr1DayTimeElapsed."
         ::= { adslAturPerfDataEntry 13 }

         adslAturPerfCurr1DayLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss
                 of Signal during the current day as measured by
                 adslAturPerfCurr1DayTimeElapsed."
         ::= { adslAturPerfDataEntry 14 }

         adslAturPerfCurr1DayLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the number of seconds when there was Loss



Expires February 1999                                          [Page 43]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 of Power during the current day as measured by
                 adslAturPerfCurr1DayTimeElapsed."
         ::= { adslAturPerfDataEntry 15 }

    adslAturPerfCurr1DayESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds during the current day as
                 measured by adslAturPerfCurr1DayTimeElapsed.
                 The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAturPerfDataEntry 16 }

         adslAturPerfPrev1DayMoniSecs OBJECT-TYPE
             SYNTAX      INTEGER(0..899)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The time in the previous 1-day interval over which
                 the performance monitoring information is actually
                 counted. This value will normally be the same as the
                 total interval duration except in a situation where
                 performance monitoring data can not be collected
                 for any reason.  Typically Elapsed 1-day Time will be
                 copied into Monitored Seconds when the 1-day roll-over
                 occurs."
         ::= { adslAturPerfDataEntry 17 }

         adslAturPerfPrev1DayLofs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Framing within the most recent previous
                 1 day period."
         ::= { adslAturPerfDataEntry 18 }

         adslAturPerfPrev1DayLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only



Expires February 1999                                          [Page 44]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Signal within the most recent previous
                 1 day period."
         ::= { adslAturPerfDataEntry 19 }

         adslAturPerfPrev1DayLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Power within the most recent previous
                 1 day period."
         ::= { adslAturPerfDataEntry 20 }

         adslAturPerfPrev1DayESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds within the most recent
                 previous 1 day period. The errored second parameter is
                 a count of one-second intervals containing one or more
                 crc anomalies, or one or more los or sef defects."
         ::= { adslAturPerfDataEntry 21 }

         adslAtucIntervalTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAtucIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUC
                 performance data collection interval.
                 ADSL physical interfaces are
                 those ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 8 }

         adslAtucIntervalEntry   OBJECT-TYPE
             SYNTAX          AdslAtucIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAtucIntervalTable."
             INDEX           { ifIndex, adslAtucIntervalNumber }
         ::= { adslAtucIntervalTable 1 }



Expires February 1999                                          [Page 45]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         AdslAtucIntervalEntry ::=
             SEQUENCE {
                 adslAtucIntervalNumber          INTEGER,
                 adslAtucIntervalLofs            Gauge32,
                 adslAtucIntervalLoss            Gauge32,
                 adslAtucIntervalLols            Gauge32,
                 adslAtucIntervalLprs            Gauge32,
                 adslAtucIntervalESs             Gauge32,
                 adslAtucIntervalInits           Gauge32,
                 adslAtucIntervalValidData       TruthValue
             }

         adslAtucIntervalNumber OBJECT-TYPE
             SYNTAX      INTEGER(1..96)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Performance Data Interval number.  1 is the
                 the most recent interval; interval 96 is 24
                 hours ago.  Intervals 2..96 are optional."
         ::= { adslAtucIntervalEntry 1 }

         adslAtucIntervalLofs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was Loss
                 of Framing."
         ::= { adslAtucIntervalEntry 2 }

         adslAtucIntervalLoss  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was Loss
                 of Signal."
         ::= { adslAtucIntervalEntry 3 }

         adslAtucIntervalLols  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION



Expires February 1999                                          [Page 46]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 "Count of seconds in the interval when there was Loss
                 of Link."
         ::= { adslAtucIntervalEntry 4 }

         adslAtucIntervalLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was Loss
                 of Power."
         ::= { adslAtucIntervalEntry 5 }

         adslAtucIntervalESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds in the interval.
                 The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAtucIntervalEntry 6 }

         adslAtucIntervalInits  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of the line initialization attempts
                 during the interval. Includes both successful
                 and failed attempts."
         ::= { adslAtucIntervalEntry 7 }

         adslAtucIntervalValidData OBJECT-TYPE
             SYNTAX TruthValue
             MAX-ACCESS read-only
             STATUS current
             DESCRIPTION
                 "This object indicates if there is valid data
                 for this interval."
         ::= { adslAtucIntervalEntry 8 }

         adslAturIntervalTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAturIntervalEntry
             MAX-ACCESS      not-accessible



Expires February 1999                                          [Page 47]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUR
                 performance data collection interval.
                 ADSL physical interfaces are those
                 ifEntries where ifType is equal to adsl(94)."
         ::= { adslMibObjects 9 }

         adslAturIntervalEntry   OBJECT-TYPE
             SYNTAX          AdslAturIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAturIntervalTable."
             INDEX           { ifIndex, adslAturIntervalNumber }
         ::= { adslAturIntervalTable 1 }

         AdslAturIntervalEntry ::=
             SEQUENCE {
                 adslAturIntervalNumber          INTEGER,
                 adslAturIntervalLofs            Gauge32,
                 adslAturIntervalLoss            Gauge32,
                 adslAturIntervalLprs            Gauge32,
                 adslAturIntervalESs             Gauge32,
                 adslAturIntervalValidData       TruthValue
             }

         adslAturIntervalNumber OBJECT-TYPE
             SYNTAX      INTEGER(1..96)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Performance Data Interval number.  1 is the
                 the most recent interval; interval 96 is 24
                 hours ago.  Intervals 2..96 are optional."
         ::= { adslAturIntervalEntry 1 }

         adslAturIntervalLofs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Framing."
         ::= { adslAturIntervalEntry 2 }

         adslAturIntervalLoss  OBJECT-TYPE
             SYNTAX      Gauge32



Expires February 1999                                          [Page 48]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Signal."
         ::= { adslAturIntervalEntry 3 }

         adslAturIntervalLprs  OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of seconds in the interval when there was
                 Loss of Power."
         ::= { adslAturIntervalEntry 4 }

         adslAturIntervalESs OBJECT-TYPE
             SYNTAX      Gauge32
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of Errored Seconds in the interval.
                 The errored second parameter is a count of
                 one-second intervals containing one or more crc
                 anomalies, or one or more los or sef defects."
         ::= { adslAturIntervalEntry 5 }

         adslAturIntervalValidData OBJECT-TYPE
             SYNTAX TruthValue
             MAX-ACCESS read-only
             STATUS current
             DESCRIPTION
                 "This object indicates if there is valid data
                 for this interval."
                ::= { adslAturIntervalEntry 6 }


         adslAtucChanPerfDataTable       OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAtucChanPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUC channel.
                 ADSL channel interfaces are those ifEntries
                 where ifType is equal to adslInterleave(124)



Expires February 1999                                          [Page 49]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 or adslFast(125)."
         ::= { adslMibObjects 10 }

         adslAtucChanPerfDataEntry       OBJECT-TYPE
             SYNTAX          AdslAtucChanPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in adslAtucChanPerfDataTable."
             INDEX           { ifIndex }
         ::= { adslAtucChanPerfDataTable 1 }

         AdslAtucChanPerfDataEntry ::=
             SEQUENCE {
                 adslAtucChanReceivedBlks                Counter32,
                 adslAtucChanTransmittedBlks             Counter32,
                 adslAtucChanCorrectedBlks               Counter32,
                 adslAtucChanUncorrectBlks               Counter32,
                 adslAtucChanPerfValidIntervals          INTEGER,
                 adslAtucChanPerfInvalidIntervals        INTEGER,
                 adslAtucChanPerfCurr15MinTimeElapsed    INTEGER,
                 adslAtucChanPerfCurr15MinReceivedBlks   Gauge32,
                 adslAtucChanPerfCurr15MinTransmittedBlks Gauge32,
                 adslAtucChanPerfCurr15MinCorrectedBlks  Gauge32,
                 adslAtucChanPerfCurr15MinUncorrectBlks  Gauge32,
                 adslAtucChanPerfCurr1DayTimeElapsed     INTEGER,
                 adslAtucChanPerfCurr1DayReceivedBlks    Gauge32,
                 adslAtucChanPerfCurr1DayTransmittedBlks Gauge32,
                 adslAtucChanPerfCurr1DayCorrectedBlks   Gauge32,
                 adslAtucChanPerfCurr1DayUncorrectBlks   Gauge32,
                 adslAtucChanPerfPrev1DayMoniSecs        INTEGER,
                 adslAtucChanPerfPrev1DayReceivedBlks    Gauge32,
                 adslAtucChanPerfPrev1DayTransmittedBlks Gauge32,
                 adslAtucChanPerfPrev1DayCorrectedBlks   Gauge32,
                 adslAtucChanPerfPrev1DayUncorrectBlks   Gauge32
             }
         -- performance group
         --
         -- Note: block is intended to be the length of the channel
         --       data-block on which the CRC operates. See
         --       adslAtucChanCrcBlockLength for more information.
         --
         adslAtucChanReceivedBlks OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this channel
                 since agent reset."



Expires February 1999                                          [Page 50]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslAtucChanPerfDataEntry 1 }

         adslAtucChanTransmittedBlks  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel since agent reset."
         ::= { adslAtucChanPerfDataEntry 2 }

         adslAtucChanCorrectedBlks  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected since agent reset.  These blocks are passed
                 on as good data."
         ::= { adslAtucChanPerfDataEntry 3 }

         adslAtucChanUncorrectBlks  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors since agent reset."
         ::= { adslAtucChanPerfDataEntry 4 }

         -- general 15 min interval information
         --
         adslAtucChanPerfValidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of previous 15-minute intervals in the
                 adslAtucChanIntervalTable Table for which valid data
                 has been stored. This value will be equal to the max
                 number of intervals that are kept (n) unless the device
                 was brought online within the last (nx15) minutes. In
                 the case where the agent is a proxy, it is possible
                 that some intervals are unavailable. In this case,
                 this interval is the maximum interval for which valid
                 data is available."
         ::= { adslAtucChanPerfDataEntry 5 }




Expires February 1999                                          [Page 51]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         adslAtucChanPerfInvalidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of 15 minute intervals which no valid data
                 is available."
         ::= { adslAtucChanPerfDataEntry 6 }

         -- 15 min current performance group
         --
         adslAtucChanPerfCurr15MinTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..899)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Total elapsed seconds in this interval.
                 A full interval is 900 seconds."
         ::= { adslAtucChanPerfDataEntry 7 }

         adslAtucChanPerfCurr15MinReceivedBlks OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this channel
                 within the current 15 minute interval."
         ::= { adslAtucChanPerfDataEntry 8 }

         adslAtucChanPerfCurr15MinTransmittedBlks OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel within the current 15 minute interval."
         ::= { adslAtucChanPerfDataEntry 9 }

         adslAtucChanPerfCurr15MinCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel within the current 15 minute
                 interval."
         ::= { adslAtucChanPerfDataEntry 10 }



Expires February 1999                                          [Page 52]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         adslAtucChanPerfCurr15MinUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel within the current 15 minute
                 interval."
         ::= { adslAtucChanPerfDataEntry 11 }

         -- 1 Day current and previous performance group
         --
         adslAtucChanPerfCurr1DayTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..86399)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of seconds that have elapsed since the
                 beginning of the current 1Day interval."
         ::= { adslAtucChanPerfDataEntry 12 }

         adslAtucChanPerfCurr1DayReceivedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this
                 channel during the current day as measured by
                 adslAtucChanPerfCurr1DayTimeElapsed."
         ::= { adslAtucChanPerfDataEntry 13 }

         adslAtucChanPerfCurr1DayTransmittedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel during the current day as measured by
                 adslAtucChanPerfCurr1DayTimeElapsed."
         ::= { adslAtucChanPerfDataEntry 14 }

         adslAtucChanPerfCurr1DayCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were



Expires February 1999                                          [Page 53]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 corrected on this channel during the current day as
                 measured by adslAtucChanPerfCurr1DayTimeElapsed."
         ::= { adslAtucChanPerfDataEntry 15 }

         adslAtucChanPerfCurr1DayUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel during the current day as
                 measured by adslAtucChanPerfCurr1DayTimeElapsed."
         ::= { adslAtucChanPerfDataEntry 16 }

         adslAtucChanPerfPrev1DayMoniSecs OBJECT-TYPE
             SYNTAX      INTEGER(0..86399)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The time in the previous 1-day interval over which
                 the performance monitoring information is actually
                 counted. This value will normally be the same as the
                 total interval duration except in a situation where
                 performance monitoring information can not be collected
                 for any reason.  Typically Elapsed 1-day Time will be
                 copied into Monitored Seconds when the 1-day roll-over
                 occurs."
         ::= { adslAtucChanPerfDataEntry 17 }

         adslAtucChanPerfPrev1DayReceivedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this
                 channel within the most recent previous 1 day
                 period."
         ::= { adslAtucChanPerfDataEntry 18 }

         adslAtucChanPerfPrev1DayTransmittedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel within the most recent previous 1 day
                 period."



Expires February 1999                                          [Page 54]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslAtucChanPerfDataEntry 19 }

         adslAtucChanPerfPrev1DayCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel within the most recent
                 previous 1 day period."
         ::= { adslAtucChanPerfDataEntry 20 }

         adslAtucChanPerfPrev1DayUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel within the most recent previous
                 1 day period."
         ::= { adslAtucChanPerfDataEntry 21 }

         adslAturChanPerfDataTable       OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAturChanPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUR channel.
                 ADSL channel interfaces are those ifEntries
                 where ifType is equal to adslInterleave(124)
                 or adslFast(125)."
         ::= { adslMibObjects 11 }

         adslAturChanPerfDataEntry       OBJECT-TYPE
             SYNTAX          AdslAturChanPerfDataEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in adslAturChanPerfDataTable."
             INDEX           { ifIndex }
         ::= { adslAturChanPerfDataTable 1 }

         AdslAturChanPerfDataEntry ::=
             SEQUENCE {
                 adslAturChanReceivedBlks                Counter32,
                 adslAturChanTransmittedBlks             Counter32,
                 adslAturChanCorrectedBlks               Counter32,
                 adslAturChanUncorrectBlks               Counter32,
                 adslAturChanPerfValidIntervals          INTEGER,



Expires February 1999                                          [Page 55]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 adslAturChanPerfInvalidIntervals        INTEGER,
                 adslAturChanPerfCurr15MinTimeElapsed    INTEGER,
                 adslAturChanPerfCurr15MinReceivedBlks   Gauge32,
                 adslAturChanPerfCurr15MinTransmittedBlks Gauge32,
                 adslAturChanPerfCurr15MinCorrectedBlks  Gauge32,
                 adslAturChanPerfCurr15MinUncorrectBlks  Gauge32,
                 adslAturChanPerfCurr1DayTimeElapsed     INTEGER,
                 adslAturChanPerfCurr1DayReceivedBlks    Gauge32,
                 adslAturChanPerfCurr1DayTransmittedBlks Gauge32,
                 adslAturChanPerfCurr1DayCorrectedBlks   Gauge32,
                 adslAturChanPerfCurr1DayUncorrectBlks   Gauge32,
                 adslAturChanPerfPrev1DayMoniSecs        INTEGER,
                 adslAturChanPerfPrev1DayReceivedBlks    Gauge32,
                 adslAturChanPerfPrev1DayTransmittedBlks Gauge32,
                 adslAturChanPerfPrev1DayCorrectedBlks   Gauge32,
                 adslAturChanPerfPrev1DayUncorrectBlks   Gauge32
             }
         -- performance group
         --
         -- Note: block is intended to be the length of the channel
         --       data-block on which the CRC operates. See
         --       adslAturChanCrcBlockLength for more information.
         --
         adslAturChanReceivedBlks OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this channel
                 since agent reset."
         ::= { adslAturChanPerfDataEntry 1 }

         adslAturChanTransmittedBlks  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel since agent reset."
         ::= { adslAturChanPerfDataEntry 2 }

         adslAturChanCorrectedBlks  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected since agent reset.  These blocks are passed



Expires February 1999                                          [Page 56]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 on as good data."
         ::= { adslAturChanPerfDataEntry 3 }

         adslAturChanUncorrectBlks  OBJECT-TYPE
             SYNTAX      Counter32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors since agent reset."
         ::= { adslAturChanPerfDataEntry 4 }

         -- general 15 min interval information
         --
         adslAturChanPerfValidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Number of previous 15-minute intervals in the
                 adslAturChanIntervalTable Table for which valid data
                 has been stored. This value will be equal to the
                 max # of intervals that are kept  (n) unless the device
                 was brought online within the last (nx15) minutes. In
                 the case where the agent is a proxy, it is possible
                 that some intervals are unavailable. In this case,
                 this interval is the maximum interval for which valid
                 data is available."
         ::= { adslAturChanPerfDataEntry 5 }

         adslAturChanPerfInvalidIntervals OBJECT-TYPE
             SYNTAX      INTEGER(0..96)
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The number of 15 minute intervals which no valid data
                 is available."
         ::= { adslAturChanPerfDataEntry 6 }

         -- 15 min current performance group
         --
         adslAturChanPerfCurr15MinTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..899)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Total elapsed seconds in this interval.



Expires February 1999                                          [Page 57]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 A full interval is 900 seconds."
         ::= { adslAturChanPerfDataEntry 7 }

         adslAturChanPerfCurr15MinReceivedBlks OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this
                 channel within the current 15 minute interval."
         ::= { adslAturChanPerfDataEntry 8 }

         adslAturChanPerfCurr15MinTransmittedBlks OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel within the current 15 minute interval."
         ::= { adslAturChanPerfDataEntry 9 }

         adslAturChanPerfCurr15MinCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel within the current 15 minute
                 interval."
         ::= { adslAturChanPerfDataEntry 10 }

         adslAturChanPerfCurr15MinUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel within the current 15 minute
                 interval."
         ::= { adslAturChanPerfDataEntry 11 }

         -- 1 Day current and previous performance group
         --
         adslAturChanPerfCurr1DayTimeElapsed OBJECT-TYPE
             SYNTAX      INTEGER(0..86399)
             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current



Expires February 1999                                          [Page 58]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             DESCRIPTION
                 "Number of seconds that have elapsed since the
                 beginning of the current 1Day interval."
         ::= { adslAturChanPerfDataEntry 12 }

         adslAturChanPerfCurr1DayReceivedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this
                 channel during the current day as measured by
                 adslAturChanPerfCurr1DayTimeElapsed."
         ::= { adslAturChanPerfDataEntry 13 }

         adslAturChanPerfCurr1DayTransmittedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel during the current day as measured by
                 adslAturChanPerfCurr1DayTimeElapsed."

         ::= { adslAturChanPerfDataEntry 14 }

         adslAturChanPerfCurr1DayCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel during the current day as
                 measured by adslAturChanPerfCurr1DayTimeElapsed."
         ::= { adslAturChanPerfDataEntry 15 }

         adslAturChanPerfCurr1DayUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel during the current day as
                 measured by adslAturChanPerfCurr1DayTimeElapsed."
         ::= { adslAturChanPerfDataEntry 16 }

         adslAturChanPerfPrev1DayMoniSecs OBJECT-TYPE
             SYNTAX      INTEGER(0..86399)



Expires February 1999                                          [Page 59]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             UNITS       "seconds"
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "The time in the previous 1-day interval over which
                 the performance monitoring information is actually
                 counted. This value will normally be the same as the
                 total interval duration except in a situation where
                 performance monitoring information can not be collected
                 for any reason.  Typically Elapsed 1-day Time will be
                 copied into Monitored Seconds when the 1-day roll-over
                 occurs."
         ::= { adslAturChanPerfDataEntry 17 }

         adslAturChanPerfPrev1DayReceivedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this
                 channel within the most recent previous 1 day
                 period."
         ::= { adslAturChanPerfDataEntry 18 }

         adslAturChanPerfPrev1DayTransmittedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel within the most recent previous 1 day
                 period."
         ::= { adslAturChanPerfDataEntry 19 }

         adslAturChanPerfPrev1DayCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel within the most recent
                 previous 1 day period."
         ::= { adslAturChanPerfDataEntry 20 }

         adslAturChanPerfPrev1DayUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current



Expires February 1999                                          [Page 60]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel within the most recent previous
                 1 day period."
         ::= { adslAturChanPerfDataEntry 21 }

         adslAtucChanIntervalTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAtucChanIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table provides one row for each ATUC channel's
                 performance data collection interval.
                 ADSL channel interfaces are those ifEntries
                 where ifType is equal to adslInterleave(124)
                 or adslFast(125)."
         ::= { adslMibObjects 12 }

         adslAtucChanIntervalEntry   OBJECT-TYPE
             SYNTAX          AdslAtucChanIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAtucIntervalTable."
             INDEX           { ifIndex, adslAtucChanIntervalNumber }
         ::= { adslAtucChanIntervalTable 1 }

         AdslAtucChanIntervalEntry ::=
             SEQUENCE {
                 adslAtucChanIntervalNumber          INTEGER,
                 adslAtucChanIntervalReceivedBlks    Gauge32,
                 adslAtucChanIntervalTransmittedBlks Gauge32,
                 adslAtucChanIntervalCorrectedBlks   Gauge32,
                 adslAtucChanIntervalUncorrectBlks   Gauge32,
                 adslAtucChanIntervalValidData       TruthValue
             }
         adslAtucChanIntervalNumber OBJECT-TYPE
             SYNTAX      INTEGER(1..96)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Performance Data Interval number.  1 is the
                 the most recent interval; interval 96 is 24
                 hours ago.  Interval 2..96 are optional."
         ::= { adslAtucChanIntervalEntry 1 }

         adslAtucChanIntervalReceivedBlks OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only



Expires February 1999                                          [Page 61]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this channel
                 during this interval."
         ::= { adslAtucChanIntervalEntry 2 }

         adslAtucChanIntervalTransmittedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel during this interval."
         ::= { adslAtucChanIntervalEntry 3 }

         adslAtucChanIntervalCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel during this interval."
         ::= { adslAtucChanIntervalEntry 4 }

         adslAtucChanIntervalUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel during this interval."
         ::= { adslAtucChanIntervalEntry 5 }

         adslAtucChanIntervalValidData OBJECT-TYPE
             SYNTAX TruthValue
             MAX-ACCESS read-only
             STATUS current
             DESCRIPTION
                 "This object indicates if there is valid data
                 for this interval."
                ::= { adslAtucChanIntervalEntry 6 }


         adslAturChanIntervalTable   OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslAturChanIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION



Expires February 1999                                          [Page 62]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 "This table provides one row for each ATUR channel's
                 performance data collection interval.
                 ADSL channel interfaces are those ifEntries
                 where ifType is equal to adslInterleave(124)
                 or adslFast(125)."
         ::= { adslMibObjects 13 }

         adslAturChanIntervalEntry   OBJECT-TYPE
             SYNTAX          AdslAturChanIntervalEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION     "An entry in the adslAturIntervalTable."
             INDEX           { ifIndex, adslAturChanIntervalNumber }
         ::= { adslAturChanIntervalTable 1 }

         AdslAturChanIntervalEntry ::=
             SEQUENCE {

                 adslAturChanIntervalNumber               INTEGER,
                 adslAturChanIntervalReceivedBlks         Gauge32,
                 adslAturChanIntervalTransmittedBlks      Gauge32,
                 adslAturChanIntervalCorrectedBlks        Gauge32,
                 adslAturChanIntervalUncorrectBlks        Gauge32,
                 adslAturChanIntervalValidData            TruthValue
             }
         adslAturChanIntervalNumber OBJECT-TYPE
             SYNTAX      INTEGER(1..96)
             MAX-ACCESS  not-accessible
             STATUS      current
             DESCRIPTION
                 "Performance Data Interval number.  1 is the
                 the most recent interval; interval 96 is 24
                 hours ago.  Interval 2..96 are optional."
         ::= { adslAturChanIntervalEntry 1 }

         adslAturChanIntervalReceivedBlks OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all encoded blocks received on this channel
                 during this interval."
         ::= { adslAturChanIntervalEntry 2 }

         adslAturChanIntervalTransmittedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current



Expires February 1999                                          [Page 63]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             DESCRIPTION
                 "Count of all encoded blocks transmitted on this
                 channel during this interval."
         ::= { adslAturChanIntervalEntry 3 }

         adslAturChanIntervalCorrectedBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with errors that were
                 corrected on this channel during this interval."
         ::= { adslAturChanIntervalEntry 4 }

         adslAturChanIntervalUncorrectBlks  OBJECT-TYPE
             SYNTAX      Gauge32
             MAX-ACCESS  read-only
             STATUS      current
             DESCRIPTION
                 "Count of all blocks received with uncorrectable
                 errors on this channel during this interval."
         ::= { adslAturChanIntervalEntry 5 }

         adslAturChanIntervalValidData OBJECT-TYPE
             SYNTAX TruthValue
             MAX-ACCESS read-only
             STATUS current
             DESCRIPTION
                 "This object indicates if there is valid data
                 for this interval."
                ::= { adslAturChanIntervalEntry 6 }


         -- Profile Group
         --
         adslLineConfProfileIndexNext OBJECT-TYPE
             SYNTAX          INTEGER
             MAX-ACCESS      read-only
             STATUS          current
             DESCRIPTION
                 "This object contains an appropriate value to
                 be used for adslLineConfProfileIndex when creating
                 entries in the adslLineConfProfileTable. The value
                 '0' indicates that no unassigned entries are
                 available. To obtain the adslLineConfProfileIndexNext
                 value for a new entry, the manager issues a
                 management protocol retrieval operation to obtain
                 the current value of this object.  After each



Expires February 1999                                          [Page 64]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 retrieval, the agent should modify the value to
                 the next unassigned index.

                 If the implementator of this MIB has chosen not
                 to implement 'dynamic assignment' of profiles, this
                 object is not useful and should return noSuchObject
                 upon SNMP request."
         ::= { adslMibObjects 14}

         adslLineConfProfileTable    OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslLineConfProfileEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table contains information on the ADSL line
                 configuration.  One entry in this table reflects a
                 profile defined by a manager which can be used to
                 configure the ADSL line."
         ::= { adslMibObjects 15}

         adslLineConfProfileEntry    OBJECT-TYPE
             SYNTAX          AdslLineConfProfileEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "Each entry consists of a list of parameters that
                 represents the configuration of an ADSL modem.  A
                 profile is created in one step with all necessary
                 parameter values and adslLineProfileRowStatus set to
                 createAndGo.  This RowStatus object is also used
                 to delete destroy profiles."
             INDEX { adslLineConfProfileIndex}
         ::= { adslLineConfProfileTable 1}

         AdslLineConfProfileEntry ::=
             SEQUENCE {
             adslLineConfProfileIndex
   AdslLineProfileType,
             adslAtucConfRateMode                    INTEGER,
             adslAtucConfRateChanRatio               INTEGER,
             adslAtucConfTargetSnrMgn                INTEGER,
             adslAtucConfMaxSnrMgn                   INTEGER,
             adslAtucConfMinSnrMgn                   INTEGER,
             adslAtucConfDownshiftSnrMgn             INTEGER,
             adslAtucConfUpshiftSnrMgn               INTEGER,
             adslAtucConfMinUpshiftTime              INTEGER,
             adslAtucConfMinDownshiftTime            INTEGER,
             adslAtucChanConfFastMinTxRate           INTEGER,



Expires February 1999                                          [Page 65]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             adslAtucChanConfInterleaveMinTxRate     INTEGER,
             adslAtucChanConfFastMaxTxRate           INTEGER,
             adslAtucChanConfInterleaveMaxTxRate     INTEGER,
             adslAtucChanConfMaxInterleaveDelay      INTEGER,
             adslAturConfRateMode                    INTEGER,
             adslAturConfRateChanRatio               INTEGER,
             adslAturConfTargetSnrMgn                INTEGER,
             adslAturConfMaxSnrMgn                   INTEGER,
             adslAturConfMinSnrMgn                   INTEGER,
             adslAturConfDownshiftSnrMgn             INTEGER,
             adslAturConfUpshiftSnrMgn               INTEGER,
             adslAturConfMinUpshiftTime              INTEGER,
             adslAturConfMinDownshiftTime            INTEGER,
             adslAturChanConfFastMinTxRate           INTEGER,
             adslAturChanConfInterleaveMinTxRate     INTEGER,
             adslAturChanConfFastMaxTxRate           INTEGER,
             adslAturChanConfInterleaveMaxTxRate     INTEGER,
             adslAturChanConfMaxInterleaveDelay      INTEGER,
             adslLineConfProfileRowStatus            RowStatus
         }

         adslLineConfProfileIndex    OBJECT-TYPE
                 SYNTAX          AdslLineProfileType
                 MAX-ACCESS      not-accessible
                 STATUS          current
                 DESCRIPTION
                 "This object is used by the line configuration table
                 in order to identify a row of this table"
         ::= { adslLineConfProfileEntry 1 }

         adslAtucConfRateMode OBJECT-TYPE
             SYNTAX      INTEGER {
                 fixed (1),              -- no rate adaptation
                 adaptAtStartup (2),     -- perform rate adaptation
                                         -- only at initialization
                 adaptAtRuntime (3)      -- perform rate adaptation at
                                         -- any time (i.e., RADSL)
             }
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Defines what form of transmit rate adaptation is
                 configured on this modem.  See WT008 for more
                 information."
         ::= { adslLineConfProfileEntry 2 }

         adslAtucConfRateChanRatio OBJECT-TYPE
             SYNTAX      INTEGER(0..100)



Expires February 1999                                          [Page 66]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             UNITS        "%"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured allocation ratio of excess transmit
                 bandwidth between fast and interleaved channels.  Only
                 applies when two channel mode and RADSL are supported.
                 Distribute bandwidth on each channel in excess of the
                 corresponding ChanConfMinTxRate so that:
                 adslAtucConfRateChanRatio =

                         [Fast / (Fast + Interleaved)] * 100

                 In other words this value is the fast channel
                 percentage."
         ::= { adslLineConfProfileEntry 3 }

         adslAtucConfTargetSnrMgn OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Target Signal/Noise Margin.
                 This is the Noise Margin the modem must achieve
                 with a BER of 10-7 or better to successfully complete
                 initialization."
         ::= { adslLineConfProfileEntry 4 }

         adslAtucConfMaxSnrMgn OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Maximum acceptable Signal/Noise Margin.
                 If the Noise Margin is above this the modem should
                 attempt to reduce its power output to optimize its
                 operation."
         ::= { adslLineConfProfileEntry 5 }

         adslAtucConfMinSnrMgn  OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Minimum acceptable Signal/Noise Margin.



Expires February 1999                                          [Page 67]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 If the noise margin falls below this level, the modem
                 should attempt to increase its power output.  If that
                 is not possible the modem will attempt to
                 re-initialize or shut down."
         ::= { adslLineConfProfileEntry 6 }

         adslAtucConfDownshiftSnrMgn  OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Signal/Noise Margin for rate downshift.
                 If the noise margin falls below this level, the modem
                 should attempt to decrease its transmit rate.  In
                 the case that RADSL is not present, the value will
                 be '0'."
         ::= { adslLineConfProfileEntry 7 }

         adslAtucConfUpshiftSnrMgn  OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Signal/Noise Margin for rate upshift.
                 If the noise margin rises above this level, the modem
                 should attempt to increase its transmit rate.    In
                 the case that RADSL is not present, the value will
                 be '0'."
         ::= { adslLineConfProfileEntry 8 }

         adslAtucConfMinUpshiftTime OBJECT-TYPE
             SYNTAX      INTEGER(0..16383)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Minimum time that the current margin is above
                 UpshiftSnrMgn before an upshift occurs.
                 In the case that RADSL is not present, the value will
                 be '0'."
         ::= { adslLineConfProfileEntry 9 }

        adslAtucConfMinDownshiftTime OBJECT-TYPE
             SYNTAX      INTEGER(0..16383)
             UNITS       "seconds"
             MAX-ACCESS  read-create



Expires February 1999                                          [Page 68]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                 "Minimum time that the current margin is below
                 DownshiftSnrMgn before a downshift occurs.
                 In the case that RADSL is not present, the value will
                 be '0'."
         ::= { adslLineConfProfileEntry 10 }

         adslAtucChanConfFastMinTxRate  OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Minimum Transmit rate for 'Fast' channels,
                 in bps.  See adslAtucConfRateChanRatio for information
                 regarding RADSL mode and ATUR transmit rate for
                 ATUC receive rates."
         ::= { adslLineConfProfileEntry 11 }

         adslAtucChanConfInterleaveMinTxRate OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Minimum Transmit rate for 'Interleave'
                 channels, in bps.  See adslAtucConfRateChanRatio for
                 information regarding RADSL mode and see
                 ATUR transmit rate for receive rates."
         ::= { adslLineConfProfileEntry 12 }

         adslAtucChanConfFastMaxTxRate  OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Maximum Transmit rate for 'Fast' channels,
                 in bps.  See adslAtucConfRateChanRatio for information
                 regarding RADSL mode and see ATUR transmit rate for
                 ATUC receive rates."
         ::= { adslLineConfProfileEntry 13 }

         adslAtucChanConfInterleaveMaxTxRate OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create



Expires February 1999                                          [Page 69]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS      current
             DESCRIPTION
                 "Configured Maximum Transmit rate for 'Interleave'
                 channels, in bps.  See adslAtucConfRateChanRatio for
                 information regarding RADSL mode and ATUR transmit
                 rate for ATUC receive rates."
         ::= { adslLineConfProfileEntry 14 }

         adslAtucChanConfMaxInterleaveDelay OBJECT-TYPE
             SYNTAX      INTEGER(0..255)
             UNITS        "milli-seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured maximum Interleave Delay for this channel.

                 Interleave delay applies only to the interleave channel
                 and defines the mapping (relative spacing) between
                 subsequent input bytes at the interleaver input and
                 their placement in the bit stream at the interleaver
                 output.  Larger numbers provide greater separation
                 between consecutive input bytes in the output bit
                 stream allowing for improved impulse noise immunity
                 at the expense of payload latency."
         ::= { adslLineConfProfileEntry 15 }

         adslAturConfRateMode OBJECT-TYPE
             SYNTAX      INTEGER {
                 fixed (1),              -- no rate adaptation
                 adaptAtStartup (2),     -- perform rate adaptation
                                         -- only at initialization
                 adaptAtRuntime (3)      -- perform rate adaptation at
                                         -- any time (i.e., RADSL)
             }
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Defines what form of transmit rate adaptation is
                 configured on this modem.  See ADSL Forum TR-005
                 for more information."
         ::= { adslLineConfProfileEntry 16 }

         adslAturConfRateChanRatio OBJECT-TYPE
             SYNTAX      INTEGER(0..100)
             UNITS        "%"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION



Expires February 1999                                          [Page 70]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 "Configured allocation ratio of excess transmit
                 bandwidth between fast and interleaved channels.  Only
                 applies when two channel mode and RADSL are supported.
                 Distribute bandwidth on each channel in excess of the
                 corresponding ChanConfMinTxRate so that:
                 adslAturConfRateChanRatio =

                         [Fast / (Fast + Interleaved)] * 100

                 In other words this value is the fast channel
                 percentage."
         ::= { adslLineConfProfileEntry 17 }

         adslAturConfTargetSnrMgn OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Target Signal/Noise Margin.
                 This is the Noise Margin the modem must achieve
                 with a BER of 10-7 or better to successfully complete
                 initialization."
         ::= { adslLineConfProfileEntry 18 }

         adslAturConfMaxSnrMgn OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Maximum acceptable Signal/Noise Margin.
                 If the Noise Margin is above this the modem should
                 attempt to reduce its power output to optimize its
                 operation."
         ::= { adslLineConfProfileEntry 19 }

        adslAturConfMinSnrMgn  OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Minimum acceptable Signal/Noise Margin.
                 If the noise margin falls below this level, the modem
                 should attempt to increase its power output.  If that
                 is not possible the modem will attempt to
                 re-initialize or shut down."



Expires February 1999                                          [Page 71]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslLineConfProfileEntry 20 }

         adslAturConfDownshiftSnrMgn  OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Signal/Noise Margin for rate downshift.
                 If the noise margin falls below this level, the modem
                 should attempt to decrease its transmit rate.  In
                 the case that RADSL is not present,
                 the value will be '0'."
         ::= { adslLineConfProfileEntry 21 }

         adslAturConfUpshiftSnrMgn  OBJECT-TYPE
             SYNTAX      INTEGER(0..310)
             UNITS       "tenth dB"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Signal/Noise Margin for rate upshift.
                 If the noise margin rises above this level, the modem
                 should attempt to increase its transmit rate.
                 In the case that RADSL is not present,
                 the value will be '0'."
         ::= { adslLineConfProfileEntry 22 }

         adslAturConfMinUpshiftTime OBJECT-TYPE
             SYNTAX      INTEGER(0..16383)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Minimum time that the current margin is above
                 UpshiftSnrMgn before an upshift occurs.
                 In the case that RADSL is not present, the value will
                 be '0'."
         ::= { adslLineConfProfileEntry 23 }

        adslAturConfMinDownshiftTime OBJECT-TYPE
             SYNTAX      INTEGER(0..16383)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Minimum time that the current margin is below
                 DownshiftSnrMgn before a downshift occurs.



Expires February 1999                                          [Page 72]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 In the case that RADSL is not present, the value will
                 be '0'."
         ::= { adslLineConfProfileEntry 24 }

         adslAturChanConfFastMinTxRate  OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Minimum Transmit rate for 'Fast' channels,
                 in bps.  See adslAturConfRateChanRatio for information
                 regarding RADSL mode and ATUC transmit rate
                 for ATUR receive rates."
         ::= { adslLineConfProfileEntry 25 }

         adslAturChanConfInterleaveMinTxRate OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Minimum Transmit rate for 'Interleave'
                 channels, in bps.  See adslAturConfRateChanRatio for
                 information regarding RADSL mode and ATUC transmit rate
                 for ATUR receive rates."
         ::= { adslLineConfProfileEntry 26 }

         adslAturChanConfFastMaxTxRate  OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Maximum Transmit rate for 'Fast' channels,
                 in bps.  See adslAturConfRateChanRatio for information
                 regarding RADSL mode and ATUC transmit rate
                 for ATUR receive rates."
         ::= { adslLineConfProfileEntry 27 }

         adslAturChanConfInterleaveMaxTxRate OBJECT-TYPE
             SYNTAX      INTEGER
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured Maximum Transmit rate for 'Interleave'
                 channels, in bps.  See adslAturConfRateChanRatio for



Expires February 1999                                          [Page 73]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 information regarding RADSL mode and see
                 ATUC transmit rate for ATUR receive rates."
         ::= { adslLineConfProfileEntry 28 }

         adslAturChanConfMaxInterleaveDelay OBJECT-TYPE
             SYNTAX      INTEGER(0..255)
             UNITS        "milli-seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Configured maximum Interleave Delay for this channel.

                 Interleave delay applies only to the interleave channel
                 and defines the mapping (relative spacing) between
                 subsequent input bytes at the interleaver input and
                 their placement in the bit stream at the interleaver
                 output.  Larger numbers provide greater separation
                 between consecutive input bytes in the output bit
                 stream allowing for improved impulse noise immunity
                 at the expense of payload latency."
         ::= { adslLineConfProfileEntry 29 }

         adslLineConfProfileRowStatus OBJECT-TYPE
         SYNTAX          RowStatus
         MAX-ACCESS      read-create
         STATUS          current
         DESCRIPTION
                 "This object is used to create a new row or modify or
                 delete an existing row in this table.

                 If the implementator of this MIB has chosen not
                 to implement 'dynamic assignment' of profiles, this
                 object is not useful and should return noSuchObject
                 upon SNMP request."
         ::= { adslLineConfProfileEntry 30 }


         adslLineAlarmConfProfileIndexNext OBJECT-TYPE
             SYNTAX          INTEGER
             MAX-ACCESS      read-only
             STATUS          current
             DESCRIPTION
                 "This object contains an appropriate value to
                 be used for adslLineAlarmConfProfileIndex when creating
                 entries in the adslLineAlarmConfTable. The value
                 '0' indicates that no unassigned entries are available.
                 To obtain the adslLineAlarmConfProfileIndexNext
                 value for a new entry, the manager issues a



Expires February 1999                                          [Page 74]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 management protocol retrieval operation to obtain
                 the current value of this object.  After each
                 retrieval, the agent should modify the value to
                 the next unassigned index.

                 If the implementator of this MIB has chosen not
                 to implement 'dynamic assignment' of profiles, this
                 object is not useful and should return noSuchObject
                 upon SNMP request."
         ::= { adslMibObjects 16}

         adslLineAlarmConfProfileTable    OBJECT-TYPE
             SYNTAX          SEQUENCE OF AdslLineAlarmConfProfileEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "This table contains information on the ADSL line
                 configuration.  One entry in this table reflects a
                 profile defined by a manager which can be used to
                 configure the modem for a physical line"
         ::= { adslMibObjects 17}

         adslLineAlarmConfProfileEntry    OBJECT-TYPE
             SYNTAX          AdslLineAlarmConfProfileEntry
             MAX-ACCESS      not-accessible
             STATUS          current
             DESCRIPTION
                 "Each entry consists of a list of parameters that
                 represents the configuration of an ADSL modem.  A
                 profile is created in one step with all necessary
                 parameter values and adslLineAlarmConfProfileRowStatus
                 set to createAndGo.  This RowStatus object is also
                 used to delete destroy profiles."
             INDEX { adslLineAlarmConfProfileIndex}
         ::= { adslLineAlarmConfProfileTable 1}

         AdslLineAlarmConfProfileEntry ::=
             SEQUENCE {
                 adslLineAlarmConfProfileIndex
   AdslLineProfileType,
                 adslAtucThresh15MinLofs                 INTEGER,
                 adslAtucThresh15MinLoss                 INTEGER,
                 adslAtucThresh15MinLols                 INTEGER,
                 adslAtucThresh15MinLprs                 INTEGER,
                 adslAtucThresh15MinESs                  INTEGER,
                 adslAtucThreshFastRateUp                Integer32,
                 adslAtucThreshInterleaveRateUp          Integer32,
                 adslAtucThreshFastRateDown              Integer32,



Expires February 1999                                          [Page 75]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 adslAtucThreshInterleaveRateDown        Integer32,
                 adslAtucInitFailureTrapEnable           INTEGER,
                 adslAturThresh15MinLofs                 INTEGER,
                 adslAturThresh15MinLoss                 INTEGER,
                 adslAturThresh15MinLprs                 INTEGER,
                 adslAturThresh15MinESs                  INTEGER,
                 adslAturThreshFastRateUp                Integer32,
                 adslAturThreshInterleaveRateUp          Integer32,
                 adslAturThreshFastRateDown              Integer32,
                 adslAturThreshInterleaveRateDown        Integer32,
                 adslLineAlarmConfProfileRowStatus       RowStatus
             }

         adslLineAlarmConfProfileIndex    OBJECT-TYPE
                 SYNTAX          AdslLineProfileType
                 MAX-ACCESS      not-accessible
                 STATUS          current
                 DESCRIPTION
                 "This object is used by the line alarm configuration
                 table in order to identify a row of this table"
         ::= { adslLineAlarmConfProfileEntry 1}

         adslAtucThresh15MinLofs OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Frame Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfLofsThreshTrap.

                 Limit of one trap will be sent for any one interval.  A
                 value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 2}

         adslAtucThresh15MinLoss  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Signal Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an



Expires February 1999                                          [Page 76]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 adslAtucPerfLossThreshTrap.

                 Limit of one trap will be sent for any one interval.
                 A value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 3}

         adslAtucThresh15MinLols  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Link Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfLolsThreshTrap.  Limit of one trap will
                 be sent for any one interval.  A value of '0' will
                 disable the trap."
         ::= { adslLineAlarmConfProfileEntry 4}

         adslAtucThresh15MinLprs  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Power Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfLprsThreshTrap.
                 Limit of one trap will be sent for any one interval.
                 A value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 5}

         adslAtucThresh15MinESs  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Errored Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfESsThreshTrap.
                 Limit of one trap will be sent for any one interval.



Expires February 1999                                          [Page 77]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 A value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 6}

         adslAtucThreshFastRateUp OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Fast' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate > ChanPrevTxRate plus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 7}

         adslAtucThreshInterleaveRateUp OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Interleave' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate > ChanPrevTxRate plus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 8}

         adslAtucThreshFastRateDown OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Fast' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate < ChanPrevTxRate minus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 9 }

         adslAtucThreshInterleaveRateDown OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION



Expires February 1999                                          [Page 78]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 "Applies to 'Interleave' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate < ChanPrevTxRate minus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 10 }

         adslAtucInitFailureTrapEnable OBJECT-TYPE
             SYNTAX      INTEGER {
                 enable (1),
                 disable (2)
             }
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Enables and disables the InitFailureTrap.  This
                 object is defaulted disable(2)."
         DEFVAL { disable }
         ::= { adslLineAlarmConfProfileEntry 11 }

         adslAturThresh15MinLofs OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Frame Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfLofsThreshTrap.
                 Limit of one trap will be sent for any one interval.
                 A value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 12 }

         adslAturThresh15MinLoss  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Signal Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfLossThreshTrap.
                 Limit of one trap will be sent for any one interval.
                 A value of '0' will disable the trap."



Expires February 1999                                          [Page 79]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslLineAlarmConfProfileEntry 13 }

         adslAturThresh15MinLprs  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Loss of Power Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfLprsThreshTrap.
                 Limit of one trap will be sent for any one interval.
                 A value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 14 }

         adslAturThresh15MinESs  OBJECT-TYPE
             SYNTAX      INTEGER(0..900)
             UNITS       "seconds"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "The number of Errored Seconds,
                 encountered by an ADSL interface within any given 15
                 minutes performance data collection period, which
                 causes the SNMP agent to send an
                 adslAtucPerfESsThreshTrap.

                 Limit of one trap will be sent for any one interval.
                 A value of '0' will disable the trap."
         ::= { adslLineAlarmConfProfileEntry 15 }

         adslAturThreshFastRateUp OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Fast' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate > ChanPrevTxRate plus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 16 }

         adslAturThreshInterleaveRateUp OBJECT-TYPE
             SYNTAX      Integer32



Expires February 1999                                          [Page 80]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Interleave' channels only.
                 configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate > ChanPrevTxRate plus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 17 }

         adslAturThreshFastRateDown OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Fast' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate < ChanPrevTxRate minus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 18 }

         adslAturThreshInterleaveRateDown OBJECT-TYPE
             SYNTAX      Integer32
             UNITS       "bps"
             MAX-ACCESS  read-create
             STATUS      current
             DESCRIPTION
                 "Applies to 'Interleave' channels only.
                 Configured change in rate causing an
                 adslAtucRateChangeTrap.  A trap is produced when:
                 ChanCurrTxRate < ChanPrevTxRate minus the value of
                 this object. Set to '0' to disable."
         ::= { adslLineAlarmConfProfileEntry 19 }

         adslLineAlarmConfProfileRowStatus OBJECT-TYPE
             SYNTAX          RowStatus
             MAX-ACCESS      read-create
             STATUS          current
             DESCRIPTION
                 "This object is used to create a new row or modify or
                 delete an existing row in this table.

                 If the implementator of this MIB has chosen not
                 to implement 'dynamic assignment' of profiles, this
                 object is not useful and should return noSuchObject



Expires February 1999                                          [Page 81]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                 upon SNMP request."
         ::= { adslLineAlarmConfProfileEntry 20 }

   -- conformance information

   adslConformance OBJECT IDENTIFIER ::= { adslLineMib 2 }

   adslGroups OBJECT IDENTIFIER ::= { adslConformance 1 }
   adslCompliances OBJECT IDENTIFIER ::= { adslConformance 2 }


         -- compliance statements

         adslLineMibCompliance MODULE-COMPLIANCE
             STATUS  current
             DESCRIPTION
                 "The compliance statement for SNMP entities
                 which have ADSL interfaces."

             MODULE  -- this module
             MANDATORY-GROUPS
                {
                adslLineGroup, adslPhysicalGroup, adslChannelGroup,
                adslAtucPhysPerfIntervalGroup,
                adslAturPhysPerfIntervalGroup, adslLineProfileGroup,
                adslLineAlarmProfileGroup
                }

             GROUP       adslLineProfileControlGroup
             DESCRIPTION
                 "This group is mandatory only when the dynamic profile
                 mode is implemented."

             GROUP       adslAtucPhysPerfRawCounterGroup
             DESCRIPTION
                 "This group is optional."

             GROUP       adslAturPhysPerfRawCounterGroup
             DESCRIPTION
                 "This group is optional."

             GROUP       adslAtucChanPerformanceGroup
             DESCRIPTION
                 "This group is optional."

             GROUP       adslAturChanPerformanceGroup
             DESCRIPTION
                 "This group is optional."



Expires February 1999                                          [Page 82]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             OBJECT     adslAtucIntervalNumber
             SYNTAX   INTEGER (1)
             DESCRIPTION
                 "It is allowable to implement only one ATU-C 15min
                 performance interval."

             OBJECT     adslAturIntervalNumber
             SYNTAX   INTEGER (1)
             DESCRIPTION
                 "It is allowable to implement only one ATU-R 15min
                 performance interval."

             OBJECT     adslAtucIntervalNumber
             SYNTAX   INTEGER (1)
             DESCRIPTION
                 "It is allowable to implement only one ATU-C
                 channel 15min performance interval."

             OBJECT     adslAtucIntervalNumber
             SYNTAX   INTEGER (1)
             DESCRIPTION
                 "It is allowable to implement only one ATU-R
                 channel 15min performance interval."

         ::= { adslCompliances 1 }

         -- units of conformance
         adslLineGroup    OBJECT-GROUP
             OBJECTS {
                adslLineCoding, adslLineType, adslLineSpecific
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing configuration
                 information about an ADSL Line."
         ::= { adslGroups 1 }

         adslPhysicalGroup    OBJECT-GROUP
             OBJECTS {
                adslAtucInvSerialNumber, adslAtucInvVendorID,
                adslAtucInvVersionNumber, adslAtucCurrSnrMgn,
                adslAtucCurrAtn, adslAtucCurrStatus,
                adslAtucCurrOutputPwr, adslAtucCurrAttainableRate,
                adslAturInvSerialNumber, adslAturInvVendorID,
                adslAturInvVersionNumber, adslAturCurrSnrMgn,
                adslAturCurrAtn, adslAturCurrStatus,
                adslAturCurrOutputPwr, adslAturCurrAttainableRate
                }



Expires February 1999                                          [Page 83]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             STATUS     current
             DESCRIPTION
                 "A collection of objects providing physical
                 configuration information of the ADSL Line."
         ::= { adslGroups 2 }

         adslChannelGroup    OBJECT-GROUP
             OBJECTS {
                adslAtucChanInterleaveDelay, adslAtucChanCurrTxRate,
                adslAtucChanPrevTxRate, adslAtucChanCrcBlockLength,
                adslAturChanInterleaveDelay, adslAturChanCurrTxRate,
                adslAturChanPrevTxRate, adslAturChanCrcBlockLength
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing configuration
                 information about an ADSL channel."
         ::= { adslGroups 3 }

         adslAtucPhysPerfRawCounterGroup OBJECT-GROUP
             OBJECTS {
                adslAtucPerfLofs, adslAtucPerfLoss,
                adslAtucPerfLols, adslAtucPerfLprs,
                adslAtucPerfESs, adslAtucPerfInits
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing raw performance
                 counts on an ADSL Line (ATU-C end)."
         ::= { adslGroups 4 }

         adslAtucPhysPerfIntervalGroup OBJECT-GROUP
             OBJECTS {
                adslAtucPerfValidIntervals,
                adslAtucPerfInvalidIntervals,
                adslAtucPerfCurr15MinTimeElapsed,
                adslAtucPerfCurr15MinLofs, adslAtucPerfCurr15MinLoss,
                adslAtucPerfCurr15MinLols, adslAtucPerfCurr15MinLprs,
                adslAtucPerfCurr15MinESs, adslAtucPerfCurr15MinInits,
                adslAtucPerfCurr1DayLofs, adslAtucPerfCurr1DayLoss,
                adslAtucPerfCurr1DayLols, adslAtucPerfCurr1DayLprs,
                adslAtucPerfCurr1DayESs, adslAtucPerfCurr1DayInits,
                adslAtucPerfPrev1DayMoniSecs,
                adslAtucPerfPrev1DayLofs, adslAtucPerfPrev1DayLoss,
                adslAtucPerfPrev1DayLols, adslAtucPerfPrev1DayLprs,
                adslAtucPerfPrev1DayESs, adslAtucPerfPrev1DayInits,
                adslAtucIntervalLofs, adslAtucIntervalLoss,
                adslAtucIntervalLols, adslAtucIntervalLprs,



Expires February 1999                                          [Page 84]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                adslAtucIntervalESs, adslAtucIntervalInits,
                adslAtucIntervalValidData
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing current 15min,
                 1 day; and previous 1 day performance counts on
                 ADSL Line (ATU-C end) ."
         ::= { adslGroups 5 }

         adslAturPhysPerfRawCounterGroup OBJECT-GROUP
             OBJECTS {
                adslAturPerfLofs, adslAturPerfLoss,
                adslAturPerfLprs, adslAturPerfESs
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing raw performance
                 counts on an ADSL Line (ATU-R end)."
         ::= { adslGroups 6 }

         adslAturPhysPerfIntervalGroup OBJECT-GROUP
             OBJECTS {
                adslAturPerfValidIntervals,
                adslAturPerfInvalidIntervals,
                adslAturPerfCurr15MinTimeElapsed,
                adslAturPerfCurr15MinLofs, adslAturPerfCurr15MinLoss,
                adslAturPerfCurr15MinLprs, adslAturPerfCurr15MinESs,
                adslAturPerfCurr1DayTimeElapsed,
                adslAturPerfCurr1DayLofs, adslAturPerfCurr1DayLoss,
                adslAturPerfCurr1DayLprs, adslAturPerfCurr1DayESs,
                adslAturPerfPrev1DayMoniSecs,
                adslAturPerfPrev1DayLofs, adslAturPerfPrev1DayLoss,
                adslAturPerfPrev1DayLprs, adslAturPerfPrev1DayESs,
                adslAturIntervalLofs,
                adslAturIntervalLoss, adslAturIntervalLprs,
                adslAturIntervalESs, adslAturIntervalValidData
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing current 15min,
                 1 day; and previous 1 day performance counts on
                 ADSL Line (ATU-R end)."
         ::= { adslGroups 7 }

         adslAtucChanPerformanceGroup OBJECT-GROUP
             OBJECTS {
                adslAtucChanReceivedBlks,



Expires February 1999                                          [Page 85]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                adslAtucChanTransmittedBlks,
                adslAtucChanCorrectedBlks,
                adslAtucChanUncorrectBlks,
                adslAtucChanPerfValidIntervals,
                adslAtucChanPerfInvalidIntervals,
                adslAtucChanPerfCurr15MinTimeElapsed,
                adslAtucChanPerfCurr15MinReceivedBlks,
                adslAtucChanPerfCurr15MinTransmittedBlks,
                adslAtucChanPerfCurr15MinCorrectedBlks,
                adslAtucChanPerfCurr15MinUncorrectBlks,
                adslAtucChanPerfCurr1DayTimeElapsed,
                adslAtucChanPerfCurr1DayReceivedBlks,
                adslAtucChanPerfCurr1DayTransmittedBlks,
                adslAtucChanPerfCurr1DayCorrectedBlks,
                adslAtucChanPerfCurr1DayUncorrectBlks,
                adslAtucChanPerfPrev1DayMoniSecs,
                adslAtucChanPerfPrev1DayReceivedBlks,
                adslAtucChanPerfPrev1DayTransmittedBlks,
                adslAtucChanPerfPrev1DayCorrectedBlks,
                adslAtucChanPerfPrev1DayUncorrectBlks,
                adslAtucChanIntervalReceivedBlks,
                adslAtucChanIntervalTransmittedBlks,
                adslAtucChanIntervalCorrectedBlks,
                adslAtucChanIntervalUncorrectBlks,
                adslAtucChanIntervalValidData
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing channel block
                 performance information on an ADSL channel
                 (ATU-C end)."
         ::= { adslGroups 8 }

         adslAturChanPerformanceGroup OBJECT-GROUP
             OBJECTS {
                adslAturChanReceivedBlks,
                adslAturChanTransmittedBlks,
                adslAturChanCorrectedBlks,
                adslAturChanUncorrectBlks,
                adslAturChanPerfValidIntervals,
                adslAturChanPerfInvalidIntervals,
                adslAturChanPerfCurr15MinTimeElapsed,
                adslAturChanPerfCurr15MinReceivedBlks,
                adslAturChanPerfCurr15MinTransmittedBlks,
                adslAturChanPerfCurr15MinCorrectedBlks,
                adslAturChanPerfCurr15MinUncorrectBlks,
                adslAturChanPerfCurr1DayTimeElapsed,
                adslAturChanPerfCurr1DayReceivedBlks,



Expires February 1999                                          [Page 86]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


                adslAturChanPerfCurr1DayTransmittedBlks,
                adslAturChanPerfCurr1DayCorrectedBlks,
                adslAturChanPerfCurr1DayUncorrectBlks,
                adslAturChanPerfPrev1DayMoniSecs,
                adslAturChanPerfPrev1DayReceivedBlks,
                adslAturChanPerfPrev1DayTransmittedBlks,
                adslAturChanPerfPrev1DayCorrectedBlks,
                adslAturChanPerfPrev1DayUncorrectBlks,
                adslAturChanIntervalReceivedBlks,
                adslAturChanIntervalTransmittedBlks,
                adslAturChanIntervalCorrectedBlks,
                adslAturChanIntervalUncorrectBlks,
                adslAturChanIntervalValidData
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing channel block
                 performance information on an ADSL channel
                 (ATU-C end)."
         ::= { adslGroups 9 }

         adslLineProfileGroup OBJECT-GROUP
             OBJECTS {
                adslAtucConfRateMode, adslAtucConfRateChanRatio,
                adslAtucConfTargetSnrMgn, adslAtucConfMaxSnrMgn,
                adslAtucConfMinSnrMgn,
                adslAtucConfDownshiftSnrMgn,
                adslAtucConfUpshiftSnrMgn,
                adslAtucConfMinUpshiftTime,
                adslAtucConfMinDownshiftTime,
                adslAtucChanConfFastMinTxRate,
                adslAtucChanConfInterleaveMinTxRate,
                adslAtucChanConfFastMaxTxRate,
                adslAtucChanConfInterleaveMaxTxRate,
                adslAtucChanConfMaxInterleaveDelay,
                adslAturConfRateMode, adslAturConfRateChanRatio,
                adslAturConfTargetSnrMgn, adslAturConfMaxSnrMgn,
                adslAturConfMinSnrMgn, adslAturConfDownshiftSnrMgn,
                adslAturConfUpshiftSnrMgn,
                adslAturConfMinUpshiftTime,
                adslAturConfMinDownshiftTime,
                adslAturChanConfFastMinTxRate,
                adslAturChanConfInterleaveMinTxRate,
                adslAturChanConfFastMaxTxRate,
                adslAturChanConfInterleaveMaxTxRate,
                adslAturChanConfMaxInterleaveDelay
                }
             STATUS     current



Expires February 1999                                          [Page 87]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             DESCRIPTION
                 "A collection of objects providing provisioning
                 information about an ADSL Line."
         ::= { adslGroups 10 }

         adslLineAlarmProfileGroup OBJECT-GROUP
             OBJECTS {
                adslAtucThresh15MinLofs, adslAtucThresh15MinLoss,
                adslAtucThresh15MinLols, adslAtucThresh15MinLprs,
                adslAtucThresh15MinESs, adslAtucThreshFastRateUp,
                adslAtucThreshInterleaveRateUp,
                adslAtucThreshFastRateDown,
                adslAtucThreshInterleaveRateDown,
                adslAtucInitFailureTrapEnable,
                adslAturThresh15MinLofs, adslAturThresh15MinLoss,
                adslAturThresh15MinLprs, adslAturThresh15MinESs,
                adslAturThreshFastRateUp,
                adslAturThreshInterleaveRateUp,
                adslAturThreshFastRateDown,
                adslAturThreshInterleaveRateDown
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing alarm provisioning
                 information about an ADSL Line."
         ::= { adslGroups 11 }

         adslLineProfileControlGroup OBJECT-GROUP
             OBJECTS {
                adslLineConfProfile, adslLineAlarmConfProfile,
                adslLineConfProfileIndexNext,
                adslLineConfProfileRowStatus,
                adslLineAlarmConfProfileIndexNext,
                adslLineAlarmConfProfileRowStatus
                }
             STATUS     current
             DESCRIPTION
                 "A collection of objects providing 'dynamic' profile
                 control for the ADSL system."
         ::= { adslGroups 12 }

   -- trap definitions

   adslTraps OBJECT IDENTIFIER ::= { adslLineMib 3 }

   adslAtucTraps OBJECT IDENTIFIER ::= { adslTraps 1 }

         adslAtucPerfLofsThreshTrap      NOTIFICATION-TYPE



Expires February 1999                                          [Page 88]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


             OBJECTS { ifIndex, adslAtucThresh15MinLofs }
             STATUS  current
             DESCRIPTION
                 "Loss of Framing 15-minute interval threshold exceeded"
         ::= { adslAtucTraps 0 1 }

         adslAtucPerfLossThreshTrap      NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAtucThresh15MinLoss }
             STATUS  current
             DESCRIPTION
                 "Loss of Signal 15-minute interval threshold exceeded"
         ::= { adslAtucTraps 0 2 }

         adslAtucPerfLprsThreshTrap      NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAtucThresh15MinLprs }
             STATUS  current
             DESCRIPTION
                 "Loss of Power 15-minute interval threshold exceeded"
         ::= { adslAtucTraps 0 3 }

         adslAtucPerfESsThreshTrap       NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAtucThresh15MinESs }
             STATUS  current
             DESCRIPTION
                 "Errored Second 15-minute interval threshold exceeded"
         ::= { adslAtucTraps 0 4 }

         adslAtucRateChangeTrap  NOTIFICATION-TYPE
             OBJECTS {ifIndex, adslAtucChanCurrTxRate,
                                 adslAtucChanPrevTxRate }
             STATUS  current
             DESCRIPTION
                 "The ATUCs transmit rate has changed (RADSL mode only)"
         ::= { adslAtucTraps 0 5 }

         adslAtucPerfLolsThreshTrap      NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAtucThresh15MinLols }
             STATUS  current
             DESCRIPTION
                 "Loss of Link 15-minute interval threshold exceeded"
         ::= { adslAtucTraps 0 6 }

         adslAtucInitFailureTrap NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAtucCurrStatus }
             STATUS  current
             DESCRIPTION
                 "ATUC initialization failed. See adslAtucCurrStatus
                 for potential reasons."



Expires February 1999                                          [Page 89]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         ::= { adslAtucTraps 0 7 }


   adslAturTraps OBJECT IDENTIFIER ::= { adslTraps 2 }

         adslAturPerfLofsThreshTrap      NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAturThresh15MinLofs }
             STATUS  current
             DESCRIPTION
                 "Loss of Framing 15-minute interval threshold exceeded"
         ::= { adslAturTraps 0 1 }

         adslAturPerfLossThreshTrap      NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAturThresh15MinLoss }
             STATUS  current
             DESCRIPTION
                 "Loss of Signal 15-minute interval threshold exceeded"
         ::= { adslAturTraps 0 2 }

         adslAturPerfLprsThreshTrap      NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAturThresh15MinLprs }
             STATUS  current
             DESCRIPTION
                 "Loss of Power 15-minute interval threshold exceeded"
         ::= { adslAturTraps 0 3 }

         adslAturPerfESsThreshTrap       NOTIFICATION-TYPE
             OBJECTS { ifIndex, adslAturThresh15MinESs }
             STATUS  current
             DESCRIPTION
                 "Errored Second 15-minute interval threshold exceeded"
         ::= { adslAturTraps 0 4 }

         adslAturRateChangeTrap  NOTIFICATION-TYPE
             OBJECTS {ifIndex, adslAturChanCurrTxRate,
                                 adslAturChanPrevTxRate }
             STATUS  current
             DESCRIPTION
                 "The ATURs transmit rate has changed (RADSL mode only)"
         ::= { adslAturTraps 0 5 }

         -- no adslAturPerfLolsThreshTrap possible { 6 }

         -- no adslAturInitFailureTrap possible { 7 }

         -- these are defined for use as ifTestTypes (see RFC2233[5])
         -- additional vendor-specific tests are easily supported
         -- (just define in vendor MIB)



Expires February 1999                                          [Page 90]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


         --
         adslTestTypes OBJECT-IDENTITY
             STATUS      current
             DESCRIPTION
                 "Integer values as follows:
                     atucSelfTest (1),
                     aturSelfTest (2)
                 "
         ::= { adslLineMib 4 }

   adslTestCodes OBJECT IDENTIFIER ::= { adslLineMib 5 }

   END

   10.  Acknowledgments

   Much technical information for this document was derived from ADSL
   Forum's TR006[9].  The original editors of this reference document
   were:

      Gregory Bathrick (AG Communication Systems)

      John Burgess (Predictive Systems)


   The technical leader of the ADSL Forum network management working
   group was:

      Chi-Lin Tom (AFC)


   Contributions were received from the following contributors.

      Rajesh Abbi (Alcatel)

      Kevin Godfrey (Motorola)

      Ron Knipper (Diamond Lane)

      Tsu Kai Lu (DSC)

      Gigi Karmous-Edwards (Pulsecom)

      Anna Salguero (SBC)

      Lars Johansson (Ericsson)

      Gail Cone (Amati)



Expires February 1999                                          [Page 91]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


      Donald Simon (Motorola)

      Frank Van der Putten (Alcatel)

      Bob Jenness (Siemens)

      John Stehman (Diamond Lane)

      Chuck Storry (Newbridge)

      Bill Hong (Diamond Lane)

      John Burgess (Predictive Systems)

      Gregory Bathrick (AG Communication Systems)

      Chi-Lin Tom (AFC)

      Marc Van Vlimmeren (Alcatel)

      Peter Duffy (Atlantech)

      Padmore Peterson (BT)



   11.  References

   [1]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
        S. Waldbusser, "Structure of Management Information for Version
        2 of the Simple Network Management Protocol (SNMPv2)",
        RFC 1902, January 1996.

   [2]  Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
        "Textual Conventions for SNMPv2", RFC 1903, SNMP Research,
        Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc.,
        International Network Services, January 1996.

   [3]  ADSL Forum TR-005, "Network Management Element Management",
        March 1998.

   [4]  McCloghrie, K., and M. Rose, Editors, "Management
        Information Base for Network Management of TCP/IP-based
        internets: MIB-II", STD 17, RFC 1213, Hughes LAN Systems,
        Performance Systems International, March 1991.

   [5]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
        MIB using SMIv2", RFC 2233, Cisco Systems, FTP Software,



Expires February 1999                                          [Page 92]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


        November 1997.

   [6]  RFC 1907, "Management Information Base for Version 2 of the
        Simple Network Management Protocol (SNMPv2)", January 1996.

   [7]  Case, J., Fedor, M., Schoffstall, M., and J. Davin. " A Simple
        Network Management Protocol (SNMP)", STD 15, RFC 1157, SNMP
        Research, Performance Systems International, MIT Lab for
        Computer Science, May 1990.

   [8]  SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and
        S. Waldbusser, "Protocol Operations for Version 2 of the Simple
        Network Management Protocol (SNMPv2)", RFC 1905, January 1996.

   [9]  ADSL Forum TR-006, "SNMP-based ADSL Line MIB", March 1998.

   [10] American National Standards Institute, ANSI T1.413-1995,
        August 1995.

   [11] ADSL Forum WT-022, "DMT Line Code Specific MIB", June 1998.

   [12] ADSL Forum WT-023, "CAP Line Code Specific MIB", June 1998.

   [13] Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture for
        Describing SNMP Management Frameworks", RFC 2271, Cabletron
        Systems, Inc., BMC Software, Inc., IBM T. J. Watson Research,
        January 1998

   [14] Rose, M., and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based Internets", RFC 1155,
        Performance Systems International, Hughes LAN Systems, May 1990

   [15] Rose, M., and K. McCloghrie, "Concise MIB Definitions",
        RFC 1212, Performance Systems International, Hughes LAN Systems,
        March 1991

   [16] M. Rose, "A Convention for Defining Traps for use with the
        SNMP", RFC 1215, Performance Systems International, March
        1991

   [17] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and S.
        Waldbusser, "Conformance Statements for Version 2 of the Simple
        Network Management Protocol (SNMPv2)", RFC 1904, SNMP Research,
        Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc.,
        International Network Services, January 1996.

   [18] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and S.
        Waldbusser, "Introduction to Community-based SNMPv2", RFC 1901,



Expires February 1999                                          [Page 93]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


        SNMP Research, Inc., Cisco Systems, Inc., Dover Beach
        Consulting, Inc., International Network Services, January 1996.

   [19] SNMPv2 Working Group, Case, J., McCloghrie, K., Rose, M., and S.
        Waldbusser, "Transport Mappings for Version 2 of the Simple
        Network Management Protocol (SNMPv2)", RFC 1906, SNMP Research,
        Inc., Cisco Systems, Inc., Dover Beach Consulting, Inc.,
        International Network Services, January 1996.

   [20] Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message
        Processing and Dispatching for the Simple Network Management
        Protocol (SNMP)", RFC 2272, SNMP Research, Inc., Cabletron
        Systems, Inc., BMC Software, Inc., IBM T. J. Watson Research,
        January 1998.

   [21] Blumenthal, U., and B. Wijnen, "User-based Security Model (USM)
        for version 3 of the Simple Network Management Protocol
        (SNMPv3)", RFC 2274, IBM T. J. Watson Research, January 1998.

   [22] Levi, D., Meyer, P., and B. Stewart, MPv3 Applications",
        RFC 2273, SNMP Research, Inc., Secure Computing Corporation,
        Cisco Systems, January 1998.

   [23] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based Access
        Control Model (VACM) for the Simple Network Management Protocol
        (SNMP)", RFC 2275, IBM T. J. Watson Research, BMC Software,
        Inc., Cisco Systems, Inc., January 1998.

   [24] Ahmed, M., and K. Tesink, Editors, "Definitions of Managed
        Objects for ATM Management Version 8.0 using SMIv2", RFC 1695,
   Bell
        Communications Research, August 1994.

   [25] McCloghrie, K. and A. Bierman, "Entity MIB", RFC 2037, October
        1996.

   [26] Yergeau, F., "UTF-8, a transformation format of Unicode and ISO
        10646", RFC 2044, October 1996.



   12.  Security Considerations

   1) Blocking unauthorized access to the ADSL MIB via the element
   management system is outside the scope of this document. It should be
   noted that access to the MIB permits the unauthorized entity to
   modify the profiles (sect  7.4) such that both subscriber service and
   network operations can be interfered with. Subscriber service can be



Expires February 1999                                          [Page 94]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


   altered by modifying any of a number of service characteristics such
   as rate partitioning and maximum transmission rates. Network
   operations can be impacted by modification of trap thresholds such as
   SNR margins.

   2) Security issues of unauthorized access, unauthorized disclosure,
   and tampering posed by direct network level connectivity to the ADSL
   Access Node can be addressed by the use of SNMPv3.

   3) ADSL layer connectivity from the ATU-R will permit the subscriber
   to manipulate both the ADSL link directly and the AOC/EOC channels
   for their own loop.  For example,  unchecked or unfiltered
   fluctuations initiated by the subscriber could generate sufficient
   traps to potentially overwhelm either the management interface to the
   network or the element manager.  Other attacks affecting the ATU-R
   portions of the MIB may also be possible.


   13.  Authors' Addresses

             Gregory Bathrick
             AG Communication Systems
             2500 W Utopia Rd.
             Phoenix, AZ 85027 USA
             Tel: +1 602-582-7679
             Fax: +1 602-582-7697
             E-MAIL: bathricg@agcs.com


   Table of Contents

      1.  Status of this Memo  ...................................    1

      2.  Abstract  ..............................................    1

      3.  The SNMP Network Management Framework  .................    2

      4.  Object Definitions .....................................    3

      5.  Introduction ...........................................    3

      6.  Relationship of the ADSL LINE MIB with standard MIBs ...    3

      7.  Conventions used in the MIB ............................    9

      8.  Conformance and Compliance .............................   16

      9.  Definitions ............................................   16



Expires February 1999                                          [Page 95]


INTERNET-DRAFT               ADSL Line MIB                August 7, 1998


      10. Acknowledgments ........................................   90

      11. References .............................................   92

      12. Security Considerations ................................   94

      13. Authors' Addresses .....................................   95












































Expires February 1999                                          [Page 96]