Network Working Group Cheenu Srinivasan
Internet Draft Parama Networks, Inc.
Expires: April 2003
Arun Viswanathan
Force10 Networks, Inc.
Thomas D. Nadeau
Cisco Systems, Inc.
October 2002
Multiprotocol Label Switching (MPLS) Label Switching Router (LSR)
Management Information Base
draft-ietf-mpls-lsr-mib-09.txt
Status of this Memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC 2026.
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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 describes managed objects for
modeling a Multiprotocol Label Switching (MPLS) Label Switching
Router (LSR).
Table of Contents
1. Introduction 2
2. Terminology 3
3. The SNMP Management Framework 3
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4. Feature Checklist 4
5. Outline 5
5.1. Summary of LSR MIB 5
6. Brief Description of MIB Objects 5
6.1. mplsInterfaceConfTable 6
6.2. mplsInterfacePerfTable 6
6.3. mplsInSegmentTable 6
6.4. mplsInSegmentPerfTable 6
6.5. mplsOutSegmentTable 6
6.6. mplsOutSegmentPerfTable 6
6.7. mplsXCTable 6
6.8. mplsLabelStackTable 7
6.9. mplsTrafficParamTable 7
7. Use of 32-bit and 64-bit Counters 7
8. Example of LSP Setup 7
9. Application of the Interface Group to MPLS 9
9.1. Support of the MPLS Layer by ifTable 9
10. The Use of RowPointer 10
11. MPLS Label Switching Router MIB Definitions 11
12. Security Considerations 41
13. Acknowledgments 42
14. References 42
15. Authors' Addresses 44
16. Full Copyright Statement 44
1. Introduction
This memo defines a portion of the Management Information Base
(MIB) for use with network management protocols in the Internet
community. In particular, it describes managed objects for
modeling a Multi-Protocol Label Switching (MPLS) [RFC3031] Label
Switching Router (LSR).
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
RFC 2119, reference [RFC2119].
2. Terminology
This document uses terminology from the document describing the
MPLS architecture [RFC3031]. A label switched path (LSP) is
modeled as a connection consisting of one or more incoming
segments (in-segments) and/or one or more outgoing segments (out-
segments) at a Label Switching Router (LSR). The association or
interconnection of the in-segments and out-segments is
accomplished by using a cross-connect. We use the terminology
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"connection" and "LSP" interchangeably where the meaning is clear
from the context.
3. The SNMP Management Framework
The SNMP Management Framework presently consists of five major
components:
- An overall architecture, described in RFC 2571 [RFC2571].
- 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 STD
16, 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].
- 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].
- 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].
- 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).
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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.
4. Feature Checklist
The MPLS Label Switching Router MIB (LSR MIB) is designed to
satisfy the following requirements and constraints:
- The MIB supports LSP establishment via an MPLS signaling
protocol wherein the LSP parameters are specified using this
MIB at the head end of the LSP and end-to-end LSP
establishment is accomplished via signaling. The MIB also
supports manually configured LSPs, i.e. those for which label
associations at each hop of the LSP are provisioned by the
administrator via this MIB.
- The MIB supports the enabling and disabling of MPLS capability
on MPLS capable interfaces of an LSR.
- The MIB allows resource sharing between two or more LSPs, i.e.
it allows specification of sharing of bandwidth and other LSR
resources between different LSPs.
- Both per-platform and per-interface label spaces are supported.
- MPLS packets can be forwarded solely based on an incoming top
label [RFC3031, RFC3032].
- Support is provided for next-hop resolution when the outgoing
interface is a shared media interface. In the point-to-
multipoint case, each outgoing segment can reside on a
different shared media interface.
- The MIB supports point-to-point, point-to-multipoint and
multipoint-to-point connections at an LSR.
- For multipoint-to-point connections all outgoing packets can
have the same top label.
- For multipoint-to-point connections, the outgoing resources of
the merged connections can be shared.
- For multipoint-to-point connections, packets from different
incoming connections can have distinct outgoing label stacks
beneath the (identical) top label.
- In the point-to-multipoint case each outgoing connection can
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have a distinct label stack including the top label.
- All the members of a point-to-multipoint connection can share
the resources allocated for the ingress segments.
- The MIB provides cross-connect capability to "pop" an incoming
label and forward the packet with the remainder of the label
stack unchanged and without pushing any labels ("pop-and-go")
[RFC3032].
- The MIB supports persistent as well as non-persistent LSPs.
- Performance counters are provided for in-segments and out-
segments as well as for measuring MPLS performance on a per-
interface basis.
5. Outline
Configuring LSPs through an LSR involves the following steps:
- Enabling MPLS on MPLS capable interfaces.
- Configuring in-segments and out-segments.
- Setting up the cross-connect table to associate segments and/or
to indicate connection origination and termination.
- Optionally specifying label stack actions.
- Optionally specifying segment traffic parameters.
5.1. Summary of LSR MIB
The MIB objects for performing these actions consist of the
following tables:
- The interface configuration table (mplsInterfaceConfTable),
which is used for enabling the MPLS protocol on MPLS-capable
interfaces.
- The in-segment (mplsInSegmentTable) and out-segment
(mplsOutSegmentTable) tables, which are used for configuring
LSP segments at an LSR.
- The cross-connect table (mplsXCTable), which is used to
associate in and out segments together, in order to form a
cross-connect.
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- The label stack table (mplsLabelStackTable), which is used for
specifying label stack operations.
- The Traffic Parameter table (mplsTrafficParamTable), which is
used for specifying LSP-related traffic parameters.
Further, the MPLS in-segment and out-segment performance tables,
mplsInSegmentPerfTable and mplsOutSegmentPerfTable, contain the
objects necessary to measure the performance of LSPs, and
mplsInterfacePerfTable has objects to measure MPLS performance on
a per-interface basis.
These tables are described in the subsequent sections.
6. Brief Description of MIB Objects
Sections 6.1-6.2 describe objects pertaining to MPLS-capable
interfaces of an LSR. The objects described in Sections 6.3-6.8,
were derived from the Incoming Label Map (ILM) and Next Hop Label
Forwarding Entry (NHLFE) as specified in the MPLS architecture
document [RFC3031]. Section 6.9 describes objects for specifying
traffic parameters for in and out segments. It is appropriate to
note that the in-segment, out-segment, and cross-connect tables
were modeled after similar tables found in [RFC2515].
6.1. mplsInterfaceConfTable
This table represents the interfaces that are MPLS capable. An
LSR creates an entry in this table for every MPLS capable
interface on that LSR.
6.2. mplsInterfacePerfTable
This table contains objects to measure the MPLS performance of
MPLS capable interfaces and is an AUGMENT to
mplsInterfaceConfTable.
6.3. mplsInSegmentTable
This table contains a description of the incoming MPLS segments to
an LSR and their associated parameters.
6.4. mplsInSegmentPerfTable
The MPLS In-Segment Performance Table has objects to help measure
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the performance of an incoming segment configured on an LSR. It
is an AUGMENT to mplsInSegmentTable. High capacity counters are
provided for objects that are likely to wrap around quickly on
high-speed interfaces.
6.5. mplsOutSegmentTable
The Out-Segment Table contains a description of the outgoing MPLS
segments at an LSR and their associated parameters.
6.6. mplsOutSegmentPerfTable
The MPLS Out-Segment Table contains objects to help measure the
performance of an outgoing segment configured on an LSR. It is an
AUGMENT to mplsOutSegmentTable. High capacity counters are
provided for objects that are likely to wrap around quickly on
high-speed interfaces.
6.7. mplsXCTable
The mplsXCTable specifies information for associating segments
together in order to instruct the LSR to switch between the
specified segments. It supports point-to-point, point-to-multi-
point and multi-point-to-point connections.
The operational status object indicates the packet forwarding
state of a cross-connect entry. For example, when the operational
status objects is 'down' it indicates that the specified cross-
connect entry will not forward packets. Likewise, when it is set
to 'up' it indicates that packets will be forwarded.
The administrative status object indicates the forwarding state
desired by the operator.
6.8. mplsLabelStackTable
The mplsLabelStackTable specifies the label stack to be pushed
onto a packet, beneath the top label. Entries to this table are
referred to from mplsXCTable.
6.9. mplsTrafficParamTable
The mplsTrafficParamTable contains objects for specifying the
traffic parameters of in-segments and out-segments. Entries in
this table are referred to from mplsInSegmentTable and
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mplsOutSegmentTable.
7. Use of 32-bit and 64-bit Counters
64-bit counters are provided in this MIB for high speed interfaces
where the use of 32-bit counters might be impractical. The
requirements on the use of 32-bit and 64-bit counters (copied
verbatim from [RFC2863]) are as follows.
For interfaces that operate at 20,000,000 (20 million) bits per
second or less, 32-bit byte and packet counters MUST be supported.
For interfaces that operate faster than 20,000,000 bits/second,
and slower than 650,000,000 bits/second, 32-bit packet counters
MUST be supported and 64-bit octet counters MUST be supported.
For interfaces that operate at 650,000,000 bits/second or faster,
64-bit packet counters AND 64-bit octet counters MUST be
supported.
8. Example of LSP Setup
In this section we provide a brief example of setting up an LSP
using the MIB objects described in section 11. While this example
is not meant to illustrate every nuance of the MIB, it is intended
as an aid to understanding some of the key concepts. It is meant
to be read after going through the MIB itself.
Suppose that one would like to manually create a best-effort,
unidirectional LSP. Assume that the LSP enters the LSR via MPLS
interface A with ifIndex 12 and exits the LSR via MPLS interface B
with ifIndex 13. Let us assume that we do not wish to have a
label stack beneath the top label on the outgoing labeled packets.
The following example illustrates which rows and corresponding
objects might be created to accomplish this. Those objects
relevant to illustrating the relationships amongst different
tables are shown here. Other objects may be needed before
conceptual row activation can happen.
The RowStatus values shown in this section are those to be used in
the set request, typically createAndGo(4) which is used to create
the conceptual row and have its status immediately set to active.
A subsequent retrieval operation on the conceptual will return a
different value, such as active(1). Please see [RFC2579] for a
detailed discussion on the use of RowStatus.
First, the traffic parameter entries must be set-up for both
segments.
In mplsTrafficParamTable for the incoming direction:
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{
mplsTrafficParamIndex = 5
mplsTrafficParamMaxRate = 100000,
mplsTrafficParamMeanRate = 100000,
mplsTrafficParamMaxBurstSize = 2000,
mplsTrafficParamRowStatus = createAndGo(4)
}
In mplsTrafficParamTable for the outgoing direction:
{
mplsTrafficParamIndex = 6
mplsTrafficParamMaxRate = 100000,
mplsTrafficParamMeanRate = 100000,
mplsTrafficParamMaxBurstSize = 2000,
mplsTrafficParamRowStatus = createAndGo(4)
}
Note that if we were setting up a bi-directional LSP, the segments
in the reverse direction can share the traffic parameter entries
(and hence resources) with the segments in the forward direction.
We must next create the appropriate in-segment and out-segment
entries with suitable traffic parameters by pointing to the
appropriate traffic parameter entries that we have just created.
In mplsInSegmentTable:
{
mplsInSegmentIfIndex = 12, -- incoming interface
mplsInSegmentLabel = 21, -- incoming label
mplsInSegmentNPop = 1,
-- RowPointer MUST point to the first accesible column.
mplsInSegmentTrafficParamPtr = mplsTrafficParamMaxRate.5,
mplsInSegmentRowStatus = createAndGo(4)
}
In mplsOutSegmentTable:
{
mplsOutSegmentIndex = 1,
mplsOutSegmentIfIndex = 13, -- outgoing interface
mplsOutSegmentPushTopLabel = true(1),
mplsOutSegmentTopLabel = 22, -- outgoing label
-- RowPointer MUST point to the first accesible column.
mplsOutSegmentTrafficParamPtr = mplsTrafficParamMaxRate.6,
-- Other mandatory parameters needed to activate the row go
here.
mplsOutSegmentRowStatus = createAndGo(4)
}
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Next, a cross-connect entry is created thereby associating the
newly created segments together.
In mplsXCTable:
{
mplsXCIndex = 2,
mplsXCLspId = 'c021041502'H, -- 192.33.4.21.2
mplsInSegmentIfIndex = 12,
mplsInSegmentLabel = 21,
mplsOutSegmentIndex = 1,
mplsXCIsPersistent = false (1),
mplsLabelStackIndex = 0, -- only a single
-- outgoing label
-- Other mandatory parameters for activating the row go here.
mplsXCRowStatus = createAndGo(4)
}
Note that the mplsInSegmentXCIndex and mplsOutSegmentXCIndex
objects will automatically be populated with the value 2 when
these segments are referred to from the corresponding cross-
connect entry.
9. Application of the Interface Group to MPLS
The Interfaces Group of MIB II defines generic managed objects for
managing interfaces. This memo contains the media-specific
extensions to the Interfaces Group for managing MPLS interfaces.
This memo assumes the interpretation of the Interfaces Group to be
in accordance with [RFC2863] which states that the interfaces
table (ifTable) contains information on the managed resource's
interfaces and that each sub-layer below the internetwork layer of
a network interface is considered an interface. Thus, the MPLS
interface is represented as an entry in the ifTable. The inter-
relation of entries in the ifTable is defined by Interfaces Stack
Group defined in [RFC2863].
When using MPLS interfaces, the interface stack table might appear
as follows:
+----------------------------------------+
| MPLS interface; ifType = mpls(166) +
+----------------------------------------+
| Underlying Layer +
+----------------------------------------+
In the above diagram, "Underlying Layer" refers to the ifIndex of
any interface type for which MPLS interworking has been defined.
Examples include ATM, Frame Relay, Ethernet, etc.
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9.1. Support of the MPLS Layer by ifTable
Some specific interpretations of ifTable for the MPLS layer
follow.
Object Use for the MPLS layer
ifIndex Each MPLS interface is represented by an ifEntry.
ifDescr Description of the MPLS interface.
ifType The value that is allocated for MPLS is 166.
ifSpeed The total bandwidth in bits per second for use by
the MPLS layer.
ifPhysAddress Unused.
ifAdminStatus This variable indicates the administrator's intent
as to whether MPLS should be enabled, disabled, or
running in some diagnostic testing mode on this
interface. Also see [RFC2863].
ifOperStatus This value reflects the actual operational status
of MPLS on this interface.
ifLastChange See [RFC2863].
ifInOctets The number of received octets over the interface,
i.e., the number of received, octets received as
labeled packets.
ifOutOctets The number of transmitted octets over the
interface, i.e., the number of octets transmitted
as labeled packets.
ifInErrors The number of labeled packets dropped due to
uncorrectable errors.
ifInUnknownProtos
The number of received packets discarded during
packet header validation, including packets with
unrecognized label values.
ifOutErrors See [RFC2863].
ifName Textual name (unique on this system) of the
interface or an octet string of zero length.
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ifLinkUpDownTrapEnable
Default is disabled (2).
ifConnectorPresent
Set to false (2).
ifHighSpeed See [RFC2863].
ifHCInOctets The 64-bit version of ifInOctets; supported if
required by the compliance statements in [RFC2863].
ifHCOutOctets The 64-bit version of ifOutOctets; supported if
required by the compliance statements in [RFC2863].
ifAlias The non-volatile 'alias' name for the interface as
specified by a network manager.
ifCounterDiscontinuityTime
See [RFC2863].
10. The Use of RowPointer
RowPointer is a textual convention used to identify a conceptual
row in an SNMP Table by pointing to one of its objects. In this
MIB, it is used in mplsInSegmentTable and mplsOutSegmentTable for
the following purposes. First, it indicates a particular traffic
parameter table. An example of such a table is
mplsTrafficParamTable. Second, it is used to indicate a specific
instance of a traffic parameter entry that is associated with a
given in-segment or out-segment entry. In the in-segment and out-
segment tables, mplsTrafficParamPtr MUST point to the first
column of the appropriate conceptual row [].
11. MPLS Label Switching Router MIB Definitions
MPLS-LSR-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
Integer32, Counter32, Unsigned32, Counter64, Gauge32,
zeroDotZero
FROM SNMPv2-SMI
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF
TruthValue, RowStatus, StorageType, RowPointer,
TimeStamp
FROM SNMPv2-TC
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InterfaceIndex, InterfaceIndexOrZero
FROM IF-MIB
mplsMIB, MplsLSPID, MplsLabel, MplsBitRate, MplsBurstSize,
MplsOwner
FROM MPLS-TC-MIB
AddressFamilyNumbers
FROM IANA-ADDRESS-FAMILY-NUMBERS-MIB
InetAddress, InetAddressType
FROM INET-ADDRESS-MIB
;
mplsLsrMIB MODULE-IDENTITY
LAST-UPDATED "200210051200Z" -- 5 October 2002 12:00:00 GMT
ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"
CONTACT-INFO
"
Cheenu Srinivasan
Postal: Parama Networks, Inc.
1030 Broad Street
Shrewsbury, NJ 07702
Tel: +1-732-544-9120 x731
Email: cheenu@paramanet.com
Arun Viswanathan
Postal: Force10 Networks, Inc.
1440 McCarthy Blvd
Milpitas, CA 95035
Tel: +1-408-571-3516
Email: arun@force10networks.com
Thomas D. Nadeau
Postal: Cisco Systems, Inc.
250 Apollo Drive
Chelmsford, MA 01824
Tel: +1-978-244-3051
Email: tnadeau@cisco.com
Comments about this document should be emailed
directly to the MPLS working group mailing list at
mpls@uu.net.
"
DESCRIPTION
"This MIB contains managed object definitions for the
Multiprotocol Label Switching (MPLS) Router as
defined in: Rosen, E., Viswanathan, A., and R.
Callon, Multiprotocol Label Switching Architecture,
RFC 3031, January 2001."
-- Revision history.
REVISION
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DESCRIPTION
"Initial revision, published as part of RFC XXXX."
::= { mplsMIB 2 }
-- Top level components of this MIB.
-- Notifications
mplsLsrNotifications OBJECT IDENTIFIER ::= { mplsLsrMIB 0 }
-- Tables, Scalars
mplsLsrObjects OBJECT IDENTIFIER ::= { mplsLsrMIB 1 }
-- Conformance
mplsLsrConformance OBJECT IDENTIFIER ::= { mplsLsrMIB 2 }
-- MPLS Interface Configuration Table.
mplsInterfaceConfTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsInterfaceConfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table specifies per-interface MPLS capability
and associated information."
::= { mplsLsrObjects 1 }
mplsInterfaceConfEntry OBJECT-TYPE
SYNTAX MplsInterfaceConfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A conceptual row in this table is created
automatically by an LSR for every interface capable
of supporting MPLS and is enabled to do so. A
conceptual row in this table will exist iff a
corresponding entry in ifTable exists with ifType =
mpls(166). If this associated entry in ifTable is
operationally disabled (thus disabling MPLS on that
interface), the corresponding entry in this table
MUST be deleted shortly thereafter. An conceptual
row with index 0 is created if the LSR supports per-
platform labels. This conceptual row represents the
per-platform label space and contains parameters
that apply to all interfaces that participate in the
per-platform label space. Other conceptual rows in
this table represent MPLS interfaces that may
participate in either the per-platform or per-
interface label spaces, or both. Further information
about label space participation of an interface is
provided in the DESCRIPTION clause of
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mplsInterfaceLabelParticipationType."
INDEX { mplsInterfaceConfIndex }
::= { mplsInterfaceConfTable 1 }
MplsInterfaceConfEntry ::= SEQUENCE {
mplsInterfaceConfIndex InterfaceIndexOrZero,
mplsInterfaceLabelMinIn MplsLabel,
mplsInterfaceLabelMaxIn MplsLabel,
mplsInterfaceLabelMinOut MplsLabel,
mplsInterfaceLabelMaxOut MplsLabel,
mplsInterfaceTotalBandwidth MplsBitRate,
mplsInterfaceAvailableBandwidth MplsBitRate,
mplsInterfaceLabelParticipationType BITS
}
mplsInterfaceConfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This is a unique index for an entry in the
MplsInterfaceConfTable. A non-zero index for an
entry indicates the ifIndex for the corresponding
interface entry in of the MPLS-layer in the ifTable.
Note that the per-platform label space may apply to
several interfaces, and therefore the configuration
of the per-platform label space interface parameters
will apply to all of the interfaces that are
participating in the per-platform label space."
REFERENCE
"RFC 2863 - The Interfaces Group MIB, McCloghrie, K.,
and F. Kastenholtz, June 2000"
::= { mplsInterfaceConfEntry 1 }
mplsInterfaceLabelMinIn OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the minimum value of an MPLS label that this
LSR is willing to receive on this interface."
::= { mplsInterfaceConfEntry 2 }
mplsInterfaceLabelMaxIn OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the maximum value of an MPLS label that this
LSR is willing to receive on this interface."
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::= { mplsInterfaceConfEntry 3 }
mplsInterfaceLabelMinOut OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the minimum value of an MPLS label that this
LSR is willing to send on this interface."
::= { mplsInterfaceConfEntry 4 }
mplsInterfaceLabelMaxOut OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This is the maximum value of an MPLS label that this
LSR is willing to send on this interface."
::= { mplsInterfaceConfEntry 5 }
mplsInterfaceTotalBandwidth OBJECT-TYPE
SYNTAX MplsBitRate
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value indicates the total amount of usable
bandwidth on this interface and is specified in
kilobits per second (Kbps). This variable is not
applicable when applied to the interface with index
0. When this value cannot be measured, this value
should contain the nominal bandwidth."
::= { mplsInterfaceConfEntry 6 }
mplsInterfaceAvailableBandwidth OBJECT-TYPE
SYNTAX MplsBitRate
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value indicates the total amount of available
bandwidth available on this interface and is
specified in kilobits per second (Kbps). This value
is calculated as the difference between the amount
of bandwidth currently in use and that specified in
mplsInterfaceTotalBandwidth. This variable is not
applicable when applied to the interface with index
0. When this value cannot be measured, this value
should contain the nominal bandwidth."
::= { mplsInterfaceConfEntry 7 }
mplsInterfaceLabelParticipationType OBJECT-TYPE
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SYNTAX BITS {
perPlatform (0),
perInterface (1)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Either the perPlatform(0) or perInterface(1) bit
MUST be set. Note however that an interface could
participate in both label spaces in which case both
bits would be set. If the value of the
mplsInterfaceConfIndex for this entry is zero, then
only the perPlatform(0) bit MUST be set and the
perInterface(1) bit is meaningless. If the
perInterface(1) bit is set then the value of
mplsInterfaceLabelMinIn, mplsInterfaceLabelMaxIn,
mplsInterfaceLabelMinOut, and
mplsInterfaceLabelMaxOut for this entry reflect the
label ranges for this interface. If only the
perPlatform(0) bit is set, then the value of
mplsInterfaceLabelMinIn, mplsInterfaceLabelMaxIn,
mplsInterfaceLabelMinOut, and
mplsInterfaceLabelMaxOut for this entry must be
identical to the instance of these objects with
index 0."
REFERENCE
"Rosen, E., Viswanathan, A., and R. Callon,
Multiprotocol Label Switching Architecture, RFC
3031, January 2001."
::= { mplsInterfaceConfEntry 8 }
-- End of mplsInterfaceConfTable
-- MPLS Interface Performance Table.
mplsInterfacePerfTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsInterfacePerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table provides MPLS performance information on
a per-interface basis."
::= { mplsLsrObjects 2 }
mplsInterfacePerfEntry OBJECT-TYPE
SYNTAX MplsInterfacePerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
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"An entry in this table is created by the LSR for
every interface capable of supporting MPLS. Its is
an extension to the mplsInterfaceConfEntry table."
AUGMENTS { mplsInterfaceConfEntry }
::= { mplsInterfacePerfTable 1 }
MplsInterfacePerfEntry ::= SEQUENCE {
-- incoming direction
mplsInterfaceInLabelsUsed Gauge32,
mplsInterfaceLabelLookupFailures Counter32,
-- outgoing direction
mplsInterfaceOutLabelsUsed Gauge32,
mplsInterfaceOutFragments Counter32
}
mplsInterfaceInLabelsUsed OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of labels that are in
use at this point in time on this interface in the
incoming direction. If the interface participates in
the per-platform label space only, then the value of
this instance of this object MUST be identical with
the value of the instance with index 0. If the
interface participates in the per-interface label
space, then this instance of this object MUST
represent the number of of per-interface labels that
are in use at this point in time on this interface."
::= { mplsInterfacePerfEntry 1 }
mplsInterfaceLabelLookupFailures OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of labeled packets
that have been received on this interface and were
discarded because there was no matching cross-
connect entry. This object MUST count on a per-
interface basis regardless of which label space the
interface participates in."
::= { mplsInterfacePerfEntry 2 }
mplsInterfaceOutLabelsUsed OBJECT-TYPE
SYNTAX Gauge32
MAX-ACCESS read-only
STATUS current
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DESCRIPTION
"This object counts the number of top-most labels in
the outgoing label stacks that are in use at this
point in time on this interface. This object MUST
count on a per-interface basis regardless of which
label space the interface participates in."
::= { mplsInterfacePerfEntry 3 }
mplsInterfaceOutFragments OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of outgoing MPLS
packets that required fragmentation before
transmission on this interface. This object MUST
count on a per-interface basis regardless of which
label space the interface participates in."
::= { mplsInterfacePerfEntry 4 }
-- In-segment table.
mplsInSegmentTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsInSegmentEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains the collection of incoming
segments to an LSR."
::= { mplsLsrObjects 3 }
mplsInSegmentEntry OBJECT-TYPE
SYNTAX MplsInSegmentEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents one incoming
segment. An entry can be created by a network
administrator or an SNMP agent, or an MPLS signaling
protocol. The creator of the entry is denoted by
mplsInSegmentOwner. An entry in this table is
indexed by the ifIndex of the incoming interface and
the (top) label. The value of mplsInSegmentRowStatus
cannot be active(1)unless the ifTable entry
corresponding to mplsInSegmentIfIndex exists. An
entry in this table must match any incoming packets
for further processing. A match indicates an
instance of mplsXCEntry based on which
forwarding/switching actions are taken."
INDEX { mplsInSegmentIfIndex, mplsInSegmentLabel }
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::= { mplsInSegmentTable 1 }
MplsInSegmentEntry ::= SEQUENCE {
mplsInSegmentIfIndex InterfaceIndexOrZero,
mplsInSegmentLabel MplsLabel,
mplsInSegmentNPop Integer32,
mplsInSegmentAddrFamily AddressFamilyNumbers,
mplsInSegmentXCIndex Unsigned32,
mplsInSegmentOwner MplsOwner ,
mplsInSegmentTrafficParamPtr RowPointer,
mplsInSegmentRowStatus RowStatus,
mplsInSegmentStorageType StorageType
}
mplsInSegmentIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This is a unique index for an entry in the
MplsInSegmentTable. This value represents the
interface index for the incoming MPLS interface. A
value of zero represents an incoming label from the
per-platform label space. In this case, the
mplsInSegmentLabel is interpreted to be an MPLS-type
label."
::= { mplsInSegmentEntry 1 }
mplsInSegmentLabel OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The incoming label for this segment."
::= { mplsInSegmentEntry 2 }
mplsInSegmentNPop OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The number of labels to pop from the incoming
packet. Normally only the top label is popped from
the packet and used for all switching decisions for
that packet. Note that technologies which do not
support label popping should set this value to its
default value of 1. This object cannot be modified
if mplsInSegmentRowStatus is active(1)."
DEFVAL { 1 }
::= { mplsInSegmentEntry 3 }
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mplsInSegmentAddrFamily OBJECT-TYPE
SYNTAX AddressFamilyNumbers
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The IANA address family [IANAFamily] of the incoming
packet which is used at an egress LSR to deliver
packets to the appropriate layer 3 entity. A value
of other(0) indicates that the family type is either
unknown or undefined; this is not a legal value at
an egress LSR. This object cannot be modified if
mplsInSegmentRowStatus is active(1)."
::= { mplsInSegmentEntry 4 }
mplsInSegmentXCIndex OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Index into mplsXCTable which identifies which cross-
connect entry this segment is part of. A value of
zero indicates that this entry is not referred to by
any cross-connect entry. When a cross-connect entry
is created which this in-segment is a part of, this
object is automatically updated to reflect the value
of mplsXCIndex of that cross-connect entry."
::= { mplsInSegmentEntry 5 }
mplsInSegmentOwner OBJECT-TYPE
SYNTAX MplsOwner
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Denotes the entity that created and is responsible
for managing this segment."
::= { mplsInSegmentEntry 6 }
mplsInSegmentTrafficParamPtr OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This variable represents a pointer to the traffic
parameter specification for this in-segment. This
value may point at an entry in the
mplsTrafficParamTable to indicate which
mplsTrafficParamEntry is to be assigned to this
segment. This value may optionally point at an
externally defined traffic parameter specification
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table. A value of zeroDotZero indicates best-effort
treatment. By having the same value of this object,
two or more segments can indicate resource sharing.
This object cannot be modified if
mplsInSegmentRowStatus is active(1)."
DEFVAL { zeroDotZero }
::= { mplsInSegmentEntry 7 }
mplsInSegmentRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This variable is used to create, modify, and/or
delete a row in this table."
::= { mplsInSegmentEntry 8 }
mplsInSegmentStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This variable indicates the storage type for this
object. This object cannot be modified if
mplsInSegmentRowStatus is active(1). If this
variable is set to readOnly(5), and the
corresponding LFIB entry is removed, then the agent
must remove this row shortly thereafter [RFC2579]."
::= { mplsInSegmentEntry 9 }
-- End of mplsInSegmentTable
-- In-segment performance table.
mplsInSegmentPerfTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsInSegmentPerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains statistical information for
incoming MPLS segments to an LSR."
::= { mplsLsrObjects 4 }
mplsInSegmentPerfEntry OBJECT-TYPE
SYNTAX MplsInSegmentPerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table contains statistical
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information about one incoming segment which was
configured in the mplsInSegmentTable. The counters
in this entry should behave in a manner similar to
that of the interface.
mplsInSegmentPerfDiscontinuityTime indicates the
time of the last discontinuity in these objects."
AUGMENTS { mplsInSegmentEntry }
::= { mplsInSegmentPerfTable 1 }
MplsInSegmentPerfEntry ::= SEQUENCE {
mplsInSegmentOctets Counter32,
mplsInSegmentPackets Counter32,
mplsInSegmentErrors Counter32,
mplsInSegmentDiscards Counter32,
-- high capacity counter
mplsInSegmentHCOctets Counter64,
mplsInSegmentPerfDiscontinuityTime TimeStamp
}
mplsInSegmentOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value represents the total number of octets
received by this segment. It MUST be equal to the
least significant 32 bits of mplsInSegmentHCOctets."
::= { mplsInSegmentPerfEntry 1 }
mplsInSegmentPackets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Total number of packets received by this segment."
::= { mplsInSegmentPerfEntry 2 }
mplsInSegmentErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of errored packets received on this
segment."
::= { mplsInSegmentPerfEntry 3 }
mplsInSegmentDiscards OBJECT-TYPE
SYNTAX Counter32
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MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of labeled packets received on this in-
segment, which were chosen to be discarded even
though no errors had been detected to prevent their
being transmitted. One possible reason for
discarding such a labeled packet could be to free up
buffer space."
::= { mplsInSegmentPerfEntry 4 }
mplsInSegmentHCOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The total number of octets received. This is the 64
bit version of mplsInSegmentOctets."
::= { mplsInSegmentPerfEntry 5 }
mplsInSegmentPerfDiscontinuityTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime on the most recent occasion
at which any one or more of this segment's Counter32
or Counter64 suffered a discontinuity. If no such
discontinuities have occurred since the last re-
initialization of the local management subsystem,
then this object contains a zero value."
::= { mplsInSegmentPerfEntry 6 }
-- End of mplsInSegmentPerfTable.
-- Out-segment table.
mplsOutSegmentIndexNext OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains the next appropriate value to
be used for mplsOutSegmentIndex when creating
entries in the mplsOutSegmentTable. If the number
of unassigned entries is exhausted, this object will
take on the value of 0. To obtain the
mplsOutSegmentIndex value for a new entry, the
manager must first issue a management protocol
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retrieval operation to obtain the current value of
this object. The agent should modify the value to
reflect the next unassigned index after each
retrieval operation. After a manager retrieves a
value the agent will determine through its local
policy when this index value will be made available
for reuse."
::= { mplsLsrObjects 5 }
mplsOutSegmentTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsOutSegmentEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains a representation of the outgoing
segments from an LSR."
::= { mplsLsrObjects 6 }
mplsOutSegmentEntry OBJECT-TYPE
SYNTAX MplsOutSegmentEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents one outgoing
segment. An entry can be created by a network
administrator or an SNMP agent, or an MPLS signaling
protocol. The object mplsOutSegmentOwner indicates
the creator of this entry. The value of
mplsOutSegmentRowStatus cannot be active(1)unless
the ifTable entry corresponding to
mplsOutSegmentIfIndex exists."
INDEX { mplsOutSegmentIndex }
::= { mplsOutSegmentTable 1 }
MplsOutSegmentEntry ::= SEQUENCE {
mplsOutSegmentIndex Unsigned32,
mplsOutSegmentIfIndex InterfaceIndexOrZero,
mplsOutSegmentPushTopLabel TruthValue,
mplsOutSegmentTopLabel MplsLabel,
mplsOutSegmentNextHopIpAddrType InetAddressType,
mplsOutSegmentNextHopIpAddr InetAddress,
mplsOutSegmentXCIndex Unsigned32,
mplsOutSegmentOwner MplsOwner ,
mplsOutSegmentTrafficParamPtr RowPointer,
mplsOutSegmentRowStatus RowStatus,
mplsOutSegmentStorageType StorageType
}
mplsOutSegmentIndex OBJECT-TYPE
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SYNTAX Unsigned32(0..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This value contains a unique index for this row.
While a value of 0 is not valid as an index for this
row it can be supplied as a valid value to index
mplsXCTable to access entries for which no out-
segment has been configured."
::= { mplsOutSegmentEntry 1 }
mplsOutSegmentIfIndex OBJECT-TYPE
SYNTAX InterfaceIndex
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This value must contain the interface index of the
outgoing interface. This object cannot be modified
if mplsOutSegmentRowStatus is active(1). The
mplsOutSegmentRowStatus cannot be set to active(1)
until this object is set to a value corresponding to
a valid ifEntry."
::= { mplsOutSegmentEntry 2 }
mplsOutSegmentPushTopLabel OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This value indicates whether or not a top label
should be pushed onto the outgoing packet's label
stack. The value of this variable MUST be set to
true if the outgoing interface does not support pop-
and-go (for example an ATM interface) or if it is a
tunnel origination. Note that it is considered an
error in the case that mplsOutSegmentPushTopLabel is
set to false, but the cross-connect entry which
refers to this out-segment has a non-zero
mplsLabelStackIndex. The LSR MUST ensure that this
situation does not happen. This object cannot be
modified if mplsOutSegmentRowStatus is active(1)."
DEFVAL { true }
::= { mplsOutSegmentEntry 3 }
mplsOutSegmentTopLabel OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If mplsOutSegmentPushTopLabel is true then this
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represents the label that should be pushed onto the
top of the outgoing packet's label stack. Otherwise
this value SHOULD be set to 0 by the management
station and MUST be ignored by the agent. This
object cannot be modified if mplsOutSegmentRowStatus
is active(1)."
DEFVAL { 0 }
::= { mplsOutSegmentEntry 4 }
mplsOutSegmentNextHopIpAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Indicates that the next hop address type is IPv4
when set to ipv4 (1) or IPv6 when set to ipv6 (2).
A value of unknown (0) is allowed only when the
outgoing interface is of type point-to-point. If any
other values are attempted in a set operation the
agent MUST return an inconsistentValue error. This
object cannot be modified if mplsOutSegmentRowStatus
is active(1)."
::= { mplsOutSegmentEntry 5 }
mplsOutSegmentNextHopIpAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The IPv4 or IPv6 address of the next hop. Its value
is significant only when
mplsOutSegmentNextHopIpAddrType is ipv4 (1) or ipv6
(2). Otherwise a management entity SHOULD set this
to 0 and an agent MUST ignore it. Likewise an agent
MUST return a value of 0 for a retrieval operation.
This object cannot be modified if
mplsOutSegmentRowStatus is active(1)."
::= { mplsOutSegmentEntry 6 }
mplsOutSegmentXCIndex OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Index into mplsXCTable which identifies which cross-
connect entry this segment is part of. A value of
zero indicates that this entry is not referred to by
any cross-connect entry. When a cross-connect entry
is created which this out-segment is a part of, this
object is MUST be updated by the agent to reflect
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the value of mplsXCIndex of that cross-connect
entry."
::= { mplsOutSegmentEntry 7 }
mplsOutSegmentOwner OBJECT-TYPE
SYNTAX MplsOwner
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Denotes the entity which created and is responsible
for managing this segment."
::= { mplsOutSegmentEntry 8 }
mplsOutSegmentTrafficParamPtr OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This variable represents a pointer to the traffic
parameter specification for this out-segment. This
value may point at an entry in the
mplsTrafficParamTable to indicate which
mplsTrafficParamEntry is to be assigned to this
segment. This value may optionally point at an
externally defined traffic parameter specification
table. A value of zeroDotZero indicates best-effort
treatment. By having the same value of this object,
two or more segments can indicate resource sharing.
This object cannot be modified if
mplsOutSegmentRowStatus is active(1)."
DEFVAL { zeroDotZero }
::= { mplsOutSegmentEntry 9 }
mplsOutSegmentRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"For creating, modifying, and deleting this row."
::= { mplsOutSegmentEntry 10 }
mplsOutSegmentStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"This variable indicates the storage type for this
object. This object cannot be modified if
mplsOutSegmentRowStatus is active(1). If this
variable is set to readOnly(5), and the
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corresponding LFIB entry is removed, then the agent
must remove this row shortly thereafter."
::= { mplsOutSegmentEntry 11 }
-- End of mplsOutSegmentTable
-- Out-segment performance table.
mplsOutSegmentPerfTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsOutSegmentPerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains statistical information about
outgoing segments from an LSR. The counters in this
entry should behave in a manner similar to that of
the interface."
::= { mplsLsrObjects 7 }
mplsOutSegmentPerfEntry OBJECT-TYPE
SYNTAX MplsOutSegmentPerfEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table contains statistical
information about one outgoing segment configured in
mplsOutSegmentTable.
mplsOutSegmentPerfDiscontinuityTime indicates the
time of the last discontinuity in these objects. "
AUGMENTS { mplsOutSegmentEntry }
::= { mplsOutSegmentPerfTable 1 }
MplsOutSegmentPerfEntry ::= SEQUENCE {
mplsOutSegmentOctets Counter32,
mplsOutSegmentPackets Counter32,
mplsOutSegmentErrors Counter32,
mplsOutSegmentDiscards Counter32,
-- HC counter
mplsOutSegmentHCOctets Counter64,
mplsOutSegmentPerfDiscontinuityTime TimeStamp
}
mplsOutSegmentOctets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"This value contains the total number of octets sent
on this segment. It MUST be equal to the least
significant 32 bits of mplsOutSegmentHCOctets."
::= { mplsOutSegmentPerfEntry 1 }
mplsOutSegmentPackets OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This value contains the total number of packets sent
on this segment."
::= { mplsOutSegmentPerfEntry 2 }
mplsOutSegmentErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Number of packets that could not be sent due to
errors on this segment."
::= { mplsOutSegmentPerfEntry 3 }
mplsOutSegmentDiscards OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of labeled packets received on this out-
segment, which were chosen to be discarded even
though no errors had been detected to prevent their
being transmitted. One possible reason for
discarding such a labeled packet could be to free up
buffer space."
::= { mplsOutSegmentPerfEntry 4 }
mplsOutSegmentHCOctets OBJECT-TYPE
SYNTAX Counter64
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Total number of octets sent. This is the 64 bit
version of mplsOutSegmentOctets."
::= { mplsOutSegmentPerfEntry 5 }
mplsOutSegmentPerfDiscontinuityTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
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"The value of sysUpTime on the most recent occasion
at which any one or more of this segment's Counter32
or Counter64 suffered a discontinuity. If no such
discontinuities have occurred since the last re-
initialization of the local management subsystem,
then this object contains a zero value."
::= { mplsOutSegmentPerfEntry 6 }
-- End of mplsOutSegmentPerfTable.
-- Cross-connect table.
mplsXCIndexNext OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value to be used
for mplsXCIndex when creating entries in the
mplsXCTable. The value 0 indicates that no
unassigned entries are available. To obtain the
value of mplsXCIndex for a new entry in the
mplsXCTable, the manager issues a management
protocol retrieval operation to obtain the current
value of mplsXCIndex. After each retrieval
operation, the agent should modify the value to
reflect the next unassigned index. After a manager
retrieves a value the agent will determine through
its local policy when this index value will be made
available for reuse."
::= { mplsLsrObjects 8 }
mplsXCTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsXCEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table specifies information for switching
between LSP segments. It supports point-to-point,
point-to-multipoint and multipoint-to-point
connections. mplsLabelStackTable specifies the
label stack information for a cross-connect LSR and
is referred to from mplsXCTable."
::= { mplsLsrObjects 9 }
mplsXCEntry OBJECT-TYPE
SYNTAX MplsXCEntry
MAX-ACCESS not-accessible
STATUS current
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DESCRIPTION
"A row in this table represents one cross-connect
entry. It is indexed by the following objects:
- cross-connect index mplsXCIndex that uniquely
identifies a group of cross-connect entries
- interface index of the in-segment,
mplsXCInSegmentIfIndex
- incoming label(s), mplsXCInSegmentLabel
- out-segment index, mplsXCOutSegmentIndex
LSPs originating at this LSR:
These are represented by using the special
combination of values mplsXCInSegmentIfIndex=0 and
mplsXCInSegmentLabel=0 as indexes. In this case
the mplsXCOutSegmentIndex MUST be non-zero.
LSPs terminating at this LSR:
These are represented by using the special value
mplsXCOutSegmentIndex=0 as index.
Special labels:
Entries indexed by reserved MPLS label values 0
through 15 imply LSPs terminating at this LSR and
MUST have mplsXCOutSegmentIfIndex = 0. Note that
situations where LSPs are terminated with incoming
label equal to 0, should have
mplsXCInSegmentIfIndex = 0 as well, but can be
distinguished from LSPs originating at this LSR
because the mplsXCOutSegmentIfIndex = 0. The
mplsXCOutSegmentIfIndex MUST only be set to 0 in
the case of LSPs terminating at this LSR.
An entry can be created by a network administrator
or by an SNMP agent as instructed by an MPLS
signaling protocol."
INDEX {
mplsXCIndex,
mplsXCInSegmentIfIndex,
mplsXCInSegmentLabel,
mplsXCOutSegmentIndex
}
::= { mplsXCTable 1 }
MplsXCEntry ::= SEQUENCE {
mplsXCIndex Unsigned32,
mplsXCInSegmentIfIndex InterfaceIndexOrZero,
mplsXCInSegmentLabel MplsLabel,
mplsXCOutSegmentIndex Unsigned32,
mplsXCLspId MplsLSPID,
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mplsXCLabelStackIndex Unsigned32,
mplsXCIsPersistent TruthValue,
mplsXCOwner MplsOwner ,
mplsXCRowStatus RowStatus,
mplsXCStorageType StorageType,
mplsXCAdminStatus INTEGER,
mplsXCOperStatus INTEGER
}
mplsXCIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Primary index for the conceptual row identifying a
group of cross-connect segments."
::= { mplsXCEntry 1 }
mplsXCInSegmentIfIndex OBJECT-TYPE
SYNTAX InterfaceIndexOrZero
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Interface index of the in-segment for LSPs not
originating at this LSR. Zero (along with
mplsXCInSegmentLabel) otherwise."
::= { mplsXCEntry 2 }
mplsXCInSegmentLabel OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Incoming label."
::= { mplsXCEntry 3 }
mplsXCOutSegmentIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Index of out-segment for LSPs not terminating on
this LSR; zero otherwise."
::= { mplsXCEntry 4 }
mplsXCLspId OBJECT-TYPE
SYNTAX MplsLSPID
MAX-ACCESS read-create
STATUS current
DESCRIPTION
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"This value identifies the label switched path that
this cross-connect entry belongs to. This object
cannot be modified if mplsXCRowStatus is active(1)."
::= { mplsXCEntry 5 }
mplsXCLabelStackIndex OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Primary index into mplsLabelStackTable identifying a
stack of labels to be pushed beneath the top label.
Note that the top label identified by the out-
segment ensures that all the components of a
multipoint-to-point connection have the same
outgoing label. A value of 0 indicates that no
labels are to be stacked beneath the top label. This
object cannot be modified if mplsXCRowStatus is
active(1)."
::= { mplsXCEntry 6 }
mplsXCIsPersistent OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Denotes whether or not this cross-connect entry and
associated in- and out-segments should be restored
automatically after failures. This value MUST be
set to false in cases where this cross-connect entry
was created by a signaling protocol. This object
cannot be modified if mplsXCRowStatus is active(1)."
DEFVAL { false }
::= { mplsXCEntry 7 }
mplsXCOwner OBJECT-TYPE
SYNTAX MplsOwner
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Denotes the entity that created and is responsible
for managing this cross-connect. This object cannot
be modified if mplsXCRowStatus is active(1)."
::= { mplsXCEntry 8 }
mplsXCRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
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"For creating, modifying, and deleting this row."
::= { mplsXCEntry 9 }
mplsXCStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Defines the storage type support provided for this
object by the agent. If this variable is set to
readOnly(5), and the corresponding LFIB entry is
removed, then the agent must remove this row shortly
thereafter."
::= { mplsXCEntry 10 }
mplsXCAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1), -- ready to pass packets
down(2),
testing(3) -- in some test mode
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The desired operational status of this segment."
::= { mplsXCEntry 11 }
mplsXCOperStatus OBJECT-TYPE
SYNTAX INTEGER {
up(1), -- ready to pass packets
down(2),
testing(3), -- in some test mode
unknown(4), -- status cannot be determined
-- for some reason.
dormant(5),
notPresent(6), -- some component is missing
lowerLayerDown(7) -- down due to the state of
-- lower layer interfaces
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The actual operational status of this cross-
connect."
::= { mplsXCEntry 12 }
-- End of mplsXCTable
-- Label stack table.
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mplsMaxLabelStackDepth OBJECT-TYPE
SYNTAX Integer32 (1..2147483647)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The maximum stack depth supported by this LSR."
::= { mplsLsrObjects 10 }
mplsLabelStackIndexNext OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value to be used
for mplsLabelStackIndex when creating entries in the
mplsLabelStackTable. The value 0 indicates that no
unassigned entries are available. To obtain an
mplsLabelStackIndex value for a new entry, the
manager issues a management protocol retrieval
operation to obtain the current value of this
object. After each retrieval operation, the agent
should modify the value to reflect the next
unassigned index. After a manager retrieves a value
the agent will determine through its local policy
when this index value will be made available for
reuse."
::= { mplsLsrObjects 11 }
mplsLabelStackTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLabelStackEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table specifies the label stack to be pushed
onto a packet, beneath the top label. Entries into
this table are referred to from mplsXCTable."
::= { mplsLsrObjects 12 }
mplsLabelStackEntry OBJECT-TYPE
SYNTAX MplsLabelStackEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents one label which is
to be pushed onto an outgoing packet, beneath the
top label. An entry can be created by a network
administrator or by an SNMP agent as instructed by
an MPLS signaling protocol."
INDEX { mplsLabelStackIndex, mplsLabelStackLabelIndex }
::= { mplsLabelStackTable 1 }
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MplsLabelStackEntry ::= SEQUENCE {
mplsLabelStackIndex Unsigned32,
mplsLabelStackLabelIndex Unsigned32,
mplsLabelStackLabel MplsLabel,
mplsLabelStackRowStatus RowStatus,
mplsLabelStackStorageType StorageType
}
mplsLabelStackIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Primary index for this row identifying a stack of
labels to be pushed on an outgoing packet, beneath
the top label."
::= { mplsLabelStackEntry 1 }
mplsLabelStackLabelIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Secondary index for this row identifying one label
of the stack. Note that an entry with a smaller
mplsLabelStackLabelIndex would refer to a label
higher up the label stack and would be popped at a
downstream LSR before a label represented by a
higher mplsLabelStackLabelIndex at a downstream
LSR."
::= { mplsLabelStackEntry 2 }
mplsLabelStackLabel OBJECT-TYPE
SYNTAX MplsLabel
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The label to pushed."
::= { mplsLabelStackEntry 3 }
mplsLabelStackRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"For creating, modifying, and deleting this row."
::= { mplsLabelStackEntry 4 }
mplsLabelStackStorageType OBJECT-TYPE
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SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
" Defines the storage type support provided for this
object by the agent. If this variable is set to
readOnly(5), and the corresponding LFIB entry is
removed, then the agent must remove this row shortly
thereafter."
::= { mplsLabelStackEntry 5 }
-- End of mplsLabelStackTable
-- Traffic Parameter table.
mplsTrafficParamIndexNext OBJECT-TYPE
SYNTAX Unsigned32 (0..4294967295)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value which will
be used for mplsTrafficParamIndex when creating
entries in the mplsTrafficParamTable. The value 0
indicates that no unassigned entries are available.
To obtain the mplsTrafficParamIndex value for a new
entry, the manager issues a management protocol
retrieval operation to obtain the current value of
this object. After each retrieval operation, the
agent should modify the value to reflect the next
unassigned index. After a manager retrieves a value
the agent will determine through its local policy
when this index value will be made available for
reuse."
::= { mplsLsrObjects 13 }
mplsTrafficParamTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsTrafficParamEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table specifies the Traffic Parameter objects
for in and out-segments."
::= { mplsLsrObjects 14 }
mplsTrafficParamEntry OBJECT-TYPE
SYNTAX MplsTrafficParamEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents the TrafficParam
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objects for one or more in or out segments. A
single entry can be pointed to by multiple segments
indicating resource sharing."
INDEX { mplsTrafficParamIndex }
::= { mplsTrafficParamTable 1 }
MplsTrafficParamEntry ::= SEQUENCE {
mplsTrafficParamIndex Unsigned32,
mplsTrafficParamMaxRate MplsBitRate,
mplsTrafficParamMeanRate MplsBitRate,
mplsTrafficParamMaxBurstSize MplsBurstSize,
mplsTrafficParamRowStatus RowStatus,
mplsTrafficParamStorageType StorageType
}
mplsTrafficParamIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Uniquely identifies this row of the table. Note
that zero represents an invalid index."
::= { mplsTrafficParamEntry 1 }
mplsTrafficParamMaxRate OBJECT-TYPE
SYNTAX MplsBitRate
UNITS "kilobits per second"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Maximum rate in kilobits/second."
::= { mplsTrafficParamEntry 2 }
mplsTrafficParamMeanRate OBJECT-TYPE
SYNTAX MplsBitRate
UNITS "kilobits per second"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Mean rate in kilobits/second."
::= { mplsTrafficParamEntry 3 }
mplsTrafficParamMaxBurstSize OBJECT-TYPE
SYNTAX MplsBurstSize
UNITS "bytes"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Maximum burst size in bytes."
::= { mplsTrafficParamEntry 4 }
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mplsTrafficParamRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"For creating, modifying, and deleting this row."
::= { mplsTrafficParamEntry 5 }
mplsTrafficParamStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
" Defines the storage type support provided for this
object by the agent. If this variable is set to
readOnly(5), and the corresponding LFIB entry is
removed, then the agent must remove this row shortly
thereafter."
::= { mplsTrafficParamEntry 6 }
-- End of mplsTrafficParamTable
-- Notification Configuration
mplsXCNotificationsEnable OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-write
STATUS current
DESCRIPTION
"If this object is set to true(1), then it enables
the emission of mplsXCUp and mplsXCDown
notifications; otherwise these notifications are not
emitted."
DEFVAL { false }
::= { mplsLsrObjects 15 }
-- Cross-connect.
mplsXCUp NOTIFICATION-TYPE
OBJECTS {
mplsXCOperStatus, -- start of range
mplsXCOperStatus -- end of range
}
STATUS current
DESCRIPTION
"This notification is generated when the
mplsXCOperStatus object for one or more contiguous
entries in mplsXCTable are about to enter the up(1)
state from some other. The included values of
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mplsXCOperStatus MUST both be set equal to this
other state. The two instances of mplsXCOperStatus
in this notification indicate the range of indexes
that are affected. Note that all the indexes of the
two ends of the range can be derived from the
instance identifiers of these two objects. For
cases where a contiguous range of cross-connects
have transitioned into the up(1) state at roughly
the same time, the device SHOULD issue a single
notification for each range of contiguous indexes in
an effort to minimize the emission of a large number
of notifications. If a notification has to be
issued for just a single cross-connect entry, then
the instance identifier (and values) of the two
mplsXCOperStatus objects MUST be the identical."
::= { mplsLsrNotifications 1 }
mplsXCDown NOTIFICATION-TYPE
OBJECTS {
mplsXCOperStatus, -- start of range
mplsXCOperStatus -- end of range
}
STATUS current
DESCRIPTION
" This notification is generated when the
mplsXCOperStatus object for one or more contiguous
entries in mplsXCTable are about to enter the
down(2) state from some other. The included values
of mplsXCOperStatus MUST both be set equal to this
other state. The two instances of mplsXCOperStatus
in this notification indicate the range of indexes
that are affected. Note that all the indexes of the
two ends of the range can be derived from the
instance identifiers of these two objects. For
cases where a contiguous range of cross-connects
have transitioned into the down(2) state at roughly
the same time, the device SHOULD issue a single
notification for each range of contiguous indexes in
an effort to minimize the emission of a large number
of notifications. If a notification has to be
issued for just a single cross-connect entry, then
the instance identifier (and values) of the two
mplsXCOperStatus objects MUST be the identical."
::= { mplsLsrNotifications 2 }
-- End of notifications.
-- Module compliance.
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mplsLsrGroups
OBJECT IDENTIFIER ::= { mplsLsrConformance 1 }
mplsLsrCompliances
OBJECT IDENTIFIER ::= { mplsLsrConformance 2 }
mplsLsrModuleCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"Compliance statement for agents that support the
MPLS-LSR-MIB."
MODULE -- this module
-- The mandatory groups have to be implemented
-- by all LSRs. However, they may all be supported
-- as read-only objects in the case where manual
-- configuration is unsupported.
MANDATORY-GROUPS {
mplsInterfaceGroup,
mplsInSegmentGroup,
mplsOutSegmentGroup,
mplsXCGroup,
mplsPerfGroup,
mplsSegmentDiscontinuityGroup
}
GROUP mplsHCInSegmentPerfGroup
DESCRIPTION
"This group is mandatory for those in-segment
entries for which the object
mplsInSegmentOutOctets wraps around too
quickly."
GROUP mplsHCOutSegmentPerfGroup
DESCRIPTION
"This group is mandatory for those out-segment
entries for which the object
mplsOutSegmentOctets wraps around too quickly."
GROUP mplsTrafficParamGroup
DESCRIPTION
"This group is mandatory for those LSRs that
support QoS resource reservation."
-- Depending on whether the device implements
-- persistent cross-connects or not one of the
-- following two groups is mandatory.
GROUP mplsXCIsPersistentGroup
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DESCRIPTION
"This group is mandatory for devices which
support persistent cross-connects. The
following constraints apply: mplsXCIsPersistent
must at least be read-only returning true(2)."
GROUP mplsXCIsNotPersistentGroup
DESCRIPTION
"This group is mandatory for devices which
support non-persistent cross-connects. The
following constraints apply: mplsXCIsPersistent
must at least be read-only returning false(1)."
-- mplsInSegmentTable
OBJECT mplsInSegmentXCIndex
DESCRIPTION
"Write access is not required."
OBJECT mplsInSegmentNPop
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required. This object
should be set to 1 if it is read-only."
OBJECT mplsInSegmentAddrFamily
DESCRIPTION
"Write access is not required. A value of
other(0) should be supported because there may
be cases where the agent may not know about or
support any address types."
OBJECT mplsInSegmentStorageType
SYNTAX INTEGER { other(1) }
DESCRIPTION
"Only other(1) needs to be supported."
-- mplsOutSegmentTable
OBJECT mplsOutSegmentIfIndex
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsOutSegmentPushTopLabel
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
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OBJECT mplsOutSegmentTopLabel
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsOutSegmentNextHopIpAddrType
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
MIN-ACCESS read-only
DESCRIPTION
"An implementation is only required to support
ipv4(1) and ipv6(2)."
OBJECT mplsOutSegmentNextHopIpAddr
SYNTAX InetAddress (SIZE(0|4|16))
MIN-ACCESS read-only
DESCRIPTION
"An implementation is only required to support
IPv4 and globally unique IPv6 addresses. Write
access is not required."
OBJECT mplsOutSegmentRowStatus
SYNTAX INTEGER {
active(1),
notInService(2),
createAndGo(4),
destroy(6)
}
MIN-ACCESS read-only
DESCRIPTION
"The notReady(3) and createAndWait(5) states need
not be supported."
OBJECT mplsOutSegmentStorageType
SYNTAX INTEGER { other(1) }
DESCRIPTION
"Only other(1) needs to be supported."
-- mplsXCTable
OBJECT mplsXCLabelStackIndex
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsXCIsPersistent
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsXCAdminStatus
SYNTAX INTEGER { up(1), down(2) }
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MIN-ACCESS read-only
DESCRIPTION
"A value of testing(3) need not be supported."
OBJECT mplsXCOperStatus
SYNTAX INTEGER { up(1), down(2) }
DESCRIPTION
"Only up(1) and down(2) need to be supported."
OBJECT mplsXCRowStatus
SYNTAX INTEGER {
active(1),
notInService(2),
createAndGo(4),
destroy(6)
}
MIN-ACCESS read-only
DESCRIPTION
"The notReady(3) and createAndWait(5) states need
not be supported."
OBJECT mplsXCStorageType
SYNTAX INTEGER { other(1) }
DESCRIPTION
"Only other(1) needs to be supported."
::= { mplsLsrCompliances 1 }
-- Units of conformance.
mplsInterfaceGroup OBJECT-GROUP
OBJECTS {
mplsInterfaceLabelMinIn,
mplsInterfaceLabelMaxIn,
mplsInterfaceLabelMinOut,
mplsInterfaceLabelMaxOut,
mplsInterfaceTotalBandwidth,
mplsInterfaceAvailableBandwidth,
mplsInterfaceLabelParticipationType
}
STATUS current
DESCRIPTION
"Collection of objects needed for MPLS interface
configuration and performance information."
::= { mplsLsrGroups 1 }
mplsInSegmentGroup OBJECT-GROUP
OBJECTS {
mplsInSegmentNPop,
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mplsInSegmentAddrFamily,
mplsInSegmentXCIndex,
mplsInSegmentOctets,
mplsInSegmentDiscards,
mplsInSegmentOwner,
mplsInSegmentRowStatus,
mplsInSegmentStorageType,
mplsInSegmentTrafficParamPtr
}
STATUS current
DESCRIPTION
"Collection of objects needed to implement an in-
segment."
::= { mplsLsrGroups 2 }
mplsOutSegmentGroup OBJECT-GROUP
OBJECTS {
mplsOutSegmentIndexNext,
mplsOutSegmentIfIndex,
mplsOutSegmentPushTopLabel,
mplsOutSegmentTopLabel,
mplsOutSegmentNextHopIpAddrType,
mplsOutSegmentNextHopIpAddr,
mplsOutSegmentXCIndex,
mplsOutSegmentOwner,
mplsOutSegmentOctets,
mplsOutSegmentDiscards,
mplsOutSegmentErrors,
mplsOutSegmentRowStatus,
mplsOutSegmentStorageType,
mplsOutSegmentTrafficParamPtr
}
STATUS current
DESCRIPTION
"Collection of objects needed to implement an out-
segment."
::= { mplsLsrGroups 3 }
mplsXCGroup OBJECT-GROUP
OBJECTS {
mplsXCIndexNext,
mplsXCLabelStackIndex,
mplsXCOwner,
mplsXCAdminStatus,
mplsXCOperStatus,
mplsXCRowStatus,
mplsXCNotificationsEnable,
mplsXCStorageType
}
STATUS current
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DESCRIPTION
"Collection of objects needed to implement a
cross-connect entry."
::= { mplsLsrGroups 4 }
mplsXCOptionalGroup OBJECT-GROUP
OBJECTS { mplsXCLspId }
STATUS current
DESCRIPTION
"Collection of optional objects for implementing
a cross-connect entry."
::= { mplsLsrGroups 5 }
mplsPerfGroup OBJECT-GROUP
OBJECTS {
mplsInSegmentOctets,
mplsInSegmentPackets,
mplsInSegmentErrors,
mplsInSegmentDiscards,
mplsOutSegmentOctets,
mplsOutSegmentPackets,
mplsOutSegmentDiscards,
mplsInterfaceInLabelsUsed,
mplsInterfaceLabelLookupFailures ,
mplsInterfaceOutFragments,
mplsInterfaceOutLabelsUsed
}
STATUS current
DESCRIPTION
"Collection of objects providing performance
information
about an LSR."
::= { mplsLsrGroups 6 }
mplsHCInSegmentPerfGroup OBJECT-GROUP
OBJECTS { mplsInSegmentHCOctets }
STATUS current
DESCRIPTION
"Object(s) providing performance information
specific to out-segments for which the object
mplsInterfaceInOctets wraps around too quickly."
::= { mplsLsrGroups 7 }
mplsHCOutSegmentPerfGroup OBJECT-GROUP
OBJECTS { mplsOutSegmentHCOctets }
STATUS current
DESCRIPTION
"Object(s) providing performance information
specific to out-segments for which the object
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mplsInterfaceOutOctets wraps around too
quickly."
::= { mplsLsrGroups 8 }
mplsTrafficParamGroup OBJECT-GROUP
OBJECTS {
mplsTrafficParamIndexNext,
mplsTrafficParamMaxRate,
mplsTrafficParamMeanRate,
mplsTrafficParamMaxBurstSize,
mplsTrafficParamRowStatus,
mplsTrafficParamStorageType
}
STATUS current
DESCRIPTION
"Object(s) required for supporting QoS resource
reservation."
::= { mplsLsrGroups 9 }
mplsXCIsPersistentGroup OBJECT-GROUP
OBJECTS { mplsXCIsPersistent }
STATUS current
DESCRIPTION
"Objects needed to support persistent cross-
connects."
::= { mplsLsrGroups 10 }
mplsXCIsNotPersistentGroup OBJECT-GROUP
OBJECTS { mplsXCIsPersistent }
STATUS current
DESCRIPTION
"Objects needed to support non-persistent cross-
connects."
::= { mplsLsrGroups 11 }
mplsLabelStackGroup OBJECT-GROUP
OBJECTS {
mplsLabelStackLabel,
mplsLabelStackRowStatus,
mplsLabelStackStorageType,
mplsMaxLabelStackDepth,
mplsLabelStackIndexNext
}
STATUS current
DESCRIPTION
"Objects needed to support label stacking which
is an optional feature for an LSR."
::= { mplsLsrGroups 12 }
mplsSegmentDiscontinuityGroup OBJECT-GROUP
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OBJECTS {
mplsInSegmentPerfDiscontinuityTime,
mplsOutSegmentPerfDiscontinuityTime
}
STATUS current
DESCRIPTION
" A collection of objects providing information
specific to segment discontinuities.."
::= { mplsLsrGroups 13 }
mplsLsrNotificationGroup NOTIFICATION-GROUP
NOTIFICATIONS {
mplsXCUp,
mplsXCDown
}
STATUS current
DESCRIPTION
"Set of notifications implemented in this module.
None is mandatory."
::= { mplsLsrGroups 14 }
END
12. Security Considerations
It is clear that this MIB is potentially useful for monitoring of
MPLS LSRs. This MIB can also be used for configuration of certain
objects, and anything that can be configured can be incorrectly
configured, with potentially disastrous results.
At this writing, no security holes have been identified beyond
those that SNMP Security [RFC2571] is itself intended to address.
These relate to primarily controlled access to sensitive
information and the ability to configure a device - or which might
result from operator error, which is beyond the scope of any
security architecture.
There are a number of management objects defined in this MIB which
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. The use of SNMP Version 3 is recommended
over prior versions, for configuration control, as its security
model is improved.
SNMPv1 or SNMPv2 are by themselves not a secure environment. Even
if the network itself is secure (for example by using IPSec
[RFC2401]), there is no control as to who on the secure network is
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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
[RFC2574] and the View-based Access Control [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.
There are a number of managed objects in this MIB that may contain
information that may be sensitive from a business perspective, in
that they represent a customer's interface to the MPLS network.
Allowing uncontrolled access to these objects could result in
malicious and unwanted disruptions of network traffic or incorrect
configurations for these customers. There are no objects that are
particularly sensitive in their own right, such as passwords or
monetary amounts.
13. Acknowledgments
We wish to thank Ron Bonica, Adrian Farrel, Eric Gray, Tim
Mancour, Keith McCloghrie, Bala Rajagopalan, Dan Tappan, Vasanthi
Thirumalai, Joseph Benoit and Joan Cucchiara.
14. References
[Assigned] Reynolds, J., and J. Postel, "Assigned Numbers",
RFC 1700, October 1994. See also:
http://www.isi.edu/in-notes/iana/assignments/smi-
numbers
[IANAFamily] Internet Assigned Numbers Authority (IANA), ADDRESS
FAMILY NUMBERS, (http://www.isi.edu/in-
notes/iana/assignements/address-family-numbers),
for MIB see:
ftp://ftp.isi.edu/mib/iana.mib/ianaaddressfamilynum
bers.mib
[TCMIB] Nadeau, T., Cucchiara, J., Srinivasan, C,
Viswanathan, A. and H. Sjostrand, "Definition of
Textual Conventions and OBJECT-IDENTITIES for Multi-
Protocol Label Switching (MPLS) Management",
Internet Draft <draft-ietf-mpls-tc-mib-03.txt>,
January 2002.
[RFC1155] Rose, M., and K. McCloghrie, "Structure and
IETF MPLS Working Group Expires April 2003 [Page 50]
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Identification of Management Information for TCP/IP-
based Internets", RFC 1155, May 1990.
[RFC1157] Case, J., Fedor, M., Schoffstall, M., and J. Davin,
"Simple Network Management Protocol", RFC 1157, May
1990.
[RFC1215] M. Rose, "A Convention for Defining Traps for use
with the SNMP", RFC 1215, March 1991.
[RFC1901] Case, J., McCloghrie, K., Rose, M., and S.
Waldbusser, "Introduction to Community-based
SNMPv2", RFC 1901, January 1996.
[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.
[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.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2863] McCloghrie, K., and F. Kastenholtz, "The Interfaces
Group MIB using SMIv2", RFC 2863, June 2000
[RFC2401] Kent, S., and Atkinson, R., "Security Architecture
for the Internet Protocol", RFC 2401, November
1998.
[RFC2515] Tesink, K., "Definitions of Managed Objects for ATM
Management", RFC 2515, Feb. 1999
[RFC2570] Case, J., Mundy, R., Partain, D., and B. Stewart,
"Introduction to Version 3 of the Internet-standard
Network Management Framework", RFC 2570, April
1999.
[RFC2571] Harrington, D., Presuhn, R., and B. Wijnen, "An
Architecture for Describing SNMP Management
Frameworks", RFC 2571, April 1999.
[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.
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[RFC2573] Levi, D., Meyer, P., and B. Stewart, "SNMPv3
Applications", RFC 2573, 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.
[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.
[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.
[RFC2702] Awduche, D., Malcolm, J., Agogbua, J., O'Dell, M.,
and J. McManus, "Requirements for Traffic
Engineering Over MPLS", RFC 2702, September 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.
[RFC3031] Rosen, E., Viswanathan, A., and R. Callon,
"Multiprotocol Label Switching Architecture", RFC
3031, January 2001.
[RFC3032] Rosen, E., Rekhter, Y., Tappan, D., Farinacci, D.,
Federokow, G., Li, T., and A. Conta, "MPLS Label
Stack Encoding", RFC 3032, January 2001.
15. Authors' Addresses
Cheenu Srinivasan
Parama Networks, Inc.
1030 Broad Street
Shrewsbury, NJ 07702
Phone: +1-732-544-9120 x731
Email: cheenu@paramanet.com
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Arun Viswanathan
Force10 Networks, Inc.
1440 McCarthy Blvd
Milpitas, CA 95035
Phone: +1-408-571-3516
Email: arun@force10networks.com
Thomas D. Nadeau
Cisco Systems, Inc.
250 Apollo Drive
Chelmsford, MA 01824
Phone: +1-978-244-3051
Email: tnadeau@cisco.com
16. Full Copyright Statement
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IETF MPLS Working Group Expires April 2003 [Page 53]
