A. Valentine
Internet Draft Hughes Network
Systems Ltd
Document: draft-ietf-ipcdn-dvbnetint-mib-03.txt February 2001
Category: Standards Track
DVB Cable Network Interface Unit MIB
for EuroModem compliant Cable Modems
Status of this Memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026.
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-
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documents at any time. It is inappropriate to use Internet- Drafts
as reference material or to cite them other than as "work in
progress."
The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt
The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html.
Abstract
This memo defines a portion of the Management Information Base (MIB)
for use with network management protocols in the Internet community.
In particular, it defines a basic set of managed objects for SNMP-
based management of EuroModem v1.0 compliant Cable Network Interface
Units.
This memo specifies a MIB module in a manner that is compliant to
the SNMP SMIv2[RFC2578][RFC2579][RFC2580]. The set of objects is
consistent with the SNMP framework and existing SNMP standards.
This memo is a product of the DVB/DAVIC interoperability consortium
which has been adopted as a work item of the IPCDN WG. Comments are
solicited and should be addressed to the author.
1. The SNMP Management Framework
The SNMP Management Framework presently consists of five major
components:
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o An overall architecture, described in RFC 2571 [RFC2571].
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
STD 16, RFC 1155 [RFC1155], STD 16, RFC 1212 [RFC1212] and RFC
1215 [RFC1215]. The second version, called SMIv2, is described
in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and
STD 58, RFC 2580 [RFC2580].
o Message protocols for transferring management information. The
first version of the SNMP message protocol is called SNMPv1 and
described in STD 15, RFC 1157 [RFC1157]. A second version of
the SNMP message protocol, which is not an Internet standards
track protocol, is called SNMPv2c and described in RFC 1901
[RFC1901] and RFC 1906 [RFC1906]. The third version of the
message protocol is called SNMPv3 and described in RFC 1906
[RFC1906], RFC 2572 [RFC2572] and RFC 2574 [RFC2574].
o Protocol operations for accessing management information. The
first set of protocol operations and associated PDU formats is
described in STD 15, RFC 1157 [RFC1157]. A second set of
protocol operations and associated PDU formats is described in
RFC 1905 [RFC1905].
o A set of fundamental applications described in RFC 2573
[RFC2573] and the view-based access control mechanism described
in RFC 2575 [RFC2575].
A more detailed introduction to the current SNMP Management
Framework can be found in RFC 2570 [RFC2570].
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 memo 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 (use of Counter64). Some machine readable
information in SMIv2 will be converted into textual descriptions in
SMIv1 during the translation process. However, this loss of machine
readable information is not considered to change the semantics of
the MIB.
2. Glossary
2.1. CATV
Originally "Community Antenna Television", now used to refer to any
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cable or hybrid fiber and cable system used to deliver video signals
to a community.
2.2. DAVIC
Digital Audiovisual Council. International council for
internetworking audio and video systems.
2.3. Downstream
The direction from the head-end towards the subscriber.
2.4. DVB
Digital Video Broadcasting. The DVB projects produce open and
interoperable global standards for digital audio and video
distribution.
2.5. EuroModem.
EuroModem. A specification for an interoperable European Cable
Modem [EUROM].
2.6. Head-end
The origination point in most cable systems of the subscriber video
signals. Generally also the location of the INA equipment.
2.7. INA
Interactive Network Adapter. This can act as a bridge or router in
the cable head-end. It is responsible for controlling the bandwidth
available to each NIU.
2.8. NIU
Network Interface Unit. The unit is located at the subscriber
premises and provides interactive services via the cable network.
The NIU is under the control of the INA, but may request additional
bandwidth/connections when required. The NIU can act as a bridge or
router.
2.9. RF
Radio Frequency.
2.10. Upstream
The direction from the subscriber towards the head-end.
3. Overview
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This MIB provides a set of objects required for the management of
EuroModem v1.0 compliant NIUs. The MIB specification is derived from
the EuroModem v1.0 specification [EUROM].
EuroModem NIUs are currently IPv4 only devices and may implement
either SNMPv1 or SNMPv3. This MIB is intended for NIUs that
implement SNNMPv3 and IPv4, however all IP addresses have been
represented as described in [RFC2851] to aid future migration to
IPv6.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in
this document are to be interpreted as described in [RFC2119].
3.1. Structure of the MIB
This MIB is structured into nine groups:
o The dvbNiuSystem group extends the MIB-II 'system' group with
objects needed for cable device system management.
o The dvbNiuSoftware group provides objects necessary for
managing software images and upgrades via download. See 3.2.1
o The dvbNiuDhcp group configures DHCP/BOOTP functionality
provided by the NIU. This group is optional. See 3.2.2
o The dvbNiuEvent group provides control and logging for event
reporting. See 3.2.3
o The dvbNiuIpFilter group configures filters at the IP layer.
The IP filter table is also used to provide support for anti
spoofing, NAT, NAPT and TOS mapping. This group is optional.
See 3.3
o The dvbNiuNat group provides basic configuration for the NIU
NAT capability. This group is optional.
o The dvbNiuNapt group provides basic configuration for the NIU
NAPT capability. This group is optional.
o The dvbNiuEthFilter group configures filters at the link layer.
This is primarily intended for use when the NIU is performing
Ethernet MAC bridging. This group is optional. See 3.3
o The dvbNiuCpe group provides control over which IP addresses
may be used by customer premises equipment (e.g. PCs) serviced
by a given NIU. This provides anti-spoofing control at the
point of origin for a large cable modem system. This group is
optional. See 3.3
3.2. Management requirements
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3.2.1. Software Management
The NIU may download and store multiple software images. The method
for performing the download and using the image is as follows:
o set dvbNiuSwServer to the address of the TFTP server for
software upgrades.
o set dvbNiuSwFilename to the filename including path of the
image to download to the NIU.
o set dvbNiuDownloadSlot to the image slot on the NIU in which to
place the downloaded image. By default this will be set to the
next free slot or the first slot designated as 'backup'.
o set dvbNiuSwAdminStatus to 'initUpgrd'.
The status of the software download is obtained by reading
dvbNiuSwAdminStatus. If the NIU was unable to successfully perform
the download, the status returned will reflect the cause. Upon
successful download the operator must configure dvbNiuSwVerTable if
they wish to use the image as the boot or backup version. Note only
one image may be marked as bootable.
3.2.2. IP Address Assignment
IP addresses may be assigned to NIU interfaces using static and
dynamic assignments. Objects are provided by the MIB to support
both methods. dvbNiuStaticIpTable provides objects to assign static
IP addresses to NIU interfaces, where each interface may have
multiple IP addresses. An IP address assignment in the table MUST
NOT be removed from the table if the destination address of the SNMP
packet removing it is using that IP address.
dvbNiuDhcpTable provides objects for managing dynamically assigned
IP addresses via DHCP and BOOTP. DHCP/BOOTP requests may be for NIU
interfaces and relayed requests from the subscriber. If an NIU
interface does not have dynamic IP address allocation enabled then
the IP address of the interface MUST be specified in
dvbNiuStaticIpTable.
Note: The dvbNiuStaticIpTable should be used with care. Where
possible dvbNiuDhcpTable SHOULD be used in preference. When an
interface has both a static IP address assigned and dynamic
addresses assignment enabled, the assigned dynamic address overrides
all assignments for that interface in the dvbNiuStaticIpTable table.
3.2.3. Events and Traps
This MIB provides control facilities for reporting events through
traps and non-volatile logging. If events are reported through
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traps, the specified conventions must be followed. Other means of
event reporting are outside the scope of this document.
Vendors SHOULD provide time-of-day clocks in NIUs to provide useful
time stamping of events. Where possible this SHOULD be synchronised
with a central time source, this will aid fault finding when
multiple equipment logs are being investigated.
When dvbNiuEventPolicy is set to clearNow(4), the first entry in the
log MUST be the date and time the log was cleared and the source IP
address of the SNMP SET request which caused the log to be cleared.
For each vendor-specific event that is reportable via TRAP, the
vendor must create an enterprise-specific trap definition. Trap
definitions MUST include the event reason encoded as SnmpAdminString
and should be defined as:
trapName NOTIFICATION-TYPE
OBJECTS {
ifIndex,
eventReason,
other useful objects
}
STATUS current
DESCRIPTION
"trap description"
::= Object Id
Note that ifIndex is only included if the event or trap is interface
related.
An example (fake) vendor defined trap might be:
xyzVendorRsUncorrHighMark NOTIFICATION-TYPE
OBJECTS {
eventReason,
xyzRsUncorrCount
}
STATUS current
DESCRIPTION
"Sent by a NIU when a configurable number of reed
solomon uncorrectable errors occur during the sampling
period (5 minutes). Used to warn a management station
of potential degradation of the HFC."
::= { xyzTraps 23 }
In this example eventReason is a SnmpAdminString providing a human
readable error message and xyzRsUncorrCount is a Integer32 which
indicates the number of reed solomon uncorrectable errors during the
epoch.
3.2.4. Trap Throttling
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The NIU MUST provide support for trap message throttling as
described below. The network operator can employ message rate
throttling or trap limiting by manipulating the appropriate MIB
variables.
3.2.4.1. Trap rate throttling
Network operators may employ either of two rate control methods. In
the first method, the device ceases to send traps when the rate
exceeds the specified maximum message rate. It resumes sending
traps only if reactivated by a network management station request.
In the second method, the device resumes sending traps when the rate
falls below the specified maximum message rate.
The network operator configures the specified maximum message rate
by setting the measurement interval (in seconds), and the maximum
number of traps to be transmitted within the measurement interval.
The operator can query the operational throttling state (to
determine whether traps are enabled or blocked by throttling) of the
device, as well as query and set the administrative throttling state
(to manage the rate control method) of the device.
3.2.4.2. Limiting the trap rate
Network operators may wish to limit the number of traps sent by a
device over a specified time period. The device ceases to send
traps when the number of traps exceeds the specified threshold. It
resumes sending traps only when the measurement interval has passed.
The network operator defines the maximum number of traps he is
willing to handle and sets the measurement interval to a large
number (in hundredths of a second). For this case, the
administrative throttling state is set to stop at threshold which is
the maximum number of traps.
See "Techniques for Managing Asynchronously Generated Alerts"
[RFC1224] for further information.
3.3. Protocol Filters
The NIU MIB provides objects for both Ethernet and IP protocol
filters. The Ethernet protocol filter entries can be used to limit
NIU forwarding to a restricted set of network-layer protocols (such
as IP, IPX, NetBIOS, and Appletalk).
The IP protocol filter entries can be used to restrict upstream or
downstream traffic based on source and destination IP addresses,
transport-layer protocols (such as TCP, UDP, and ICMP), and source
and destination TCP/UDP port numbers.
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In general, a NIU applies filters (or more properly, classifiers) in
an order appropriate to the layering model. Specifically, the
Ethernet layer filters are applied first, then the IP layer inbound
filter and finally the IP layer outbound
*******************
* Ethernet Filter *
*******************
|
v
********************
* IP Anti-Spoofing *
********************
|
v
****************
* IP Filter In *
****************
|
v
*****************
* IP Filter Out *
*****************
3.3.1. Ethernet EtherType/SNAP/LLC Filters
dvbNiuEthernetFilterTable
The Ethernet (level-2) filters are contained in the
dvbNiuEthernetFilterTable and are applied to level-2 frames entering
the cable modem from either the DVB MAC interface or from one of the
CPE (Ethernet or other Ethernet like) interfaces. These filters are
used to prohibit the processing and forwarding of certain types of
level-2 traffic that may be disruptive to the network. The filters,
as currently specified, can be set to cause the NIU to either drop
frames which match at least one filter, or to process a frame which
matches at least filter. Some examples of possible configurations
would be to only permit IP (and ARP) traffic, or to drop NETBUEI
traffic.
3.3.2 IP Anti-Spoofing Filters - dvbNiuCpeTable
IP Anti-spoofing filters are applied to packets entering the NIU
from one of the CPE interfaces and are intended to prevent a
subscriber from stealing or mis-using IP addresses that were not
assigned to the subscriber. If the filters are active (enabled),
the source address of the IP packet must match at least one IP
address/range in this table or it is discarded without further
processing.
The table can be automatically populated where the first N different
IP addresses seen from the CPE side of the NIU are used to
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automatically populate the table. The anti-spoofing filters are
specified in the dvbNiuCpeTable and the policy for automatically
creating filters in that table is controlled by dvbDevCpeEnroll and
dvbNiuCpeMax as well as the network management agent.
3.3.3. IP Filtering - dvbNiuIpFilterTable
The IP Filtering table acts as a classifier table. Each row in the
table describes a template against which IP packets are compared.
The template includes source and destination addresses (and their
associated masks), upper level protocol (e.g. TCP, UDP), source and
destination port ranges, TOS and TOS mask. A row also contains
interface and traffic direction match values which have to be
considered in combination. All columns of a particular row must
match the appropriate fields in the packet, and must match the
interface and direction items for the packet to result in a match to
the packet.
When classifying a packet, the table is scanned beginning with the
lowest number filter. If the agent finds a match, it performs the
specified action. If the matched filter has the continue bit set,
the agent continues the scan possibly matching additional filters
and performing the specified actions. This allows the agent to take
one set of actions for the 24.0.16/255.255.255.0 group and one set
of actions for telnet packets to/from 24.0.16.30 and these sets of
actions may not be mutually exclusive.
Once a packet is matched, one of five actions happen based on the
setting of dvbNiuFilterAction in the row. The actions are:
o Discarded. The packet is dropped, and no further processing is
required.
o Accept. The packet is accepted and processing of the packet
continues.
o NAT. The packet is to be accepted and have NAT applied.
Processing of the packet continues using its new IP address.
o NAPT. The packet is to be accepted and have NAT applied.
Processing of the packet continues using its new IP address and
port number.
o TosMap. Invokes the action of rewriting the TOS bits in the IP
header based up the entry in dvbNiuIpTOSMapTable identified by
dvbNiuIpFilterActionPtr.
If dvbNiuIpFilterContinue is set to true, scanning of the table
continues (unless the packet was discarded) and additional matches
may result.
4. Definitions
DVB-CABLE-NIU-MIB DEFINITIONS ::= BEGIN
IMPORTS
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MODULE-IDENTITY,
OBJECT-TYPE,
Counter32,
Integer32,
Unsigned32,
experimental
FROM SNMPv2-SMI
InetAddress,
InetAddressType
FROM INET-ADDRESS-MIB
RowStatus,
DateAndTime,
TruthValue,
TEXTUAL-CONVENTION
FROM SNMPv2-TC
SnmpAdminString
FROM SNMP-FRAMEWORK-MIB
OBJECT-GROUP,
MODULE-COMPLIANCE
FROM SNMPv2-CONF
InterfaceIndexOrZero,
InterfaceIndex,
ifIndex
FROM IF-MIB;
dvbDevice OBJECT IDENTIFIER ::= { experimental 110 }
dvbNiu MODULE-IDENTITY
LAST-UPDATED "0102030000Z"
ORGANIZATION "IETF IPCDN Working Group
DVB/DAVIC Interoperability Consortium Technical
Working Group"
CONTACT-INFO
" Andrew Valentine
Postal: Engineering Design Centre
Hughes Network Systems Ltd
Saxon Street,
Linford Wood,
Milton Keynes.
MK14 6LD
ENGLAND
Tel: +44 1908 221122
Fax: +44 1908 221127
E-mail: a.valentine@eu.hns.com
IETF IPCDN Working Group
General Discussion: ipcdn@ietf.org
Subscribe: http://www.ietf.org/mailman/listinfo/ipcdn
Archive: ftp://ftp.ietf.org/ietf-mail-archive/ipcdn
Co-chairs: Richard Woundy, rwoundy@cisco.com
Andrew Valentine, a.valentine@eu.hns.com"
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DESCRIPTION "The MIB modules for NIUs that
conform to the EuroModem specification. This
MIB assumes the NIU implements MIB-II RFC 1213"
REVISION "0102030000Z"
DESCRIPTION "Description for dvbNiuStaticIpStatus updated.
Description for dvbNiuCpeStatus updated."
REVISION "0101150000Z"
DESCRIPTION "ORGANIZATION and CONTACT-INFO updated.
dvbNiuCpeIpMax recommended default is now -1,
this is based on experience from another MIB
with a simlar table."
REVISION "0011010000Z"
DESCRIPTION "New dvbNiuMulticast object. NAT descriptions
updated. New and simpler to implement
Anti-spoofing table dvbNiuCpe,
and IP filter table modified to support this."
REVISION "0005150000Z"
DESCRIPTION "All objects of type IpAddress now consist of
two objects (See RFC2851). Descriptions for
DHCP related objects have been fixed. Indices
for some the tables have been modified to
improve use."
REVISION "0003050000Z"
DESCRIPTION "dvbNiuNmAccessTable has been removed as this
MIB is intended for SNMPv3"
REVISION "9912030000Z"
DESCRIPTION "All references to modem/Cdm have been replaced
with NIU. Fixed group references in the
compliance section. Removed DEFVAL clause from
scalar objects. Corrected description of
dvbNiuEventTable. dvbNiuDhcpTable has been
modified to support backup DHCP servers.
dvbNiuEuroloader object has been added to
enable or disable the EuroLoader.
dvbNiuOperStatus now only reflects the NIU
status, MAC status has been moved to the
interface MIB."
REVISION "9910010000Z"
DESCRIPTION "The mib has been modified to incorporate the
comments made by the WGT during the
27/28 Sep 1999 meeting. The most significant
changes were to the DHCP group and to the
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management of traps. Also some groups are now
optional."
REVISION "9907071500Z"
DESCRIPTION "The initial version of the MIB"
::= {dvbDevice 1}
-- Sub divided dvbNiu into MIB objects and conformance
dvbNiuMIBobjects OBJECT IDENTIFIER ::= {dvbNiu 1}
dvbNiuMIBConform OBJECT IDENTIFIER ::= {dvbNiu 2}
-- Define groups under dvbNiuMIBobjects
dvbNiuSystem OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 1}
dvbNiuSoftware OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 2}
dvbNiuDhcp OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 3}
dvbNiuEvent OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 4}
dvbNiuIpFilter OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 5}
dvbNiuNat OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 6}
dvbNiuNapt OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 7}
dvdNiuEthFilter OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 8}
dvbNiuCpe OBJECT IDENTIFIER ::= {dvbNiuMIBobjects 9}
--Define identifiers under dvbNiuMIBConform
dvbNiuCompliances OBJECT IDENTIFIER ::= {dvbNiuMIBConform 1}
dvbNiuGroups OBJECT IDENTIFIER ::= {dvbNiuMIBConform 2}
-- Definition of textual conventions
DvbEventPriority ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"This represents possible event priorities. These are
ordered from most (emergency) critical to least
(debug)critical."
SYNTAX INTEGER {
emergency(1),
alert(2),
critical(3),
error(4),
warning(5),
notice(6),
information(7),
debug(8)
}
-- Definition of MIB objects
-- ===============================================================
-- = NIU System Group =
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-- ===============================================================
dvbNiuMibVersion OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The MIB version number."
-- DEFVAL { '1.0' }
::= { dvbNiuSystem 1}
dvbNiuSerialNum OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the serial number of the equipment. It should
identify the manufacturer, model and revsion of the
equiment"
::= { dvbNiuSystem 2 }
dvbNiuResetNow OBJECT-TYPE
SYNTAX INTEGER {
resetNow(1),
ready(2)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"When this object is set to resetNow it will cause a
hardware reset followed by sign on. When read this object
returns ready."
::= { dvbNiuSystem 3 }
dvbNiuResetCounts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This counts the number of system resets since last power
on."
::= { dvbNiuSystem 4}
dvbNiuDateAndTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The date and time. See RFC1903"
::= { dvbNiuSystem 5}
dvbNiuOperStatus OBJECT-TYPE
SYNTAX INTEGER {
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provisioning(1),
running(2),
stopped(3),
failed(4),
other(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The operational status of the NIU.
provisioning - The NIU is currently provisioning.
running - The NIU has at least one operating connection.
stopped - The NIU has no operating connection.
failed - The NIU has experienced a failure which prevents
further operation.
other - used for any case that is not explicitly
identified"
::= { dvbNiuSystem 6 }
dvbNiuModemtype OBJECT-TYPE
SYNTAX INTEGER {
classA(1),
classB(2),
other(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The EuroModem class to which the NIU belongs as specified
in ECCA EuroModem Specification version 1.0"
::= { dvbNiuSystem 7 }
-- Static IP address assignment table
dvbNiuStaticIpTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuStaticIpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is used to assign static IP addresses to NIU
interfaces. It needs to be used with care! DHCP/BOOTP
assigned addresses overide entries in this table.
The table is related to ifTable in the IF-MIB."
::= { dvbNiuSystem 8 }
dvbNiuStaticIpEntry OBJECT-TYPE
SYNTAX DvbNiuStaticIpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row can only be created if there is a corresponding row
in ifTable. The IP address to be assigned must be unique
within the NIU for the address type. The interface is
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identified by ifIndex.
For the HFC interface which is identified by 3 interfaces,
the dvbRccMacLayer I/F shall be used to identify it.
Rows are created/delete using dvbNiuStaticIpStatus."
INDEX { ifIndex, dvbNiuStaticIpAddrType, dvbNiuStaticIpAddr }
::= { dvbNiuStaticIpTable 1 }
DvbNiuStaticIpEntry ::= SEQUENCE {
dvbNiuStaticIpAddrType InetAddressType,
dvbNiuStaticIpAddr InetAddress,
dvbNiuStaticIpMaskType InetAddressType,
dvbNiuStaticIpMask InetAddress,
dvbNiuStaticIpStatus RowStatus
}
dvbNiuStaticIpAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The type of IP address assigned to the interface."
::= { dvbNiuStaticIpEntry 1 }
dvbNiuStaticIpAddr OBJECT-TYPE
SYNTAX InetAddress (SIZE (1..64))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP address assigned to the interface."
::= { dvbNiuStaticIpEntry 2 }
dvbNiuStaticIpMaskType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address expressed by the mask."
::= { dvbNiuStaticIpEntry 3 }
dvbNiuStaticIpMask OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The IP subnet mask for the interface."
::= { dvbNiuStaticIpEntry 4 }
dvbNiuStaticIpStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This controls and reflects the status of the row.
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Rows can be created by using both createAndGo and
createAndWait. Rows can be modified/deleted ONLY if the
SNMP set request destination IP address is NOT assigned by
the row being modified/deleted. The only exception to this
rule is if DHCP has been enabled for the same interface."
::= { dvbNiuStaticIpEntry 5 }
-- Removed and functionality replaced by RFC2573
-- dvbNiuNmAccessTable OBJECT-TYPE
-- SYNTAX SEQUENCE OF DvbNiuNmAccessEntry
-- MAX-ACCESS not-accessible
-- STATUS current
-- DESCRIPTION
-- "This table controls access to SNMP objects by network
-- management stations. If the table is empty, access
-- to SNMP objects is unrestricted. This table exists only
-- on SNMPv1 or v2c agents and does not exist on SNMPv3
-- agents. See the conformance section for details.
-- Specifically, for v3 agents, the appropriate MIBs and
-- security models apply in lieu of this table.
-- An empty table will ONLY allow network management access
-- from the HFC network, any IP address is accepted.
-- Simultaneous write access to this MIB is not recommended"
-- := { dvbNiuSystem 9 }
dvbNiuConfigSet OBJECT-TYPE
SYNTAX INTEGER {
storeConfig(1),
readConfig(2),
setFactory(3),
local(4),
localUnsaved(5),
localSaved(6),
factoryDefault(7)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object is used to manage the configuration of the
NIU. The following can be used to set the object.
storeConfig - stores the current configuration to non
volatile storage. This action changes
configuration status to localSaved
readConfig - retrieves the configuration held in non
volatile storage. This action changes
configuration status to local
setFactory - sets the current configuration to factory
default. This excludes static assigned IP
addresses. This action changes configuration
status to factoryDefault
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When the object is read it reports the configuration being
used.
local - the configuration is unchanged since being
retrieved from non volatile storage. When
changed it becomes localUnsaved
localUnsaved - the configuration has changed and requires
storing. When stored it becomes
localSaved
localSaved - the current configuration has been saved
since being retrieved from non volatile
storage
factoryDefault - the current configuration is the factory
default and requires saving. Once saved
it becomes localSaved. If modified it
becomes localUnsaved"
::= { dvbNiuSystem 10 }
dvbNiuEuroloader OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
disabled(2)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Enables and disables the EuroLoader."
::= { dvbNiuSystem 11 }
dvbNiuImplSet OBJECT-TYPE
SYNTAX BITS {
dhcp(0),
ipFilters(1),
ethFilters(2),
addrTransNat(3),
addrTransNapt(4),
cpeIpControl(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object when read identifies which optional groups have
been implemented. Implemented groups have their bit set.
The bits represent the following:
dhcp - dvbNiuDhcp group
ipFilters - dvbNiuIpFilter group
ethFilters - dvbNiuEthFileter group
addrTransNat - dvbNiuNat group
addrTransNapt - dvbNiuNapt group
cpeIpControl - dvbNiuCpe group"
::= { dvbNiuSystem 12 }
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dvbNiuMulticast OBJECT-TYPE
SYNTAX INTEGER {
disabled(1),
downstreamOnly(2),
upstreamOnly(3),
enabled(4)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object is used to restrict the level of multicast
support provided by the NIU.
disabled - No IGMP or multicast packets are forwarded
through the NIU in either direction.
downstreamOnly - Only multicast packets in the downstream
direction will be forwarded for the group to
which the subscriber has membership. IGMP
messages are allowed to manage group
membership for downstream groups only. Any
upstream multicast packets are discarded.
upstreamOnly - Only multicast packets in the upstream
direction will be forwarded by the NIU. IGMP
messages are allowed to manage group
membership for upstream groups only.
enabled - Multicast forwarding in the downstream and
upstream direction is allowed. IGMP
messages are allowed to manage group
membership for both upstream and downstream
multicast groups."
::= { dvbNiuSystem 13 }
-- ===============================================================
-- = Software Group =
-- ===============================================================
-- Software version table
dvbNiuSwVerTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuSwVerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is used to check the versions of software stored
in the NIU. It is also used to configure which/when
versions of software is executed."
::= { dvbNiuSoftware 1 }
dvbNiuSwVerEntry OBJECT-TYPE
SYNTAX DvbNiuSwVerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"There will be a row for every storage slot within the
NIU. A slot is a location where a full software image
can be stored. Slot 0, is reserved for RAM."
INDEX { dvbNiuSwSlot }
::= { dvbNiuSwVerTable 1 }
DvbNiuSwVerEntry ::= SEQUENCE {
dvbNiuSwSlot Integer32,
dvbNiuSwVersion SnmpAdminString,
dvbNiuSwState INTEGER,
dvbNiuSwAction INTEGER,
dvbNiuSwDateTime DateAndTime
}
dvbNiuSwSlot OBJECT-TYPE
SYNTAX Integer32 (1..100)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The slot number the software image is held in. Slot 0 is
reserved for RAM, it is used to identify an image directly
loaded into RAM e.g. for debug purposes. The slots should
be consecutively numbered starting from 1."
::= { dvbNiuSwVerEntry 1 }
dvbNiuSwVersion OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The version of the software located in the slot. This is
a manufacturer dependant string."
::= { dvbNiuSwVerEntry 2 }
dvbNiuSwState OBJECT-TYPE
SYNTAX INTEGER {
executing(1),
failed(2),
none(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The execution state of the software in the slot. If the
s/w is currently executing the state will be executing(1).
If the s/w tried to execute but failed it will be
failed(2). If the s/w is not in use then it will be
none(3)."
::= { dvbNiuSwVerEntry 3 }
dvbNiuSwAction OBJECT-TYPE
SYNTAX INTEGER {
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boot(1),
backup(2),
none(3),
emptySlot(4)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"When the NIU is initialising, this identifies which s/w
image should be used.
boot - identifies that this s/w should be used at
initialisation. There must be one s/w version
with this action and there must be only one.
backup - is used to identify a s/w version to use in
the event that the boot version fails.
Multiple s/w versions may have this action.
In this case they will be tried in slot order.
none - is used to identify a s/w version that is not
used at initialisation.
emptySlot - identifies the slot as containing no s/w.
If this is applied to a slot that currently
contains a s/w image the image will be
erased and not identified in the slot."
::= { dvbNiuSwVerEntry 4 }
dvbNiuSwDateTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The date and time the image was downloaded to the slot."
::= { dvbNiuSwVerEntry 5 }
-- End of software version table
dvbNiuSwServerAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The type of address used for the TFTP server."
::= { dvbNiuSoftware 2 }
dvbNiuSwServer OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This is the IP address of the TFTP server used for s/w
updates"
::= { dvbNiuSoftware 3 }
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dvbNiuSwFilename OBJECT-TYPE
SYNTAX OCTET STRING (SIZE(0..500))
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This is the filename including the path for the software
image that is to be downloaded."
::= { dvbNiuSoftware 4 }
dvbNiuSwDownloadSlot OBJECT-TYPE
SYNTAX Integer32 (0..100)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This identifies the image slot which the software is to be
downloaded into. The operator can manually select the slot
to download into. Slot 0 is a special case which is used to
identify a direct to RAM download, which should only be
used for diagnostic purposes. By default this object will
point to the first empty slot. If there are no empty slots
it will point to the first backup image."
::= { dvbNiuSoftware 5 }
dvbNiuSwAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
initUpgrd(1),
contactingTFTPServer(2),
downloadInProgress(3),
failureTFTP(4),
badImage(5),
badHardware(6),
downloadSuccessful(7),
idle(8)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This will administer the software upgrade and
provide status of its progress.
InitiateUpgrade - This is the only admin selectable
value and initiates the upgrade
ContactingTFTPServer - The TFTP server is being contacted
DownloadInProgress - The image is currently being
downloaded to the Niu
TFTPFailure - There was a failure at the TFTP
layer while downloading
BadImage - The downloaded software image failed
an integrity check
BadHardware - The downloaded software image is not
suitable for the H/W platform
DownloadSuccessful - The downloaded software image has
been successful
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Idle - No attempt to download software has
been made since the last reset"
::= { dvbNiuSoftware 6 }
-- ===============================================================
-- = DHCP Group =
-- ===============================================================
dvbNiuDhcpTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuDhcpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is used to manage the DHCP/BOOTP functionality
on a per interface basis. All DHCP/BOOTP requests will
be via the HFC interface."
::= { dvbNiuDhcp 1 }
dvbNiuDhcpEntry OBJECT-TYPE
SYNTAX DvbNiuDhcpEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"There will be a row for every interface within the
equipment.
For the HFC interface which is identified by 3 interfaces,
the dvbRccMacLayer I/F shall be used to identify it.
For an interface it is possible to specify the DHCP/BOOTP
server to be used to obtain an IP address for the interface
and any DHCP/BOOTP requests received on that interface that
require relaying. Backup DHCP/BOOTP servers can be
specified for each interface."
INDEX { ifIndex, dvbNiuDhcpIndex }
::= { dvbNiuDhcpTable 1 }
DvbNiuDhcpEntry ::= SEQUENCE {
dvbNiuDhcpIndex Unsigned32,
dvbNiuDhcpServerAddrType InetAddressType,
dvbNiuDhcpServer InetAddress,
dvbNiuDhcpRelay INTEGER,
dvbNiuDhcpReqIf INTEGER,
dvbNiuDhcpSerType INTEGER,
dvbNiuDhcpState INTEGER,
dvbNiuDhcpStatus RowStatus
}
dvbNiuDhcpIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Index used to order the application of backup
entries."
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::= { dvbNiuDhcpEntry 1 }
dvbNiuDhcpServerAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address for the DHCP server."
::= { dvbNiuDhcpEntry 2 }
dvbNiuDhcpServer OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The IP address of the DHCP / BOOTP server to be used for
DHCP/BOOTP requests for the / received by the interface.
This server MUST be accessible through the HFC interface.
The broadcast IP address must be used when the IP address
is to be unspecified or the interface is the HFC
interface."
::= { dvbNiuDhcpEntry 3 }
dvbNiuDhcpRelay OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
disabled(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is used to select whether the NIU will relay
DHCP/BootP requests received from this interface to the HFC
interface. This option is ignored for the HFC interface.
enabled - relay DHCP/BootP as per RFCs 951,1542, 2131
disabled - discard DHCP/BootP"
DEFVAL { disabled }
::= { dvbNiuDhcpEntry 4 }
dvbNiuDhcpReqIf OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
disabled(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is used to select whether the NIU will request an IP
address by DHCP/BootP for this interface via the HFC
interface. If this is disabled then there must be an entry
in the static IP table for this interface.
enabled - request address by DHCP/BootP
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disabled - Use static IP address assignment"
-- DEFVAL { enabled } for the HFC interface
::= { dvbNiuDhcpEntry 5 }
dvbNiuDhcpSerType OBJECT-TYPE
SYNTAX INTEGER {
primary(1),
backup(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is used to identify whether the specified server for
the interface is the primary server or backup. In the
event that the primary server does not respond, the backup
server is used. There can be only one primary server for
an interface, but multiple backup servers. The backup
servers use the values dvbNiuDhcpRelay and dvbNiuDhcpReqIf
specified for the primary server for the interface, if a
primary server is present otherwise the values are as
defined for the backup server row. The order in which
backup servers are tried is implied by the value of
dvbNiuDhcpIndex, lowest first. This field is not
applicable for the HFC interface."
DEFVAL { primary }
::= { dvbNiuDhcpEntry 6 }
dvbNiuDhcpState OBJECT-TYPE
SYNTAX INTEGER {
idle(1),
waitingForDHCPoffer(2),
waitingForDHCPack(3),
assigned(4)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the status for DHCP for this interface.
idle - No DHCP request has been made
waitingForDHCPoffer - Waiting for DHCP offer
waitingForDHCPack - Waiting for DHCP ack
assigned - IP address for I/F assigned by DHCP."
::= { dvbNiuDhcpEntry 7 }
dvbNiuDhcpStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. Rows in this table may be created by either the
create-and-go or create-and-wait paradigms. There is no
restriction on changing values in a row of this table while
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the row is active."
::= { dvbNiuDhcpEntry 8 }
-- ===============================================================
-- = Event Group =
-- ===============================================================
dvbNiuEventPolicy OBJECT-TYPE
SYNTAX INTEGER {
wrap(1),
stop(2),
oneHour(3),
clearNow(4)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This defines event log policy.
wrap When full the log wraps
stop Stop event logging when full
oneHour Clear the log at the start of every hour
clearNow Clears the event log. Previous policy is
restored.
At initial startup this object has the default value of
wrap(1)."
::= { dvbNiuEvent 1 }
-- Event control table
dvbNiuEventControlTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuEventControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table defines the action to be taken for the defined
event priorities. A row will exist for each priority:
Emergency, Alert, Critical, Error, Warning, Notice,
Information and Debug. A bit field is used to identify the
action to be taken for the event priority. Actions can be:
place the event in the event table; issue an SNMP Trap"
::= { dvbNiuEvent 2 }
dvbNiuEventControlEntry OBJECT-TYPE
SYNTAX DvbNiuEventControlEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"There is a row per event and are recorded in chronological
order."
INDEX { dvbNiuEventCtrlPriority }
::= { dvbNiuEventControlTable 1 }
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DvbNiuEventControlEntry ::= SEQUENCE {
dvbNiuEventControlPriority DvbEventPriority,
dvbNiuEventControlAction BITS
}
dvbNiuEventControlPriority OBJECT-TYPE
SYNTAX DvbEventPriority
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The priority level that is controlled by this entry.
These are ordered from most (emergency) to least (debug)
critical. Each event with a NIU has a particular
priority level associated with it (as defined by the
vendor). During normal operation no event more critical
than notice(6) should be generated. Events between warning
and emergency should be generated at appropriate levels of
problems (e.g. emergency when the box is about to
crash)."
::= { dvbNiuEventControlEntry 1 }
dvbNiuEventControlAction OBJECT-TYPE
SYNTAX BITS {
local(0),
trap(1)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This defines the actions to perform when an event happens
of this priority. local causes the event to be written to
the local event log. trap causes a trap to be issued."
::= { dvbNiuEventControlEntry 2 }
-- Currently no traps are defined, these need to be added.
-- End of Event control table
dvbNiuEventTableMaxSize OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum number of entries the event log may hold"
::= { dvbNiuEvent 3 }
-- Event table
dvbNiuEventTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuEventEntry
MAX-ACCESS not-accessible
STATUS current
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DESCRIPTION
"Contains a log of network and device events that may be of
interest in fault isolation and trouble shooting."
::= { dvbNiuEvent 4 }
dvbNiuEventEntry OBJECT-TYPE
SYNTAX DvbNiuEventEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Entries are created when an event occurrs.
dvbNiuEventPolicy can be used to clear the table in
addition individual events can be deleted."
INDEX { dvbNiuEventIndex }
::= { dvbNiuEventTable 1 }
DvbNiuEventEntry ::= SEQUENCE {
dvbNiuEventIndex Unsigned32,
dvbNiuEventType DvbEventPriority,
dvbNiuEventDateTime DateAndTime,
dvbNiuEventDescription SnmpAdminString,
dvbNiuEventCode SnmpAdminString,
dvbNiuEventStatus RowStatus
}
dvbNiuEventIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This provides relative ordering of the objects in the event
log. This object will always increase except when
(a) the log is reset via dvbNiuEventPolicy,
(b) the device reboots and does not implement non-
volatile storage for this log, or (c) it reaches
the value 2^31. The next entry for all the above
cases is 1."
::= { dvbNiuEventEntry 1 }
dvbNiuEventType OBJECT-TYPE
SYNTAX DvbEventPriority
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the priority of the event."
::= { dvbNiuEventEntry 2 }
dvbNiuEventDateTime OBJECT-TYPE
SYNTAX DateAndTime
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the date and time the event occurred."
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::= { dvbNiuEventEntry 3 }
dvbNiuEventDescription OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is a vendor specific textual description of the
event."
::= { dvbNiuEventEntry 4 }
dvbNiuEventCode OBJECT-TYPE
SYNTAX SnmpAdminString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the event code which uniquely identifies the event.
The event codes should be in the form tppxxxxx where:-
t - identifies who allocated the event identifier; d =
dvb, v = vendor
pp - identifies the priority; em = emergency, al = alert,
cr = critical, er = error, wa = warning, no = notice,
in = information, de = debug
xxxxxxx - the event identifier which is 5 characters."
::= { dvbNiuEventEntry 5 }
dvbNiuEventStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This is used to delete individual events. The only valid
management operation is destroy, which causes the event to
be deleted. When read this object should always return
active."
::= { dvbNiuEventEntry 6 }
-- End of Event table
-- These apply to traps sent to all
dvbNiuEvThrottleAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
unconstrained(1),
maintainBelowThreshold(2),
stopAtThreshold(3),
inhibited(4)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Controls the transmission of traps with respect to the
trap pacing threshold.
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unconstrained(1) causes traps to be transmitted without
regard to the threshold settings.
maintainBelowThreshold(2) causes trap transmission to be
suppressed if the number of traps would otherwise exceed
the threshold.
stopAtThreshold(3) causes trap transmission to cease
at the threshold, and not resume until directed to do so.
See also RFC 1224.
inhibited(4) causes all trap transmission messages to be
suppressed.
Writing to this object resets the thresholding state.
At initial startup, this object has a default value of
unconstrained(1).
All the network managers with the trap capability as per
RFC2573 will be treated as a single entity with regard to
Trap management. This is done to simplify implementation
within the NIU."
::= { dvbNiuEvent 5 }
dvbNiuEvThrottleInhibited OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If true(1), trap is currently inhibited due to thresholds
and/or the current setting of dvbNiuEvThrottleAdminStatus.
In addition, this is set to true(1) if transmission is
inhibited due to no trap (dvbNiuNmAccessEntry)
destinations having been set."
::= { dvbNiuEvent 6 }
dvbNiuEvThrottleThreshold OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"Number of trap events per DvbNiuEvThrottleInterval
to be transmitted before throttling.
At initial startup, this object returns 0."
::= { dvbNiuEvent 7 }
dvbNiuEvThrottleInterval OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
UNITS "seconds"
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The interval over which the trap threshold applies.
At initial startup, this object has a value of 1."
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::= { dvbNiuEvent 8 }
-- ===============================================================
-- = IP Filter Group =
-- ===============================================================
dvbNiuIpFilterEnable OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
countHits(3),
disabled(4)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This controls the IP filter table.
enable - Enables the IP filter table.
countHits - This option is used to debug the filter
table. It allows packets to be checked
against the filter table and increments
dvbNiuIpFilterMatches for a matching
filter, but ALL PACKETS ARE ALLOWED
THROUGH.
disabled - Disables IP filtering, all packets are
allowed through.
At initial startup this object has the default value of
disabled(4)."
::= { dvbNiuIpFilter 1 }
dvbNiuIpFilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuIpFilterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An ordered list of filters or classifiers to apply to
IP traffic. Filter application is ordered by the filter
index, rather than by a best match algorithm (Note that
this implies that the filter table may have gaps in the
index values). Packets which have matched no filters will
be discarded i.e. no hits on any filter.
Any IP packet can theoretically match multiple rows of
this table. When considering a packet, the table is
scanned in row index order (e.g. filter 10 is checked
before filter 20). If the packet matches that filter
(which means that it matches ALL criteria for that row),
actions appropriate to dvbNiuIpFilterAction and
dvbNiuIpFilterActionPtr are taken. If the packet was
discarded processing is complete. If
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dvbNiuIpFilterContinue is set to true, the filter
comparison continues with the next row in the table
looking for additional matches."
::= { dvbNiuIpFilter 2 }
dvbNiuIpFilterEntry OBJECT-TYPE
SYNTAX DvbNiuIpFilterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a filter to apply to IP traffic received on a
specified interface. All identity objects in this table
(e.g. source and destination address/mask, protocol,
source/dest port, TOS/mask, interface and direction) must
match their respective fields in the packet for any given
filter to match.
To create an entry in this table, dvbNiuIpFilterIfIndex
must be specified."
INDEX { dvbNiuIpFilterIndex }
::= { dvbNiuIpFilterTable 1 }
DvbNiuIpFilterEntry ::= SEQUENCE {
dvbNiuIpFilterIndex Unsigned32,
dvbNiuIpFilterStatus RowStatus,
dvbNiuIpFilterIfIndex InterfaceIndexOrZero,
dvbNiuIpFilterDirection INTEGER,
dvbNiuIpFilterTos OCTET STRING,
dvbNiuIpFilterTosMask OCTET STRING,
dvbNiuIpFilterSrcAddrType InetAddressType,
dvbNiuIpFilterSrcAddr InetAddress,
dvbNiuIpFilterSrcMaskType InetAddressType,
dvbNiuIpFilterSrcMask InetAddress,
dvbNiuIpFilterDstAddrType InetAddressType,
dvbNiuIpFilterDstAddr InetAddress,
dvbNiuIpFilterDstMaskType InetAddressType,
dvbNiuIpFilterDstMask InetAddress,
dvbNiuIpFilterProtocol Integer32,
dvbNiuIpFilterSrcPortLow Integer32,
dvbNiuIpFilterSrcPortHigh Integer32,
dvbNiuIpFilterDstPortLow Integer32,
dvbNiuIpFilterDstPortHigh Integer32,
dvbNiuIpFilterAction INTEGER,
dvbNiuIpFilterMatches Counter32,
dvbNiuIpFilterContinue TruthValue,
dvbNiuIpFilterActionPtr Integer32
}
dvbNiuIpFilterIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"Index used to order the application of filters.
The filter with the lowest index is always applied
first."
::= { dvbNiuIpFilterEntry 1 }
dvbNiuIpFilterStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. Specifying only this object (with the appropriate
index) on a NIU is sufficient to create a filter row which
matches all inbound packets on the Ethernet interface,
and results in the packets being discarded. Creation of
the rows may be done via either create-and-wait or
create-and-go, but the filter is not applied until this
object is set to (or changes to) active. There is no
restriction in changing any object in a row while this
object is set to active."
::= { dvbNiuIpFilterEntry 2 }
dvbNiuIpFilterIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entry interface to which this filter applies. The
value corresponds to ifIndex for either a CATV MAC or
another network interface. If the value is zero, the
filter applies to all interfaces. Default value in NIU
is the index of the customer-side (e.g. ethernet)
interface."
::= { dvbNiuIpFilterEntry 4 }
dvbNiuIpFilterDirection OBJECT-TYPE
SYNTAX INTEGER {
inbound(1),
outbound(2),
both(3)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Determines whether the filter is applied to inbound(1)
traffic, outbound(2) traffic, or traffic in both(3)
directions."
DEFVAL { inbound }
::= { dvbNiuIpFilterEntry 5 }
dvbNiuIpFilterTos OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (1))
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MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is the value to be matched to the packet's
TOS (Type of Service) value (after the TOS value
is AND'd with dvbNiuIpFilterTosMask). A value for this
object of 0 and a mask of 0 matches all TOS values."
DEFVAL { '00'h }
::= { dvbNiuIpFilterEntry 6 }
dvbNiuIpFilterTosMask OBJECT-TYPE
SYNTAX OCTET STRING ( SIZE (1) )
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The mask to be applied to the packet's TOS value before
matching."
DEFVAL { '00'h }
::= { dvbNiuIpFilterEntry 7 }
dvbNiuIpFilterSrcAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address for the source address."
::= { dvbNiuIpFilterEntry 8 }
dvbNiuIpFilterSrcAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The source IP address, or portion thereof, that is to be
matched for this filter. The source address is first
masked (and'ed) against dvbNiuIpFilterSrcMask before being
compared to this value. A value of 0 for this object
and 0 for the mask matches all IP addresses."
::= { dvbNiuIpFilterEntry 9 }
dvbNiuIpFilterSrcMaskType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address for the source address mask."
::= { dvbNiuIpFilterEntry 10 }
dvbNiuIpFilterSrcMask OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
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"A bit mask that is to be applied to the source address
prior to matching. This mask is not necessarily the same
as a subnet mask, but 1's bits must be leftmost and
contiguous."
::= { dvbNiuIpFilterEntry 11 }
dvbNiuIpFilterDstAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address for the destination address."
::= { dvbNiuIpFilterEntry 12 }
dvbNiuIpFilterDstAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The destination IP address, or portion thereof, that is
to be matched for this filter. The destination address is
first masked (and'ed) against dvbNiuIpFilterDstMask before
being compared to this value. A value of 0 for this
object and 0 for the mask matches all IP addresses."
::= { dvbNiuIpFilterEntry 13 }
dvbNiuIpFilterDstMaskType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address for the destination address mask."
::= { dvbNiuIpFilterEntry 14 }
dvbNiuIpFilterDstMask OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"A bit mask that is to be applied to the destination
address prior to matching. This mask is not necessarily
the same as a subnet mask, but 1's bits must be leftmost
and contiguous."
::= { dvbNiuIpFilterEntry 15 }
dvbNiuIpFilterProtocol OBJECT-TYPE
SYNTAX Integer32 (0..256)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The IP protocol value that is to be matched. For example:
icmp is 1, tcp is 6, udp is 17. A value of 256 matches
ANY protocol."
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DEFVAL { 256 }
::= { dvbNiuIpFilterEntry 16 }
dvbNiuIpFilterSrcPortLow OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If dvbNiuIpFilterProtocol is udp or tcp, this is the
inclusive lower bound of the transport-layer source port
range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 0 }
::= { dvbNiuIpFilterEntry 17 }
dvbNiuIpFilterSrcPortHigh OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If dvbNiuIpFilterProtocol is udp or tcp, this is the
inclusive upper bound of the transport-layer source port
range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 65535 }
::= { dvbNiuIpFilterEntry 18 }
dvbNiuIpFilterDstPortLow OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If dvbNiuIpFilterProtocol is udp or tcp, this is the
inclusive lower bound of the transport-layer destination
port range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 0 }
::= { dvbNiuIpFilterEntry 19 }
dvbNiuIpFilterDstPortHigh OBJECT-TYPE
SYNTAX Integer32 (0..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If dvbNiuIpFilterProtocol is udp or tcp, this is the
inclusive upper bound of the transport-layer destination
port range that is to be matched, otherwise it is ignored
during matching."
DEFVAL { 65535 }
::= { dvbNiuIpFilterEntry 20 }
dvbNiuIpFilterAction OBJECT-TYPE
SYNTAX INTEGER {
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discard(1),
accept(2),
nat(3),
napt(4),
tosmap(5)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This is the action to be performed if there is a match
against this filter. Possible actions are:
discard - Discard the packet.
accept - Accept the packet for further processing /
forwarding.
nat - Perform network address translation on this
packet.
This is used to identify internal addresses that
can be mapped to external addresses.
napt - Perform network port address translation on this
packet. This is used to identify internal
adresses that can be mapped to an external
address/port.
tosmap - Apply TOS to this packet."
DEFVAL { discard }
::= { dvbNiuIpFilterEntry 21 }
dvbNiuIpFilterMatches OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Counts the number of times this filter was matched.
This object is initialized to 0 at boot, or at row
creation, and is reset only upon reboot."
::= { dvbNiuIpFilterEntry 22 }
dvbNiuIpFilterContinue OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If this value is set to true and dvbNiuIpFilterAction
is not discard, continue scanning and applying
matching filter actions."
DEFVAL { false }
::= { dvbNiuIpFilterEntry 23 }
dvbNiuIpFilterActionPtr OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This object identifies the dvbNiuIpTosMapPolicyId
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in dvbNiuIpTOSMapTable that is to be applied if
dvbNiuIpFilterAction is set to tosMap.
If no matching policy exists, treat as if
dvbNiuIpFilterAction were set to accept (1).
If this object is set to the value of 0, there is no
matching policy, and dvbNiuIpTOSMapTable MUST NOT be
consulted."
DEFVAL { 0 }
::= { dvbNiuIpFilterEntry 24 }
-- End of IP filter table
-- TOS Map Table
dvbNiuIpTOSMapTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuIpTOSMapEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A Table which maps between a policy id
(dvbNiuIpTosMapPolicyId) and a policy to be applied. This
table applies only to the TOS within the IP header.
Policy ID 0 is reserved."
::= { dvbNiuIpFilter 3 }
dvbNiuIpTOSMapEntry OBJECT-TYPE
SYNTAX DvbNiuIpTOSMapEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Table used to describe Type of Service (TOS) bits
processing.
This table is an adjunct to the dvbNiuIpFilterTable.
Entries in the latter table can point to specific rows
in this (and other)tables and cause specific actions to
be taken. This table permits the manipulation of the value
of the Type of Service bits in the IP header of the matched
packet as follows:
Set the tosBits of the packet to
(tosBits & dvbNiuIpTosMapAndMask) | dvbNiuIpTosMapOrMask
This construct allows you to do a clear and set of all
the TOS bits in a flexible manner."
INDEX { dvbNiuIpTosMapIndex }
::= { dvbNiuIpTOSMapTable 1 }
DvbNiuIpTOSMapEntry ::= SEQUENCE {
dvbNiuIpTosMapIndex Unsigned32,
dvbNiuIpTosMapPolicyId Unsigned32,
dvbNiuIpTosMapStatus RowStatus,
dvbNiuIpTosMapAndMask OCTET STRING (SIZE (1)),
dvbNiuIpTosMapOrMask OCTET STRING (SIZE (1))
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}
dvbNiuIpTosMapIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The unique index for this row. There are no ordering
requirements for this table and any valid index may be
specified."
::= { dvbNiuIpTOSMapEntry 1 }
dvbNiuIpTosMapPolicyId OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The unique index for this row. There are no ordering
requirements for this table and any valid index may be
specified. This index is used by dvbNiuIpFilterPolicyId as
the pointer to the TOS mapping to be performed."
::= { dvbNiuIpTOSMapEntry 2 }
dvbNiuIpTosMapStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The object used to create and delete entries in this
table. A row created by specifying just this object
results in a row which specifies no change to the TOS
bits. A row may be created using either the create-and-go
or create-and-wait paradigms. There is no restriction on
the ability to change values in this row while the row is
active."
::= { dvbNiuIpTOSMapEntry 3 }
dvbNiuIpTosMapAndMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This value is bitwise AND'd with the matched packet's
TOS bits."
DEFVAL { 'ff'h }
::= { dvbNiuIpTOSMapEntry 4 }
dvbNiuIpTosMapOrMask OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (1))
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"After bitwise AND'ing with the above bits, the packet's
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DVB Cable Network Interface Unit MIB February 2001
TOS bits are bitwise OR'd with these bits."
DEFVAL { '00'h }
::= { dvbNiuIpTOSMapEntry 5 }
-- End of TOS Map table
-- ===============================================================
-- = NAT Group =
-- ===============================================================
-- NAT assignment table
dvbNiuNatTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuNatEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is used to list external IP addresses available
for assignment to internal IP addresses. The filter table
is used to identify internal addresses that require NAT
before entering the external domain (upstream). In the
downstream direction NAT (inverse of the NAT applied in the
upstream) is applied before applying the IP filter table.
NAT assignment algorithims are vendor dependant. When an
external IP address is no longer assigned to an IP addess,
dvbNiuNatIntIp should be all 0's. If there are no free
external addresses the packet requiring translation should
be dropped.
NAPT is not applicable to multicast packets."
::= { dvbNiuNat 1 }
dvbNiuNatEntry OBJECT-TYPE
SYNTAX DvbNiuNatEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row should be created for each external IP address
available for translation. When an internal address is
assignened to an external address, dvbNiuNatIntIp will
contained the mapped internal address."
INDEX { dvbNiuNatExtIpType, dvbNiuNatExtIp }
::= { dvbNiuNatTable 1 }
DvbNiuNatEntry ::= SEQUENCE {
dvbNiuNatExtIpType InetAddressType,
dvbNiuNatExtIp InetAddress,
dvbNiuNatIntIpType InetAddressType,
dvbNiuNatIntIp InetAddress,
dvbNiuNatStatus RowStatus
}
dvbNiuNatExtIpType OBJECT-TYPE
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SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The type of the external IP address available for NAT
assignment"
::= { dvbNiuNatEntry 1 }
dvbNiuNatExtIp OBJECT-TYPE
SYNTAX InetAddress (SIZE (1..64))
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An external IP address available for NAT assignment"
::= { dvbNiuNatEntry 2 }
dvbNiuNatIntIpType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of the internal IP address assigned for NAT."
::= { dvbNiuNatEntry 3 }
dvbNiuNatIntIp OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internal IP address assigned to the external IP
address. If no address is assigned this will be all 0's."
::= { dvbNiuNatEntry 4 }
dvbNiuNatStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This controls and reflects the status of the row.
Rows can be created by using both createAndGo and
createAndWait. Rows can be modified/deleted ONLY if the
dvbNiuNatIntIp is all 0's. notInService can be applied to
a row which currently has dvbNiuNatIntIp assigned, in this
case when dvbNiuNatIntIp become free (all 0's) the
associated dvbNiuNatExtIp cannot be used for further
assigments."
::= { dvbNiuNatEntry 5 }
-- End of NAT table
-- ===============================================================
-- = NAPT Group =
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-- ===============================================================
dvbNiuNaptAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The type of external IP address to be used for NAPT."
::= { dvbNiuNapt 1 }
dvbNiuNaptAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"The external IP address to be used for NAPT.
The filter table is used to identify internal
addresses that require NAPT before entering the
external domain (upstream). In the downstream direction
NAPT (inverse of the NAPT applied in the upstream) is
applied before applying the IP filter table. NAPT
assignment algorithims are vendor dependant. The value of
all 0's specifies that NAPT is not available and the packet
requiring it should be discarded. A value with all bits
set to 1 specifies that NAPT will use the IP address
assigned to the HFC interface.
NAPT is not applicable to multicast packets.
At initial startup this object has the default value of
all 0's"
::= { dvbNiuNapt 2 }
-- NAPT assignment table
dvbNiuNaptTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuNaptEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists the current internal/external port
assignments. The NAPT assignment algorithims used for port
assignments are vendor dependant."
::= { dvbNiuNapt 3 }
dvbNiuNaptEntry OBJECT-TYPE
SYNTAX DvbNiuNaptEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row should be created for each internal to external port
mapping. Each row contains the internal and external ports
used in the mapping, and the internal IP address of the
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host being mapped. When the assignment is no longer
required the row should be deleted."
INDEX { dvbNiuNaptExtPort }
::= { dvbNiuNaptTable 1 }
DvbNiuNaptEntry ::= SEQUENCE {
dvbNiuNaptExtPort Integer32,
dvbNiuNaptIntPort Integer32,
dvbNiuNaptIntIpType InetAddressType,
dvbNiuNaptIntIp InetAddress
}
dvbNiuNaptExtPort OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The external port assigned to the internal port/IP
Address."
::= { dvbNiuNaptEntry 1 }
dvbNiuNaptIntPort OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internal port that required mapping to the external
port."
::= { dvbNiuNaptEntry 2 }
dvbNiuNaptIntIpType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internal IP address type."
::= { dvbNiuNaptEntry 3 }
dvbNiuNaptIntIp OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internal IP address of the host to which the port
mapping is being applied."
::= { dvbNiuNaptEntry 4 }
-- End of NAPT table
-- ===============================================================
-- = Ethernet Filters Group =
-- ===============================================================
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dvbNiuEthernetFilterEnable
OBJECT-TYPE
SYNTAX INTEGER {
enabled(1),
countHits(2),
disabled(3)
}
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This controls the Ethernet filter table.
enable - Enables the Ethernet filter table.
countHits - This option is used to debug the filter
table. It allows framess to be checked
against the filter table and increments
dvbNiuEthernetFilterMatches for a matching
filter, but ALL frames ARE ALLOWED
THROUGH.
disabled - Disables Ethernet filtering, all frames
are allowed through.
At initial startup this object has the default value of
disabled(3)."
::= { dvdNiuEthFilter 1 }
dvbNiuEthernetFilterTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuEthernetFilterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A list of filters to apply to Ethernet type frames to
control the types of upper layer protocols that can be
transported. The EtherType/LLC field is examined and
the filter table is checked to see if there is a filter
for the protocol. If no match is found the frame is
discarded, otherwise the filter action is performed.
The filter table does not have to be ordered as there
can be only one possible match."
::= { dvdNiuEthFilter 2 }
dvbNiuEthernetFilterEntry OBJECT-TYPE
SYNTAX DvbNiuEthernetFilterEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Describes a filter to apply to Ethernet frame received on a
specified interface. The dvbNiuEthernetFilterProtocol in
this table must match its respective fields in the frame
for any given filter to match."
INDEX { dvbNiuEthernetFilterIndex }
::= { dvbNiuEthernetFilterTable 1 }
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DvbNiuEthernetFilterEntry ::= SEQUENCE {
dvbNiuEthernetFilterIndex Unsigned32,
dvbNiuEthernetFilterStatus RowStatus,
dvbNiuEthernetFilterIfIndex InterfaceIndexOrZero,
dvbNiuEthernetFilterEtherType INTEGER,
dvbNiuEthernetFilterProtocol Integer32,
dvbNiuEthernetFilterAction INTEGER,
dvbNiuEthernetFilterMatches Counter32
}
dvbNiuEthernetFilterIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The unique index for this row. There are no ordering
requirements for this table and any valid index may be
specified."
::= { dvbNiuEthernetFilterEntry 1 }
dvbNiuEthernetFilterStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. Creation of the rows may be done via either
create-and-wait or create-and-go, but the filter is
not applied until this object is set to (or changes to)
active. There is no restriction in changing any object
in a row while this object is set to active."
::= { dvbNiuEthernetFilterEntry 2 }
dvbNiuEthernetFilterIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The entry interface to which this filter applies. The
value corresponds to ifIndex for either a CATV MAC or
another network interface. If the value is zero, the
filter applies to all interfaces. Default value in NIUs
is the index of the customer-side (e.g. ethernet)
interface."
::= { dvbNiuEthernetFilterEntry 3 }
dvbNiuEthernetFilterEtherType OBJECT-TYPE
SYNTAX INTEGER {
ethernet2(1),
snap(2),
llc(3)
}
MAX-ACCESS read-create
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STATUS current
DESCRIPTION
"The format of the etherent frame. This can be Ethernet2,
802.2 SNAP or 802.2 LLC. This is used to correctly
locate the field identifying the protocol being
transported."
::= { dvbNiuEthernetFilterEntry 4 }
dvbNiuEthernetFilterProtocol OBJECT-TYPE
SYNTAX Integer32 (1..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The protocol to filter on. For Ethernet2 and 802.2 SNAP
the value in the EtherType field is checked. For 802.2 LLC
the valus in the SAP field is checked."
::= { dvbNiuEthernetFilterEntry 4 }
dvbNiuEthernetFilterAction OBJECT-TYPE
SYNTAX INTEGER {
accept(1),
discard(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The action to be taken when there is a filter match. If
it is accept, the frame will be forwarded otherwise
the frame will be discarded."
::= { dvbNiuEthernetFilterEntry 5 }
dvbNiuEthernetFilterMatches OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Counts the number of times this filter was matched.
This object is initialized to 0 at boot, or at row
creation, and is reset only upon reboot."
::= { dvbNiuEthernetFilterEntry 6 }
-- ===============================================================
-- = CPE IP Management and anti spoofing group =
-- ===============================================================
-- This CPE section is taken from RFC2669 and enhanced
dvbNiuCpeEnroll OBJECT-TYPE
SYNTAX INTEGER {
none(1),
any(2),
}
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MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the population of dvbNiuCpeTable.
If set to none, the filters must be set manually.
If set to any, the NIU sniffs the packets originating
from the Ethernet and enrolls up to dvbNiuCpeIpMax
addresses based on the source IP addresses of those
packets. At initial system startup, default value for this
object is any(2)."
::= { dvbNiuCpe 1 }
dvbNiuCpeIpMax OBJECT-TYPE
SYNTAX Integer32 (-1..2147483647)
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"This object controls the maximum number of CPEs allowed to
connect behind this device. If set to zero, any number of
CPEs may connect up to the maximum permitted for the
device or the maximum allowed for the subnet configured for
the CPE (subscriber) interface, whichever is the smaller.
If set to -1, no filtering is done on CPE source addresses,
and no entries are made in the dvbNiuCpeTable.
If an attempt is made to set this to a number greater than
that permitted for the device/subnet, it is set to that
maximum of the smallest value (device or subnet).
At initial system startup, default value for this object
is -1."
::= { dvbNiuCpe 2 }
dvbNiuCpeTable OBJECT-TYPE
SYNTAX SEQUENCE OF DvbNiuCpeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table lists the IP addresses seen (or permitted) as
source addresses in packets originating from the customer
interface on this device. In addition, this table can be
provisioned with the specific addresses permitted for the
CPEs via the normal row creation mechanisms."
::= { dvbNiuCpe 3 }
dvbNiuCpeEntry OBJECT-TYPE
SYNTAX DvbNiuCpeEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the dvbNiuCpeTable. There is one entry
for each IP CPE seen or provisioned. If dvbNiuCpeIpMax
is set to -1, this table is ignored, otherwise: Upon
receipt of an IP packet from the customer interface of the
CM, the source IP address is checked against this table. If
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the address is in the table, packet processing continues.
If the address is not in the table, but dvbNiuCpeEnroll
is set to any and the table size is less than
dvbNiuCpeIpMax, the address is added to the table and
packet processing continues. Otherwise, the packet is
dropped.
The filtering actions specified by this table occur after
any Ethernet filtering (dvbNiuEthernetFilterTable), but
prior to any IP filtering (dvbNiuIpFilterTable)."
INDEX { dvbNiuCpeAddrType, dvbNiuCpeIp }
::= { dvbNiuCpeTable 1 }
DvbNiuCpeEntry ::= SEQUENCE {
dvbNiuCpeIpType InetAddressType,
dvbNiuCpeIp InetAddress,
dvbNiuCpeMaskType InetAddressType,
dvbNiuCpeMask InetAddress,
dvbNiuCpeSource INTEGER,
dvbNiuCpeStatus RowStatus
}
dvbNiuCpeIpType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The type of IP address used for the identified CPE."
::= { dvbNiuCpeEntry 1 }
dvbNiuCpeIp OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The IP address to which this entry applies."
::= { dvbNiuCpeEntry 2 }
dvbNiuCpeMaskType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of IP address for the CPE address mask."
::= { dvbNiuCpeEntry 3 }
dvbNiuCpeMask OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
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"A bit mask that is to be applied to the CPE source IP
address prior to matching. This mask is not necessarily
the same as a subnet mask, but 1's bits must be leftmost
and contiguous. When created automatically this will be
all 1's. For manual entries, it can be used to represent a
range (subnet) thus reducing the number of entries in the
table."
::= { dvbNiuCpeEntry 4 }
dvbNiuCpeSource OBJECT-TYPE
SYNTAX INTEGER {
other(1),
manual(2),
learned(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object describes how this entry was created. If the
value is manual(2), this row was created by a network
management action (either configuration, or SNMP set).
If set to learned(3), then it was found via
looking at the source IP address of a received packet."
::= { dvbNiuCpeEntry 5 }
dvbNiuCpeStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Controls and reflects the status of rows in this
table. Creation of the rows may be done via either
create-and-wait or create-and-go. There is no restriction
in changing any object in a row while this object is set to
active."
::= { dvbNiuCpeEntry 6 }
-- Conformance statements
dvbNiuCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for EuroModem NIUs
which implement the DVB-CABLE-NIU-MIB MIB. An
implmentation only has to support IPv4 addresses to be
compliant."
MODULE -- dvbNiu
MANDATORY-GROUPS { dvbNiuSystemGroup,
dvbNiuSoftwareGroup,
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dvbNiuEventGroup
}
GROUP dvbNiuDhcpGroup
DESCRIPTION
"The group is optional but should be implemented if
DHCP/BOOTP is implemented."
GROUP dvbNiuIpFilterGroup
DESCRIPTION
"The group is optional but should be implemented if
dvbNiuNatGroup or dvdNiuNaptGroup are implemeneted.
The implementation of this group does not mandate the
implementation of dvbNiuNatGroup or dvdNiuNaptGroup."
GROUP dvbNiuNatGroup
DESCRIPTION
"The group is optional but should be implemented if NAT
is implemented."
GROUP dvbNiuNaptGroup
DESCRIPTION
"The group is optional but should be implemented if NAPT
is implemented."
GROUP dvbNiuEthFilterGroup
DESCRIPTION
"The group is optional but should be implemented if
Ethernet filtering is implemented. If the NIU supports
bridging then it is strongly recommended this group is
implemented."
GROUP dvbNiuCpeGroup
DESCRIPTION
"The group is optional but should be implemented to
prevent spoofing type attacks and restrict the number
of CPE devices attached to the NIU."
OBJECT dvbNiuStaticIpMaskType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuStaticIpMask
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuSwServerAddrType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
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addresses."
OBJECT dvbNiuSwServer
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuDhcpServerAddrType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuDhcpServer
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses. The broadcast address to be used for IPv4 is
255.255.255.255 and should be the default value."
OBJECT dvbNiuIpFilterDstAddrType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuIpFilterDstAddr
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses. The default value for this object for IPv4 is
0.0.0.0"
OBJECT dvbNiuIpFilterSrcAddrType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuIpFilterSrcAddr
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses. The default value for this object for IPv4 is
0.0.0.0"
OBJECT dvbNiuIpFilterDstMaskType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
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OBJECT dvbNiuIpFilterDstMask
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses. The default value for this object for IPv4 is
0.0.0.0"
OBJECT dvbNiuIpFilterSrcMaskType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuIpFilterSrcMask
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses. The default value for this object for IPv4 is
0.0.0.0"
OBJECT dvbNiuNatIntIpType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuNatIntIp
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuNaptAddrType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuNaptAddr
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuNaptIntIpType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuNaptIntIp
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
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"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuCpeIpType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuCpeIp
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuCpeMaskType
SYNTAX InetAddressType { ipv4(1)}
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
OBJECT dvbNiuCpeMask
SYNTAX InetAddress (SIZE(4))
DESCRIPTION
"An implementation is only required to support IPv4
addresses."
::= { dvbNiuCompliances 1 }
dvbNiuSystemGroup OBJECT-GROUP
OBJECTS {
dvbNiuConfigSet,
dvbNiuMibVersion,
dvbNiuSerialNum,
dvbNiuResetNow,
dvbNiuResetCounts,
dvbNiuDateAndTime,
dvbNiuOperStatus,
dvbNiuModemtype,
dvbNiuStaticIpMaskType,
dvbNiuStaticIpMask,
dvbNiuStaticIpStatus,
dvbNiuEuroloader,
dvbNiuImplSet,
dvbNiuMulticast
}
STATUS current
DESCRIPTION
"A collection of objects providing basic system level
control and instrumentation of the EuroModem."
::= { dvbNiuGroups 1 }
dvbNiuSoftwareGroup OBJECT-GROUP
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OBJECTS {
dvbNiuSwVersion,
dvbNiuSwState,
dvbNiuSwAction,
dvbNiuSwDateTime,
dvbNiuSwServerAddrType,
dvbNiuSwServer,
dvbNiuSwFilename,
dvbNiuSwDownloadSlot,
dvbNiuSwAdminStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing control and
instrumentation of the EuroModem's software."
::= { dvbNiuGroups 2 }
dvbNiuDhcpGroup OBJECT-GROUP
OBJECTS {
dvbNiuDhcpServerAddrType,
dvbNiuDhcpServer,
dvbNiuDhcpRelay,
dvdNiuDhcpReqIf,
dvbNiuDhcpState,
dvbNiuDhcpSerType,
dvbNiuDhcpStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing control over the
EuroModem's DHCP/Bootp functionality."
::= { dvbNiuGroups 3 }
dvbNiuEventGroup OBJECT-GROUP
OBJECTS {
dvbNiuEventPolicy,
dvbNiuEventControlTable,
dvbNiuEventTableMaxSize,
dvbNiuTrapRate,
dvbNiuEventControlPriority,
dvbNiuEventControlAction,
dvbNiuEventType,
dvbEventDateTime,
dvbEventDescription,
dvbEventCode,
dvbEventStatus,
dvbNiuEvThrottleAdminStatus,
dvbNiuEvThrottleInhibited,
dvbNiuEvThrottleThreshold,
dvbNiuEvThrottleInterval
}
STATUS current
DESCRIPTION
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"A collection of objects used to control and monitor
EuroModem events."
::= { dvbNiuGroups 4 }
dvbNiuIpFilterGroup OBJECT-GROUP
OBJECTS {
dvbNiuIpFilterDstAddrType,
dvbNiuIpFilterDstAddr,
dvbNiuIpFilterDstMaskType,
dvbNiuIpFilterDstMask,
dvbNiuIpFilterStatus,
dvbNiuIpFilterProtocol,
dvbNiuIpFilterIfIndex,
dvbNiuIpFilterSrcPortLow,
dvbNiuIpFilterDirection,
dvbNiuIpFilterSrcPortHigh,
dvbNiuIpFilterTos,
dvbNiuIpFilterDstPortLow,
dvbNiuIpFilterTosMask,
dvbNiuIpFilterDstPortHigh,
dvbNiuIpFilterSrcAddrType,
dvbNiuIpFilterSrcAddr,
dvbNiuIpFilterAction,
dvbNiuIpFilterMatches,
dvbNiuIpFilterSrcMaskType,
dvbNiuIpFilterSrcMask,
dvbNiuIpFilterContinue,
dvbNiuIpFilterEnable,
dvbNiuIpTosMapIndex,
dvbNiuIpTosMapStatus,
dvbNiuIpTosMapAndMask,
dvbNiuIpTosMapOrMask
}
STATUS current
DESCRIPTION
"A collection of objects providing a filtering capability
at the IP layer."
::= { dvbNiuGroups 5 }
dvbNiuEthFilterGroup OBJECT-GROUP
OBJECTS {
dvbNiuEthernetFilterStatus,
dvbNiuEthernetFilterIfIndex,
dvbNiuEthernetFilterEtherType,
dvbNiuEthernetFilterAction,
dvbNiuEthernetFilterMatches,
dvbNiuEthernetFilterEnable
}
STATUS current
DESCRIPTION
"A collection of objects providing a filtering capability
at the Ethernet layer."
::= { dvbNiuGroups 6 }
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dvbNiuNatGroup OBJECT-GROUP
OBJECTS {
dvbNiuNatIntIpType,
dvbNiuNatIntIp,
dvbNiuNatStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing address translation at
either the address level"
::= { dvbNiuGroups 7 }
dvbNiuNaptGroup OBJECT-GROUP
OBJECTS {
dvbNiuNaptAddrType,
dvbNiuNaptAddr,
dvbNiuNaptIntPort,
dvbNiuNaptIntIpType,
dvbNiuNaptIntIp
}
STATUS current
DESCRIPTION
"A collection of objects providing address translation at
either the port level"
::= { dvbNiuGroups 8 }
dvbNiuCpeGroup OBJECT-GROUP
OBJECTS {
dvbNiuCpeEnroll,
dvbNiuCpeIpMax,
dvbNiuCpeIpType,
dvbNiuCpeIp,
dvbNiuCpeMaskType,
dvbNiuCpeMask,
dvbNiuCpeSource,
dvbNiuCpeStatus
}
STATUS current
DESCRIPTION
"A collection of objects providing anti spoofing / CPE
address management"
::= { dvbNiuGroups 9 }
END
5. Security Considerations
This MIB relates to a system which will provide metropolitan public
internet access. As such, improper manipulation of the objects
represented by this MIB may result in denial of service to a large
number of end-users. In addition, manipulation of
dvbNiuEthernetFilterTable and dvbNiuIpFilterTable may allow an end-
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DVB Cable Network Interface Unit MIB February 2001
user to increase their service levels, spoof their IP addresses or
affect other end-users in either a positive or negative manner.
There are a number of management objects defined in this MIB that
have a MAX-ACCESS clause of read-write and/or read-create. Such
objects may be considered sensitive or vulnerable in some network
environments. The support for SET operations in a non-secure
environment without proper protection can have a negative effect on
network operations. In addition to those mentioned above:
o dvbNiuStaticIpTable and dvbNiuDhcpTable can be manipulated to
prevent IP addresses being assigned to the NIU after a reset,
which results in a denial of service.
o The NIU may have its software changed by the actions of the
management system. An improper software load may result in
substantial vulnerabilities and the loss of the ability of the
management system to control the NIU.
o Setting dvbDevEvThrottleAdminStatus = unconstrained(1) may
cause flooding of traps, which can disrupt network service.
This MIB does not affect confidentiality of services on a cable
system. The DVB/DAVIC Interoperability Consortium expects to produce
a MIB for the security mechanism in the near future.
SNMPv1 by itself is not a secure environment. Even if the network
itself is secure (for example by using IPSec), even then, there is
no control as to who on the secure network is allowed to access and
GET/SET (read/change/create/delete) the objects in this MIB. It is
recommended that the implementers consider the security features as
provided by the SNMPv3 framework. Specifically, the use of the User-
based Security Model RFC 2574 [RFC2574] and the View- based Access
Control Model RFC 2575 [RFC2575] is recommended.
It is then a customer/user responsibility to ensure that the SNMP
entity giving access to an instance of this MIB, is properly
configured to give access to the objects only to those principals
(users) that have legitimate rights to indeed GET or SET
(change/create/delete) them.
6. References
[RFC2571] Harrington, D., Presuhn, R., and B. Wijnen,
"An Architecture for Describing SNMP Management
Frameworks", RFC 2571, April 1999.
[RFC1155] Rose, M., and K. McCloghrie,
"Structure and Identification of Management Information
for TCP/IP-based Internets", STD 16, RFC 1155, May 1990.
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DVB Cable Network Interface Unit MIB February 2001
[RFC1212] Rose, M., and K. McCloghrie,
"Concise MIB Definitions", STD 16, RFC 1212, March 1991.
[RFC1215] M. Rose,
"A Convention for Defining Traps for use with the SNMP",
RFC 1215, March 1991.
[RFC2578] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,J.,
Rose, M., and S. Waldbusser, "Structure of Management
Information Version 2 (SMIv2)", STD 58, RFC 2578, April
1999.
[RFC2579] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M., and S. Waldbusser, "Textual Conventions
for SMIv2", STD 58, RFC 2579, April 1999.
[RFC2580] McCloghrie, K., Perkins, D., Schoenwaelder, J., Case,
J., Rose, M., and S. Waldbusser, "Conformance Statements
for SMIv2", STD 58, RFC 2580, April 1999.
[RFC1157] Case, J., Fedor, M., Schoffstall, M., and J. Davin,
"Simple Network Management Protocol", STD 15, RFC 1157,
May 1990.
[RFC1901] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
"Introduction to Community-based SNMPv2", RFC 1901,
January 1996.
[RFC1906] Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
"Transport Mappings for Version 2 of the Simple Network
Management Protocol (SNMPv2)", RFC 1906, January 1996.
[RFC2572] Case, J., Harrington D., Presuhn R., and B. Wijnen,
"Message Processing and Dispatching for the Simple
Network Management Protocol (SNMP)", RFC 2572, April
1999.
[RFC2574] Blumenthal, U., and B. Wijnen, "User-based Security
Model (USM) for version 3 of the Simple Network
Management Protocol (SNMPv3)", RFC 2574, April 1999.
[RFC1905] 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.
[RFC2573] Levi, D., Meyer, P., and B. Stewart, "SNMPv3
Applications", RFC 2573, April 1999.
[RFC2575] Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
Access Control Model (VACM) for the Simple Network
Management Protocol (SNMP)", RFC 2575, April 1999.
[RFC2570] Case, J., Mundy, R., Partain, D., and B. Stewart,
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DVB Cable Network Interface Unit MIB February 2001
"Introduction to Version 3 of the Internet-standard
Network Management Framework", RFC 2570, April 1999.
[RFC1224] Steinberg, L., "Techniques for Managing Asynchronously
Generated Alerts", RFC 1224, May 1991.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2851] M. Daniele, B. Haberman, S. Routhier, J. Schoenwaelder,
"Textual Conventions for Internet Network Addresses",
June 2000
[EUROM] ECCA,"Technical Specification of a European Cable Modem
for digital bi-directional communications via cable
networks", Version 1.0, 12th May 1999
7. Acknowledgments
This MIB was the result of the work undertaken by DVB/DAVIC
Interoperability consortium to define a common management interface
for EuroModem compliant NIU.
RFC 2669 edited by Michael St Johns was used as the template for
this document.
8. Author's Addresses
Andrew Valentine
Engineering Design Centre
Hughes Network Systems Ltd
Saxon Street,
Linford Wood,
Milton Keynes.
MK14 6LD
ENGLAND
Phone: +44 1908 221122
Email: a.valentine@eu.hns.com
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Full Copyright Statement
Copyright (C) The Internet Society (2000). All Rights Reserved.
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph
are included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
Valentine Expires August 2001 59
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