RFC 3815 - Definitions of Managed Objects for the Multiprotocol Label Switching (MPLS), Label Distribution Protocol (LDP)
(Formats: TXT)
Network Working Group J. Cucchiara
Request for Comments: 3815 Marconi Communications, Inc.
Category: Standards Track H. Sjostrand
ipUnplugged
J. Luciani
Marconi Communications, Inc.
June 2004
|
Definitions of Managed Objects for the
Multiprotocol Label Switching (MPLS),
Label Distribution Protocol (LDP)
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2004).
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 the Multiprotocol
Label Switching, Label Distribution Protocol (LDP).
Table of Contents
1. Introduction. . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Internet-Standard Management Framework. . . . . . . . . . 3
3. Structure of the MIB Modules. . . . . . . . . . . . . . . . . 3
3.1. Overview. . . . . . . . . . . . . . . . . . . . . . . . 3
3.2. Future Considerations . . . . . . . . . . . . . . . . . 4
3.3. Interface Indexing. . . . . . . . . . . . . . . . . . . 4
3.4. Differences from the LDP Specification. . . . . . . . . 4
3.5. The MPLS-LDP-STD-MIB Module . . . . . . . . . . . . . . 5
3.5.1. LDP Scalar Objects. . . . . . . . . . . . . . . 5
3.5.2. The LDP Entity Table. . . . . . . . . . . . . . 6
3.5.2.1. Changing Values After Session
Establishment . . . . . . . . . . . . 6
3.5.3. The LDP Entity Statistics Table . . . . . . . . 7
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RFC 3815 MPLS LDP MIB June 2004
3.5.4. The LDP Peer Table. . . . . . . . . . . . . . . 7
3.5.5. The LDP Session Table . . . . . . . . . . . . . 8
3.5.6. The LDP Session Statistics Table. . . . . . . . 8
3.5.7. The LDP Hello Adjacency Table . . . . . . . . . 8
3.5.8. The LDP LSP Tables. . . . . . . . . . . . . . . 8
3.5.9. The FEC Tables. . . . . . . . . . . . . . . . . 9
3.5.10. The LDP Session Peer Address Table. . . . . . . 9
3.6. LDP Notifications . . . . . . . . . . . . . . . . . . . 9
3.7. LDP Notification Frequency. . . . . . . . . . . . . . . 10
4. MPLS Label Distribution Protocol MIB Definitions. . . . . . . 10
4.1. The MPLS-LDP-ATM-STD-MIB Module . . . . . . . . . . . . 60
4.1.1. The LDP Entity ATM Table. . . . . . . . . . . . 61
4.1.2. The LDP Entity ATM Label Range Table. . . . . . 61
4.1.3. The LDP ATM Session Table . . . . . . . . . . . 61
4.2. The MPLS-LDP-FRAME-RELAY-STD-MIB Module . . . . . . . . 77
4.2.1. The LDP Entity Frame Relay Table. . . . . . . . 77
4.2.2. The LDP Entity Frame Relay Label Range Table. . 77
4.2.3. The LDP Frame Relay Session Table . . . . . . . 77
4.3. The MPLS-LDP-GENERIC-STD-MIB Module . . . . . . . . . . 91
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 98
6. References. . . . . . . . . . . . . . . . . . . . . . . . . . 98
6.1. Normative References. . . . . . . . . . . . . . . . . . 98
6.2. Informative References. . . . . . . . . . . . . . . . .100
7. Security Considerations . . . . . . . . . . . . . . . . . . .100
7.1. Security Considerations for MPLS-LDP-STD-MIB. . . . . .100
7.2. Security Considerations for MPLS-LDP-ATM-STD-MIB. . . .101
7.3. Security Considerations for
MPLS-LDP-FRAME-RELAY-STD-MIB. . . . . . . . . . . . . .102
7.4. Security Considerations for MPLS-LDP-GENERIC-STD-MIB. .103
7.5. Additional Security Considerations. . . . . . . . . . .103
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . .104
8.1. IANA Considerations for MPLS-LDP-STD-MIB. . . . . . . .104
8.2. IANA Considerations for MPLS-LDP-ATM-STD-MIB. . . . . .104
8.3. IANA Considerations for MPLS-LDP-FRAME-RELAY-STD-MIB. .104
8.4. IANA Considerations for MPLS-LDP-GENERIC-STD-MIB. . . .104
9. Authors' Addresses. . . . . . . . . . . . . . . . . . . . . .105
10. Full Copyright Statement. . . . . . . . . . . . . . . . . . .106
1. Introduction
This document defines 4 MIB Modules which together support the
configuration and monitoring of the Label Distribution Protocol
(LDP). The Label Distribution Protocol (LDP) [RFC3036] is one type
of Multiprotocol Label Switching (MPLS) protocols described in
[RFC3031] and [RFC3032]. Utilizing all 4 MIB Modules allows an
operator to configure LDP sessions using 3 different Layer 2 media.
The Layer 2 media supported by the MIB Modules are Ethernet, ATM and
Frame Relay as described in [RFC3036], [RFC3034] and [RFC3035].
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RFC 3815 MPLS LDP MIB June 2004
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 [RFC2119].
For an introduction to the concepts of MPLS, see [RFC3031]. For
further on LDP refer to [RFC3037] and [RFC3215].
2. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
[RFC2580].
3. Structure of the MIB Modules
This section describes the structure of the LDP MIB Modules.
3.1. Overview
There are 4 MIB Modules in this document. These MIB Modules are the
MPLS-LDP-STD-MIB, the MPLS-LDP-GENERIC-STD-MIB, the MPLS-LDP-ATM-STD-
MIB and the MPLS-LDP-FRAME-RELAY-STD-MIB. The MPLS-LDP-STD-MIB
defines objects which are common to all LDP implementations. The
MPLS-LDP-GENERIC-STD-MIB defines Layer 2 Per Platform Label Space
objects for use with the MPLS-LDP-STD-MIB. The MPLS-LDP-ATM-STD-MIB
defines Layer 2 Asynchronous Transfer Mode (ATM) objects for use with
the MPLS-LDP-STD-MIB. The MPLS-LDP-FRAME-RELAY-STD-MIB defines Layer
2 FRAME-RELAY objects for use with the MPLS-LDP-STD-MIB.
The MPLS-LDP-STD-MIB Module MUST be implemented and at least one of
the Layer 2 MIB Modules MUST be implemented by an Agent developer on
an Label Switching Router (LSR) or Label Edge Router (LER). As an
example, if a Label Switching Router (LSR) or Label Edge Router (LER)
implementation intends to support LDP utilizing a Layer 2 of
Ethernet, then the MPLS-LDP-STD-MIB and the MPLS-LDP-GENERIC-STD-MIB
Modules MUST implemented. If an LSR/LER implementation intends to
support LDP utilizing a Layer 2 of ATM, then the MPLS-LDP-STD-MIB
Module and the MPLS-LDP-ATM-MIB Module MUST be implemented. If an
LSR/LER implementation intends to support LDP utilizing a Layer 2 of
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FRAME-RELAY, then the MPLS-LDP-STD-MIB Module and the MPLS-LDP-FRAME-
RELAY-STD-MIB Module MUST be implemented. An LDP implementation that
utilizes all three Layer 2 media (Ethernet, Frame-Relay, ATM) MUST
support all 4 MIB Modules. Each of the Modules will be discussed in
detail in the following sections.
There are 2 compliance statements for each MIB Module. One
compliance statement is for full compliance which allows both
configuration and monitoring via SNMP. The other compliance
statement is for read-only compliance which allows only monitoring
via SNMP.
3.2. Future Considerations
The LDP Specification [RFC3036] does not specify the use of VPNs or
multicast for LDP, and thus, objects related to these areas have not
been included.
[RFC2684] does not describe VP merge capability and so this feature
has not been included.
These areas need to be specified in the LDP Specification or other
specifications prior to being added in this or any other MIB
document.
3.3. Interface Indexing
Interface Indexes as specified in [RFC2863] are used in these MIB
Modules. The descriptions of the ifIndexes denote which ifIndex is
being used. The use of ifIndex is for actual existing connections.
3.4. Differences from the LDP Specification
Currently, there are 3 differences between this specification and the
LDP Specification. As described in the Introduction, this document
is almost entirely based on the LDP specification. The differences
are documented here.
The first difference is that the LDP Entity Table contains some
DEFVAL clauses which are not specified explicitly in the LDP
Specification. These values, although not documented in the LDP
Specification, are widely used by existing LDP MIB implementations
and thus, have been adopted within this MPLS-LDP-STD-MIB module.
Please note, they can certainly be changed during row creation or a
subsequent SET request.
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A second difference is the mplsLdpEntityGenericLRTable in the MPLS-
LDP-GENERIC-STD-MIB Module. This table, although provided as a way
to reserve a range of generic labels, does not exist in the LDP
Specification. It was added to the MIB due to a request from the
working group and because this table was considered useful for
reserving a range of generic labels.
The third difference is documented by the TEXTUAL-CONVENTION,
MplsAtmVcIdentifier which is in the MPLS-TC-STD-MIB [RFC3811]. This
TC was added to restrict vci values to be greater than 31 as
described in RFC 3035 [RFC3035].
3.5. The MPLS-LDP-STD-MIB Module
This MIB Module contains objects which are common to all LDP
implementations. This MIB Module MUST always be implemented along
with one or more of the Layer 2 MIB Modules. This MIB Module IMPORTS
IndexInteger and IndexIntegerNextFree TEXTUAL-CONVENTIONs from
[RFC3289], and IMPORTS InetAddressPrefixLength, InetAddressType,
InetAddressInetPortNumber TEXTUAL-CONVENTIONs from [RFC3291].
The mplsLdpEntityTable table allows the Label Edge Router (LER) or
the Label Switching Router (LSR) to initiate and/or receive requests
to establish LDP sessions. As the LDP protocol distributes labels
and establishes sessions with Peers most of the tables in this module
are populated by the agent as instructed by the LDP protocol. The
exception is the mplsFecTable and the mplsLdpLspFecTable which can be
configured by the operator to specify Forwarding Equivalence Class
information for an LSP.
Some scalars and each table in the MPLS-LDP-STD-MIB Module are
described in the following subsections.
3.5.1. LDP Scalar Objects
There are several scalar objects in the LDP MIB module. The
mplsLdpLsrId is a read-only scalar object which reports Label
Switching Router's (LSR's) Identifier. This MUST be a globally
unique value, such as the 32-bit router ID assigned to the LSR.
The mplsLdpLsrLoopDetectionCapable scalar object denotes whether the
LSR is capable of supporting loop detection and if so, which form of
loop detection.
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There are two LastChange scalar objects, mplsLdpEntityLastChange and
mplsLdpPeerLastChange. These objects give an indication of there was
a change in the number of entries in the table, or if any of the
values in the respective tables changed. Please see the object's
description for more details.
The mplsLdpEntityIndexNext scalar object is described in the next
section.
3.5.2. The LDP Entity Table
The MPLS-LDP-STD-MIB provides objects to configure/set-up potential
LDP sessions on a specific LSR/LER. The mplsLdpEntityTable is used
to configure information which is used by the LDP protocol to setup
potential LDP Sessions.
Each entry/row in this table represents a single LDP Entity. There
is no maximum number of LDP Entities specified. However, there is an
mplsLdpEntityIndexNext object which should be retrieved by the
command generator prior to creating an LDP Entity. If the
mplsLdpEntityIndexNext object is zero, this indicates that the
LSR/LER is not able to create another LDP Entity at that time.
3.5.2.1. Changing Values After Session Establishment
One way to manually modify a session's parameters is by using SNMP to
change the MIB objects related to that session. Please note, special
care should be taken if MIB objects which are used in the MPLS LDP
Session Initialization need to be modified. If the modification of
any of these MIB variables takes place anytime after the start of
session intialization, then the entire session must be halted. Any
information learned by that session must be discarded. The objects
should then be modified, and session initialization started.
Assuming that the configuration was done correctly, then a new
session will be created.
For example, assume that an operator wishes to change the
configuration of a Label Range which is used by a Session that has
already been established. The operator should change the
mplsLdpEntityAdminStatus to "disable(2)". Setting the
mplsLdpEntityAdminStatus to "disable(2)" will cause the session to be
torn down (i.e., this will signal to LDP that it should send out tear
down messages for that session). Also, all information related to
that session should be removed from this MIB by the Agent. This
includes Peer information (i.e., relevant row in the mplsPeerTable)
and Session statistics (i.e., relevant row in the
mplsLdpSessionTable). Also, if the MPLS-LSR-STD-MIB module [RFC3813]
is implemented and the optional Mapping Table objects are
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implemented, then all information related to the LSPs in this session
should be removed from these MIB modules. [For more information
please see the section on "The Mapping Tables".] At this point, the
operator could modify the Label Range. Lastly, the operator should
set the mplsLdpEntityAdminStatus to "enable(1)". At this point
session initialization should occur. The LDP Entity goes through the
Session Initialization in order to communicate the new Label Ranges
to the Peer and establish new LSPs.
3.5.3. The LDP Entity Statistics Table
The mplsLpdEntityStatsTable is a read-only table which contains
statistical information related to failed attempts to establish
sessions. Each row in this table AUGMENTS an mplsLdpEntityEntry.
This table could be used to give insight into how to reconfigure
values so that a session could be successfully established. For
example, if the mplsLdpEntityStatsSessionRejectedLRErrors Counter
object was increasing, then this would indicate that the Label Range
(LR) may need to be adjusted.
3.5.4. The LDP Peer Table
The mplsLdpPeerTable is a read-only table which contains information
about LDP Peers known to LDP Entities. In other words, the Peer
information is learned by LDP through initialization or discovery.
This table should be populated by the agent as directed by the LDP
protocol.
A row in this table is related to one or more rows in the Hello
Adjacency Table and related to a single row in the Session Table.
The values in the Peer table are specific to a Peer and may or may
not be the same values used in the session. The reason is that the
Peer and Entity negotiate certain values. The Entity's values are
configured in the mplsLdpEntityTable and the Peer's values are
learned (and placed into the mplsLdpPeerTable). The
mplsLdpSessionTable shows the values used in establishing the
session.
One example, of when the Peer's values and the Session's values may
differ is with the Peer's Path Limit information. The Peer's Path
Limit information is learned from the session initialization phase.
The actual value for the Path Vector Limit is the Peer's value and
may not be the same value that appears in the session. There could
be a mismatch in this value between the Entity and the Peer. In the
event of a mismatch, then the session will use the Path Limit set by
the Entity (and not the Peer).
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RFC 3815 MPLS LDP MIB June 2004
The Peer Table information was placed in a separate table from the
Session information to allow for a more comprehensive and coherent
MIB model.
3.5.5. The LDP Session Table
The mplsLdpSessionTable is a read-only table. Each entry in this
table represents a single session between an LDP Entity and a Peer.
The mplsLdpSessionEntry AUGMENTS the mplsLdpPeerEntry.
The information in this table is learned during session
establishment. NOTE: rows in this table will appear during session
intialization.
3.5.6. The LDP Session Statistics Table
The mplsLdpSessionStatsTable is a read-only table which contains
statistical information on sessions. This table AUGMENTS the
mplsLdpPeerTable.
3.5.7. The LDP Hello Adjacency Table
This is a table of all adjacencies between all LDP Entities and all
LDP Peers. A Session may have one or more adjacencies. A session
should not have zero adjacencies, because this indicates that the
session has lost contact with the Peer. A session which has zero
Hello Adjacencies should be removed.
3.5.8. The LDP LSP Tables
The Label Information Base (LIB) contains information about labels
learned by the LSR. The LIB for LDP, CR-LDP and MPLS-RSVP (i.e., all
currently defined MPLS protocols) is represented in the LSR MIB
[RFC3813]. The LIB is represented by the LSR MIB's mplsXCTable (mpls
Cross Connect Table), mplsInSegmentTable (mpls In Segment Table) and
the mplsOutSegmentTable (mpls Out Segment Table). The mplsXCTable
models the cross-connection of the incoming label with a specific
outgoing label. The mplsInSegmentTable stores the incoming label's
information, and the mplsOutSegmentTable stores the outgoing label's
information.
The LDP Session that created the LSP and the LSP's (incoming label,
outgoing label) pair along with other information is contained in the
MPLS-LSR-STD-MIB module's mplsXCTable, the mplsInSegmentTable and the
mplsOutSegmentTable.
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RFC 3815 MPLS LDP MIB June 2004
In order to utilize the MPLS-LSR-STD-MIB module's mplsXCTable,
mplsInSegmentTable and mplsOutSegmentTable for LDP LSPs, there needs
to be a mechanism to associate LDP sessions with LDP LSPs created as
a result of those LDP sessions. The mplsInSegmentLdpLspTable and
mplsOutSegmentLdpLspTable in this MIB contain information to find the
LDP LSP entries in the mplsInSegmentTable, mplsOutSegmentTable and
the mplsXCTable.
These two tables, the mplsInSegmentLdpLspTable and
mplsOutSegmentLdpLspTable, have been made optional in the conformance
section of the MIB. They only need to be supported if the LSR MIBs
mplsInSegmentTable, mplsOutSegmentTable and mplsXCTable are
implemented.
As discussed in the section, "Changing Values after Session
Establishment", if a session is torn down, then all the information
related to this session, must be removed from the both LDP MIB and,
if implemented, from the LSR MIB.
3.5.9. The FEC Tables
The mplsLdpFecTable is a table which contains FEC (Forwarding
Equivalence Class) information. Each entry/row represents a single
FEC Element. There is also an LDP LSP FEC Table, mplsLdpLspFecTable,
which associates FECs with the LSPs.
3.5.10. The LDP Session Peer Address Table
The mplsLdpSessionPeerAddrTable is a table which extends the
mplsLdpSessionTable. This table is a read-only table which stores
Addresses learned after session initialization via Address Message
advertisement.
3.6. LDP Notifications
Currently, there are several notifications which are specific for
LDP. These are described in this section. There are no objects
which enable or disable notifications from being generated. RFC 3413
[RFC3413] contains MIB modules which can be implemented that will
enable or disable these notifications from being generated.
The mplsLdpInitSessionThresholdExceeded notification indicates to the
operator that there may be a misconfigured mplsLdpEntityEntry because
the session associated with this Entity is not being established, and
the Entity keeps trying to establish the session. A side effect of
this situation is that a row in the mplsLdpSessionTable may not be
reaching the operational state as indicated by the
mplsLdpSessionState object. If the value of
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mplsLdpEntityInitSessionThreshold is 0 (zero) then this is equal to
specifying the value of infinity for the threshold, and the
mplsLdpInitSessionThresholdExceeded notification will never be sent.
The mplsLdpPathVectorLimitMismatch notification is generated when
there is a mismatch in the Path Vector Limits between the Entity and
Peer during session initialization. The session uses the value which
is configured as the Entity's Path Vector Limit. However, a
notification should be generated to indicate that a mismatch
occurred. For further details, please see Section 3.5.3 of the LDP
Specification [RFC3036].
The mplsLdpSessionUp and mplsLdpSessionDown notifications are
generated when there is an appropriate change in the
mplsLdpSessionState object, e.g., when sessions change state (Up to
Down for the mplsLdpSessionDown notification, or Down to Up for the
mplsLdpSessionUp notification). There was discussion about combining
these two notifications into a single notification, however, some NMS
applications can utilize two different notifications, rather than
having to parse the varbind list of a single notification. For
example, the SessionDown is matched to a SessionUp notification more
easily by some NMS applications, than having to parse a Varbind list
in a SessionChange type of notification.
3.7. LDP Notification Frequency
LDP Notifications are expected to be few in number when LDP is
ubiquitously deployed in a relatively stable network. A notification
receiver, e.g., an NMS, that receives these notifications should not
be overwhelmed by the frequency of LDP notifications. If this
assertion proves to be inaccurate, then a throttling object to
throttle these notifications may be added to future versions of the
MPLS-LDP-STD-MIB.
4. MPLS Label Distribution Protocol MIB Definitions
MPLS-LDP-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE,
Integer32, Counter32, Unsigned32
FROM SNMPv2-SMI -- [RFC2578]
MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
FROM SNMPv2-CONF -- [RFC2580]
RowStatus, TimeInterval, TruthValue,
TimeStamp, StorageType
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RFC 3815 MPLS LDP MIB June 2004
FROM SNMPv2-TC -- [RFC2579]
InetAddressPrefixLength,
InetAddressType,
InetAddress,
InetPortNumber
FROM INET-ADDRESS-MIB -- [RFC3291]
IndexInteger,
IndexIntegerNextFree
FROM DIFFSERV-MIB -- [RFC3289]
mplsStdMIB,
MplsLabelDistributionMethod,
MplsLdpIdentifier,
MplsLdpLabelType,
MplsLspType,
MplsLsrIdentifier,
MplsRetentionMode
FROM MPLS-TC-STD-MIB -- [RFC3811]
MplsIndexType
FROM MPLS-LSR-STD-MIB; -- [RFC3813]
mplsLdpStdMIB MODULE-IDENTITY
LAST-UPDATED "200406030000Z" -- June 3, 2004
ORGANIZATION "Multiprotocol Label Switching (mpls)
Working Group"
CONTACT-INFO
"Joan Cucchiara (jcucchiara@mindspring.com)
Marconi Communications, Inc.
Hans Sjostrand (hans@ipunplugged.com)
ipUnplugged
James V. Luciani (james_luciani@mindspring.com)
Marconi Communications, Inc.
Working Group Chairs:
George Swallow, email: swallow@cisco.com
Loa Andersson, email: loa@pi.se
MPLS Working Group, email: mpls@uu.net"
DESCRIPTION
"Copyright (C) The Internet Society (2004). The
initial version of this MIB module was published
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RFC 3815 MPLS LDP MIB June 2004
in RFC 3815. For full legal notices see the RFC
itself or see:
http://www.ietf.org/copyrights/ianamib.html
This MIB contains managed object definitions for the
'Multiprotocol Label Switching, Label Distribution
Protocol, LDP' document."
REVISION "200406030000Z" -- June 3, 2004
DESCRIPTION
"Initial version published as part of RFC 3815."
::= { mplsStdMIB 4 }
--****************************************************************
mplsLdpNotifications OBJECT IDENTIFIER ::= { mplsLdpStdMIB 0 }
mplsLdpObjects OBJECT IDENTIFIER ::= { mplsLdpStdMIB 1 }
mplsLdpConformance OBJECT IDENTIFIER ::= { mplsLdpStdMIB 2 }
--****************************************************************
-- MPLS LDP Objects
--****************************************************************
mplsLdpLsrObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 1 }
mplsLdpEntityObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 2 }
--
-- The MPLS Label Distribution Protocol's
-- Label Switching Router Objects
--
mplsLdpLsrId OBJECT-TYPE
SYNTAX MplsLsrIdentifier
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Label Switching Router's Identifier."
::= { mplsLdpLsrObjects 1 }
mplsLdpLsrLoopDetectionCapable OBJECT-TYPE
SYNTAX INTEGER {
none(1),
other(2),
hopCount(3),
pathVector(4),
hopCountAndPathVector(5)
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RFC 3815 MPLS LDP MIB June 2004
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A indication of whether this
Label Switching Router supports
loop detection.
none(1) -- Loop Detection is not supported
on this LSR.
other(2) -- Loop Detection is supported but
by a method other than those
listed below.
hopCount(3) -- Loop Detection is supported by
Hop Count only.
pathVector(4) -- Loop Detection is supported by
Path Vector only.
hopCountAndPathVector(5) -- Loop Detection is
supported by both Hop Count
And Path Vector.
Since Loop Detection is determined during
Session Initialization, an individual session
may not be running with loop detection. This
object simply gives an indication of whether or not the
LSR has the ability to support Loop Detection and
which types."
::= { mplsLdpLsrObjects 2 }
--
-- The MPLS Label Distribution Protocol Entity Objects
--
mplsLdpEntityLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time of the most
recent addition or deletion of an entry
to/from the mplsLdpEntityTable/mplsLdpEntityStatsTable, or
the most recent change in value of any objects in the
mplsLdpEntityTable.
Cucchiara, et al. Standards Track [Page 13]
RFC 3815 MPLS LDP MIB June 2004
If no such changes have occurred since the last
re-initialization of the local management subsystem,
then this object contains a zero value."
::= { mplsLdpEntityObjects 1 }
mplsLdpEntityIndexNext OBJECT-TYPE
SYNTAX IndexIntegerNextFree
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value to
be used for mplsLdpEntityIndex when creating
entries in the mplsLdpEntityTable. The value
0 indicates that no unassigned entries are
available."
::= { mplsLdpEntityObjects 2 }
mplsLdpEntityTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpEntityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains information about the
MPLS Label Distribution Protocol Entities which
exist on this Label Switching Router (LSR)
or Label Edge Router (LER)."
::= { mplsLdpEntityObjects 3 }
mplsLdpEntityEntry OBJECT-TYPE
SYNTAX MplsLdpEntityEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents an LDP entity.
An entry can be created by a network administrator
or by an SNMP agent as instructed by LDP."
INDEX { mplsLdpEntityLdpId, mplsLdpEntityIndex }
::= { mplsLdpEntityTable 1 }
MplsLdpEntityEntry ::= SEQUENCE {
mplsLdpEntityLdpId MplsLdpIdentifier,
mplsLdpEntityIndex IndexInteger,
mplsLdpEntityProtocolVersion Unsigned32,
mplsLdpEntityAdminStatus INTEGER,
mplsLdpEntityOperStatus INTEGER,
mplsLdpEntityTcpPort InetPortNumber,
mplsLdpEntityUdpDscPort InetPortNumber,
Cucchiara, et al. Standards Track [Page 14]
RFC 3815 MPLS LDP MIB June 2004
mplsLdpEntityMaxPduLength Unsigned32,
mplsLdpEntityKeepAliveHoldTimer Unsigned32,
mplsLdpEntityHelloHoldTimer Unsigned32,
mplsLdpEntityInitSessionThreshold Integer32,
mplsLdpEntityLabelDistMethod MplsLabelDistributionMethod,
mplsLdpEntityLabelRetentionMode MplsRetentionMode,
mplsLdpEntityPathVectorLimit Integer32,
mplsLdpEntityHopCountLimit Integer32,
mplsLdpEntityTransportAddrKind INTEGER,
mplsLdpEntityTargetPeer TruthValue,
mplsLdpEntityTargetPeerAddrType InetAddressType,
mplsLdpEntityTargetPeerAddr InetAddress,
mplsLdpEntityLabelType MplsLdpLabelType,
mplsLdpEntityDiscontinuityTime TimeStamp,
mplsLdpEntityStorageType StorageType,
mplsLdpEntityRowStatus RowStatus
}
mplsLdpEntityLdpId OBJECT-TYPE
SYNTAX MplsLdpIdentifier
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The LDP identifier."
REFERENCE
"RFC3036, LDP Specification, Section on LDP Identifiers."
::= { mplsLdpEntityEntry 1 }
mplsLdpEntityIndex OBJECT-TYPE
SYNTAX IndexInteger
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This index is used as a secondary index to uniquely
identify this row. Before creating a row in this table,
the 'mplsLdpEntityIndexNext' object should be retrieved.
That value should be used for the value of this index
when creating a row in this table. NOTE: if a value
of zero (0) is retrieved, that indicates that no rows
can be created in this table at this time.
A secondary index (this object) is meaningful to some
but not all, LDP implementations. For example
an LDP implementation which uses PPP would
use this index to differentiate PPP sub-links.
Another way to use this index is to give this the
value of ifIndex. However, this is dependant
Cucchiara, et al. Standards Track [Page 15]
RFC 3815 MPLS LDP MIB June 2004
on the implementation."
::= { mplsLdpEntityEntry 2 }
mplsLdpEntityProtocolVersion OBJECT-TYPE
SYNTAX Unsigned32(1..65535)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The version number of the LDP protocol which will be
used in the session initialization message.
Section 3.5.3 in the LDP Specification specifies
that the version of the LDP protocol is negotiated during
session establishment. The value of this object
represents the value that is sent in the initialization
message."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3 Initialization
Message."
DEFVAL { 1 }
::= { mplsLdpEntityEntry 3 }
mplsLdpEntityAdminStatus OBJECT-TYPE
SYNTAX INTEGER {
enable(1),
disable(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The administrative status of this LDP Entity.
If this object is changed from 'enable' to 'disable'
and this entity has already attempted to establish
contact with a Peer, then all contact with that
Peer is lost and all information from that Peer
needs to be removed from the MIB. (This implies
that the network management subsystem should clean
up any related entry in the mplsLdpPeerTable. This
further implies that a 'tear-down' for that session
is issued and the session and all information related
to that session cease to exist).
At this point the operator is able to change values
which are related to this entity.
When the admin status is set back to 'enable', then
this Entity will attempt to establish a new session
with the Peer."
Cucchiara, et al. Standards Track [Page 16]
RFC 3815 MPLS LDP MIB June 2004
DEFVAL { enable }
::= { mplsLdpEntityEntry 4 }
mplsLdpEntityOperStatus OBJECT-TYPE
SYNTAX INTEGER {
unknown(1),
enabled(2),
disabled(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The operational status of this LDP Entity.
The value of unknown(1) indicates that the
operational status cannot be determined at
this time. The value of unknown should be
a transient condition before changing
to enabled(2) or disabled(3)."
::= { mplsLdpEntityEntry 5 }
mplsLdpEntityTcpPort OBJECT-TYPE
SYNTAX InetPortNumber
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The TCP Port for
LDP. The default value is the well-known
value of this port."
REFERENCE
"RFC3036, LDP Specification, Section 3.10, Well-known
Numbers, and Section 3.10.1. UDP and TCP Ports."
DEFVAL { 646 }
::= { mplsLdpEntityEntry 6 }
mplsLdpEntityUdpDscPort OBJECT-TYPE
SYNTAX InetPortNumber
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The UDP Discovery Port for
LDP. The default value is the
well-known value for this port."
REFERENCE
"RFC3036, LDP Specification, Section 2.4.1,
Basic Discovery Mechanism, Section 2.4.2,
Extended Discovery Mechanism, Section
3.10, Well-known Numbers, and Section 3.10.1.
Cucchiara, et al. Standards Track [Page 17]
RFC 3815 MPLS LDP MIB June 2004
UDP and TCP Ports."
DEFVAL { 646 }
::= { mplsLdpEntityEntry 7 }
mplsLdpEntityMaxPduLength OBJECT-TYPE
SYNTAX Unsigned32 (256..65535)
UNITS "octets"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The maximum PDU Length that is sent in
the Common Session Parameters of an Initialization
Message. According to the LDP Specification [RFC3036]
a value of 255 or less specifies the
default maximum length of 4096 octets, this is why
the value of this object starts at 256. The operator
should explicitly choose the default value (i.e., 4096),
or some other value.
The receiving LSR MUST calculate the maximum PDU
length for the session by using the smaller of its and
its peer's proposals for Max PDU Length."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3.
Initialization Message."
DEFVAL { 4096 }
::= { mplsLdpEntityEntry 8 }
mplsLdpEntityKeepAliveHoldTimer OBJECT-TYPE
SYNTAX Unsigned32 (1..65535)
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The 16-bit integer value which is the proposed keep
alive hold timer for this LDP Entity."
DEFVAL { 40 }
::= { mplsLdpEntityEntry 9 }
mplsLdpEntityHelloHoldTimer OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
UNITS "seconds"
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The 16-bit integer value which is the proposed Hello
hold timer for this LDP Entity. The Hello Hold time
in seconds.
Cucchiara, et al. Standards Track [Page 18]
RFC 3815 MPLS LDP MIB June 2004
An LSR maintains a record of Hellos received
from potential peers. This object represents
the Hold Time in the Common Hello Parameters TLV of
the Hello Message.
A value of 0 is a default value and should be
interpretted in conjunction with the
mplsLdpEntityTargetPeer object.
If the value of this object is 0: if the value of the
mplsLdpEntityTargetPeer object is false(2), then this
specifies that the Hold Time's actual default value is
15 seconds (i.e., the default Hold time for Link Hellos
is 15 seconds). Otherwise if the value of the
mplsLdpEntityTargetPeer object is true(1), then this
specifies that the Hold Time's actual default value is
45 seconds (i.e., the default Hold time for Targeted
Hellos is 45 seconds).
A value of 65535 means infinite (i.e., wait forever).
All other values represent the amount of time in
seconds to wait for a Hello Message. Setting the
hold time to a value smaller than 15 is not
recommended, although not forbidden according
to RFC3036."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.2.,
Hello Message."
DEFVAL { 0 }
::= { mplsLdpEntityEntry 10 }
mplsLdpEntityInitSessionThreshold OBJECT-TYPE
SYNTAX Integer32(0..100)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"When attempting to establish a session with
a given Peer, the given LDP Entity should
send out the SNMP notification,
'mplsLdpInitSessionThresholdExceeded', when
the number of Session Initialization messages
sent exceeds this threshold.
The notification is used to notify an
operator when this Entity and its Peer are
possibly engaged in an endless sequence
of messages as each NAKs the other's
Cucchiara, et al. Standards Track [Page 19]
RFC 3815 MPLS LDP MIB June 2004
Initialization messages with Error Notification
messages. Setting this threshold which triggers
the notification is one way to notify the
operator. The notification should be generated
each time this threshold is exceeded and
for every subsequent Initialization message
which is NAK'd with an Error Notification
message after this threshold is exceeded.
A value of 0 (zero) for this object
indicates that the threshold is infinity, thus
the SNMP notification will never be generated."
REFERENCE
"RFC3036, LDP Specification,
Section 2.5.3 Session Initialization."
DEFVAL { 8 }
::= { mplsLdpEntityEntry 11 }
mplsLdpEntityLabelDistMethod OBJECT-TYPE
SYNTAX MplsLabelDistributionMethod
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"For any given LDP session, the method of
label distribution must be specified."
::= { mplsLdpEntityEntry 12 }
mplsLdpEntityLabelRetentionMode OBJECT-TYPE
SYNTAX MplsRetentionMode
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The LDP Entity can be configured to use either
conservative or liberal label retention mode.
If the value of this object is conservative(1)
then advertized label mappings are retained
only if they will be used to forward packets,
i.e., if label came from a valid next hop.
If the value of this object is liberal(2)
then all advertized label mappings are retained
whether they are from a valid next hop or not."
::= { mplsLdpEntityEntry 13 }
mplsLdpEntityPathVectorLimit OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-create
Cucchiara, et al. Standards Track [Page 20]
RFC 3815 MPLS LDP MIB June 2004
STATUS current
DESCRIPTION
"If the value of this object is 0 (zero) then
Loop Detection for Path Vectors is disabled.
Otherwise, if this object has a value greater than
zero, then Loop Dection for Path Vectors is enabled,
and the Path Vector Limit is this value.
Also, the value of the object,
'mplsLdpLsrLoopDetectionCapable', must be set to
either 'pathVector(4)' or 'hopCountAndPathVector(5)',
if this object has a value greater than 0 (zero),
otherwise it is ignored."
REFERENCE
"RFC3036, LDP Specification, Section 2.8 Loop Dection,
Section 3.4.5 Path Vector TLV."
::= { mplsLdpEntityEntry 14 }
mplsLdpEntityHopCountLimit OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If the value of this object is 0 (zero),
then Loop Detection using Hop Counters is
disabled.
If the value of this object is greater than
0 (zero) then Loop Detection using Hop
Counters is enabled, and this object
specifies this Entity's maximum allowable
value for the Hop Count.
Also, the value of the object
mplsLdpLsrLoopDetectionCapable must be set
to either 'hopCount(3)' or
'hopCountAndPathVector(5)' if this object
has a value greater than 0 (zero), otherwise
it is ignored."
DEFVAL { 0 }
::= { mplsLdpEntityEntry 15 }
mplsLdpEntityTransportAddrKind OBJECT-TYPE
SYNTAX INTEGER {
interface(1),
loopback(2)
}
MAX-ACCESS read-create
STATUS current
Cucchiara, et al. Standards Track [Page 21]
RFC 3815 MPLS LDP MIB June 2004
DESCRIPTION
"This specifies whether the loopback or interface
address is to be used as the transport address
in the transport address TLV of the
hello message.
If the value is interface(1), then the IP
address of the interface from which hello
messages are sent is used as the transport
address in the hello message.
Otherwise, if the value is loopback(2), then the IP
address of the loopback interface is used as the
transport address in the hello message."
DEFVAL { loopback }
::= { mplsLdpEntityEntry 16 }
mplsLdpEntityTargetPeer OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If this LDP entity uses targeted peer then set
this to true."
DEFVAL { false }
::= { mplsLdpEntityEntry 17 }
mplsLdpEntityTargetPeerAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of the internetwork layer address used for
the Extended Discovery. This object indicates how
the value of mplsLdpEntityTargetPeerAddr is to
be interpreted."
::= { mplsLdpEntityEntry 18 }
mplsLdpEntityTargetPeerAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of the internetwork layer address
used for the Extended Discovery. The value of
mplsLdpEntityTargetPeerAddrType specifies how
this address is to be interpreted."
::= { mplsLdpEntityEntry 19 }
Cucchiara, et al. Standards Track [Page 22]
RFC 3815 MPLS LDP MIB June 2004
mplsLdpEntityLabelType OBJECT-TYPE
SYNTAX MplsLdpLabelType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"Specifies the optional parameters for the LDP
Initialization Message.
If the value is generic(1) then no
optional parameters will be sent in
the LDP Initialization message associated
with this Entity.
If the value is atmParameters(2) then
a row must be created in the
mplsLdpEntityAtmTable, which
corresponds to this entry.
If the value is frameRelayParameters(3) then
a row must be created in the
mplsLdpEntityFrameRelayTable, which
corresponds to this entry."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3.,
Initialization Message."
::= { mplsLdpEntityEntry 20 }
mplsLdpEntityDiscontinuityTime 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 entity's counters
suffered a discontinuity. The relevant counters
are the specific instances associated with this
entity of any Counter32 object contained
in the 'mplsLdpEntityStatsTable'. If no such
discontinuities have occurred since the last
re-initialization of the local management
subsystem, then this object contains a zero
value."
::= { mplsLdpEntityEntry 21 }
mplsLdpEntityStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
Cucchiara, et al. Standards Track [Page 23]
RFC 3815 MPLS LDP MIB June 2004
DESCRIPTION
"The storage type for this conceptual row.
Conceptual rows having the value 'permanent(4)'
need not allow write-access to any columnar
objects in the row."
DEFVAL{ nonVolatile }
::= { mplsLdpEntityEntry 22 }
mplsLdpEntityRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this conceptual row. All writable
objects in this row may be modified at any
time, however, as described in detail in
the section entitled, 'Changing Values After
Session Establishment', and again described
in the DESCRIPTION clause of the
mplsLdpEntityAdminStatus object, if a session
has been initiated with a Peer, changing objects
in this table will wreak havoc with the session
and interrupt traffic. To repeat again:
the recommended procedure is to
set the mplsLdpEntityAdminStatus to down, thereby
explicitly causing a session to be torn down. Then,
change objects in this entry, then set
the mplsLdpEntityAdminStatus to enable,
which enables a new session to be initiated."
::= { mplsLdpEntityEntry 23 }
--
-- The MPLS LDP Entity Statistics Table
--
mplsLdpEntityStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpEntityStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table is a read-only table which augments
the mplsLdpEntityTable. The purpose of this
table is to keep statistical information about
the LDP Entities on the LSR."
::= { mplsLdpEntityObjects 4 }
mplsLdpEntityStatsEntry OBJECT-TYPE
SYNTAX MplsLdpEntityStatsEntry
Cucchiara, et al. Standards Track [Page 24]
RFC 3815 MPLS LDP MIB June 2004
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A row in this table contains statistical information
about an LDP Entity. Some counters contained in a
row are for fatal errors received during a former
LDP Session associated with this entry. For example,
an LDP PDU received on a TCP connection during an
LDP Session contains a fatal error. That
error is counted here, because the
session is terminated.
If the error is NOT fatal (i.e., the Session
remains), then the error is counted in the
mplsLdpSessionStatsEntry."
AUGMENTS { mplsLdpEntityEntry }
::= { mplsLdpEntityStatsTable 1 }
MplsLdpEntityStatsEntry ::= SEQUENCE {
mplsLdpEntityStatsSessionAttempts Counter32,
mplsLdpEntityStatsSessionRejectedNoHelloErrors Counter32,
mplsLdpEntityStatsSessionRejectedAdErrors Counter32,
mplsLdpEntityStatsSessionRejectedMaxPduErrors Counter32,
mplsLdpEntityStatsSessionRejectedLRErrors Counter32,
mplsLdpEntityStatsBadLdpIdentifierErrors Counter32,
mplsLdpEntityStatsBadPduLengthErrors Counter32,
mplsLdpEntityStatsBadMessageLengthErrors Counter32,
mplsLdpEntityStatsBadTlvLengthErrors Counter32,
mplsLdpEntityStatsMalformedTlvValueErrors Counter32,
mplsLdpEntityStatsKeepAliveTimerExpErrors Counter32,
mplsLdpEntityStatsShutdownReceivedNotifications Counter32,
mplsLdpEntityStatsShutdownSentNotifications Counter32
}
mplsLdpEntityStatsSessionAttempts OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A count of the Session Initialization messages
which were sent or received by this LDP Entity and
were NAK'd. In other words, this counter counts
the number of session initializations that failed.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
Cucchiara, et al. Standards Track [Page 25]
RFC 3815 MPLS LDP MIB June 2004
::= { mplsLdpEntityStatsEntry 1 }
mplsLdpEntityStatsSessionRejectedNoHelloErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A count of the Session Rejected/No Hello Error
Notification Messages sent or received by
this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
::= { mplsLdpEntityStatsEntry 2 }
mplsLdpEntityStatsSessionRejectedAdErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A count of the Session Rejected/Parameters
Advertisement Mode Error Notification Messages sent
or received by this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
::= { mplsLdpEntityStatsEntry 3 }
mplsLdpEntityStatsSessionRejectedMaxPduErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A count of the Session Rejected/Parameters
Max Pdu Length Error Notification Messages sent
or received by this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
::= { mplsLdpEntityStatsEntry 4 }
Cucchiara, et al. Standards Track [Page 26]
RFC 3815 MPLS LDP MIB June 2004
mplsLdpEntityStatsSessionRejectedLRErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"A count of the Session Rejected/Parameters
Label Range Notification Messages sent
or received by this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
::= { mplsLdpEntityStatsEntry 5 }
mplsLdpEntityStatsBadLdpIdentifierErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Bad LDP Identifier
Fatal Errors detected by the session(s)
(past and present) associated with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.1.2."
::= { mplsLdpEntityStatsEntry 6 }
mplsLdpEntityStatsBadPduLengthErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Bad PDU Length
Fatal Errors detected by the session(s)
(past and present) associated with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.1.2."
::= { mplsLdpEntityStatsEntry 7 }
Cucchiara, et al. Standards Track [Page 27]
RFC 3815 MPLS LDP MIB June 2004
mplsLdpEntityStatsBadMessageLengthErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Bad Message
Length Fatal Errors detected by the session(s)
(past and present) associated with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.1.2."
::= { mplsLdpEntityStatsEntry 8 }
mplsLdpEntityStatsBadTlvLengthErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Bad TLV
Length Fatal Errors detected by the session(s)
(past and present) associated with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.1.2."
::= { mplsLdpEntityStatsEntry 9 }
mplsLdpEntityStatsMalformedTlvValueErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Malformed TLV
Value Fatal Errors detected by the session(s)
(past and present) associated with this
LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
Cucchiara, et al. Standards Track [Page 28]
RFC 3815 MPLS LDP MIB June 2004
REFERENCE
"RFC3036, LDP Specification, Section 3.5.1.2."
::= { mplsLdpEntityStatsEntry 10 }
mplsLdpEntityStatsKeepAliveTimerExpErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Session Keep Alive
Timer Expired Errors detected by the session(s)
(past and present) associated with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.1.2."
::= { mplsLdpEntityStatsEntry 11 }
mplsLdpEntityStatsShutdownReceivedNotifications OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Shutdown Notifications
received related to session(s) (past and present)
associated with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpEntityDiscontinuityTime."
::= { mplsLdpEntityStatsEntry 12 }
mplsLdpEntityStatsShutdownSentNotifications OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Shutdown Notfications
sent related to session(s) (past and present) associated
with this LDP Entity.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
Cucchiara, et al. Standards Track [Page 29]
RFC 3815 MPLS LDP MIB June 2004
mplsLdpEntityDiscontinuityTime."
::= { mplsLdpEntityStatsEntry 13 }
--
-- The MPLS LDP Peer Table
--
mplsLdpSessionObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 3 }
mplsLdpPeerLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time of the most
recent addition or deletion to/from the
mplsLdpPeerTable/mplsLdpSessionTable."
::= { mplsLdpSessionObjects 1 }
mplsLdpPeerTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpPeerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about LDP peers known by Entities in
the mplsLdpEntityTable. The information in this table
is based on information from the Entity-Peer interaction
during session initialization but is not appropriate
for the mplsLdpSessionTable, because objects in this
table may or may not be used in session establishment."
::= { mplsLdpSessionObjects 2 }
mplsLdpPeerEntry OBJECT-TYPE
SYNTAX MplsLdpPeerEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a single Peer which is related
to a Session. This table is augmented by
the mplsLdpSessionTable."
INDEX { mplsLdpEntityLdpId,
mplsLdpEntityIndex,
mplsLdpPeerLdpId }
::= { mplsLdpPeerTable 1 }
MplsLdpPeerEntry ::= SEQUENCE {
mplsLdpPeerLdpId MplsLdpIdentifier,
mplsLdpPeerLabelDistMethod MplsLabelDistributionMethod,
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RFC 3815 MPLS LDP MIB June 2004
mplsLdpPeerPathVectorLimit Integer32,
mplsLdpPeerTransportAddrType InetAddressType,
mplsLdpPeerTransportAddr InetAddress
}
mplsLdpPeerLdpId OBJECT-TYPE
SYNTAX MplsLdpIdentifier
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The LDP identifier of this LDP Peer."
::= { mplsLdpPeerEntry 1 }
mplsLdpPeerLabelDistMethod OBJECT-TYPE
SYNTAX MplsLabelDistributionMethod
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"For any given LDP session, the method of
label distribution must be specified."
::= { mplsLdpPeerEntry 2 }
mplsLdpPeerPathVectorLimit OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If the value of this object is 0 (zero) then
Loop Dection for Path Vectors for this Peer
is disabled.
Otherwise, if this object has a value greater than
zero, then Loop Dection for Path Vectors for this
Peer is enabled and the Path Vector Limit is this value."
REFERENCE
"RFC3036, LDP Specification, Section 2.8 Loop Dection,
Section 3.4.5 Path Vector TLV."
::= { mplsLdpPeerEntry 3 }
mplsLdpPeerTransportAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of the Internet address for the
mplsLdpPeerTransportAddr object. The LDP
specification describes this as being either
an IPv4 Transport Address or IPv6 Transport
Cucchiara, et al. Standards Track [Page 31]
RFC 3815 MPLS LDP MIB June 2004
Address which is used in opening the LDP session's
TCP connection, or if the optional TLV is not
present, then this is the IPv4/IPv6 source
address for the UPD packet carrying the Hellos.
This object specifies how the value of the
mplsLdpPeerTransportAddr object should be
interpreted."
REFERENCE
"RFC3036, LDP Specification, Section 2.5.2
Transport Connection Establishment and
Section 3.5.2.1 Hello Message Procedures."
::= { mplsLdpPeerEntry 4 }
mplsLdpPeerTransportAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Internet address advertised by the peer
in the Hello Message or the Hello source address.
The type of this address is specified by the
value of the mplsLdpPeerTransportAddrType
object."
REFERENCE
"RFC3036, LDP Specification, Section 2.5.2
Transport Connection Establishment and
Section 3.5.2.1 Hello Message Procedures."
::= { mplsLdpPeerEntry 5 }
--
-- The MPLS LDP Sessions Table
--
mplsLdpSessionTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpSessionEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of Sessions between the LDP Entities
and LDP Peers. This table AUGMENTS the
mplsLdpPeerTable. Each row in this table
represents a single session."
::= { mplsLdpSessionObjects 3 }
mplsLdpSessionEntry OBJECT-TYPE
SYNTAX MplsLdpSessionEntry
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RFC 3815 MPLS LDP MIB June 2004
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents information on a
single session between an LDP Entity and LDP Peer.
The information contained in a row is read-only.
Please note: the Path Vector Limit for the
Session is the value which is configured in
the corresponding mplsLdpEntityEntry. The
Peer's Path Vector Limit is in the
mplsLdpPeerPathVectorLimit object in the
mplsLdpPeerTable.
Values which may differ from those configured are
noted in the objects of this table, the
mplsLdpAtmSessionTable and the
mplsLdpFrameRelaySessionTable. A value will
differ if it was negotiated between the
Entity and the Peer. Values may or may not
be negotiated. For example, if the values
are the same then no negotiation takes place.
If they are negotiated, then they may differ."
AUGMENTS { mplsLdpPeerEntry }
::= { mplsLdpSessionTable 1 }
MplsLdpSessionEntry ::= SEQUENCE {
mplsLdpSessionStateLastChange TimeStamp,
mplsLdpSessionState INTEGER,
mplsLdpSessionRole INTEGER,
mplsLdpSessionProtocolVersion Unsigned32,
mplsLdpSessionKeepAliveHoldTimeRem TimeInterval,
mplsLdpSessionKeepAliveTime Unsigned32,
mplsLdpSessionMaxPduLength Unsigned32,
mplsLdpSessionDiscontinuityTime TimeStamp
}
mplsLdpSessionStateLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time this
Session entered its current state as
denoted by the mplsLdpSessionState
object."
::= { mplsLdpSessionEntry 1 }
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RFC 3815 MPLS LDP MIB June 2004
mplsLdpSessionState OBJECT-TYPE
SYNTAX INTEGER {
nonexistent(1),
initialized(2),
openrec(3),
opensent(4),
operational(5)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The current state of the session, all of the
states 1 to 5 are based on the state machine
for session negotiation behavior."
REFERENCE
"RFC3036, LDP Specification, Section 2.5.4,
Initialization State Machine."
::= { mplsLdpSessionEntry 2 }
mplsLdpSessionRole OBJECT-TYPE
SYNTAX INTEGER {
unknown(1),
active(2),
passive(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"During session establishment the LSR/LER takes either
the active role or the passive role based on address
comparisons. This object indicates whether this LSR/LER
was behaving in an active role or passive role during
this session's establishment.
The value of unknown(1), indicates that the role is not
able to be determined at the present time."
REFERENCE
"RFC3036, LDP Specification, Section 2.5.3.,
Session Initialization"
::= { mplsLdpSessionEntry 3 }
mplsLdpSessionProtocolVersion OBJECT-TYPE
SYNTAX Unsigned32(1..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The version of the LDP Protocol which
this session is using. This is the version of
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RFC 3815 MPLS LDP MIB June 2004
the LDP protocol which has been negotiated
during session initialization."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3,
Initialization Message."
::= { mplsLdpSessionEntry 4 }
mplsLdpSessionKeepAliveHoldTimeRem OBJECT-TYPE
SYNTAX TimeInterval
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The keep alive hold time remaining for
this session."
::= { mplsLdpSessionEntry 5 }
mplsLdpSessionKeepAliveTime OBJECT-TYPE
SYNTAX Unsigned32 (1..65535)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The negotiated KeepAlive Time which
represents the amount of seconds between
keep alive messages. The
mplsLdpEntityKeepAliveHoldTimer
related to this Session is the
value that was proposed as the
KeepAlive Time for this session.
This value is negotiated during
session initialization between
the entity's proposed value
(i.e., the value configured in
mplsLdpEntityKeepAliveHoldTimer)
and the peer's proposed
KeepAlive Hold Timer value.
This value is the smaller
of the two proposed values."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3,
Initialization Message."
::= { mplsLdpSessionEntry 6 }
mplsLdpSessionMaxPduLength OBJECT-TYPE
SYNTAX Unsigned32 (1..65535)
UNITS "octets"
MAX-ACCESS read-only
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RFC 3815 MPLS LDP MIB June 2004
STATUS current
DESCRIPTION
"The value of maximum allowable length for LDP PDUs for
this session. This value may have been negotiated
during the Session Initialization. This object is
related to the mplsLdpEntityMaxPduLength object. The
mplsLdpEntityMaxPduLength object specifies the requested
LDP PDU length, and this object reflects the negotiated
LDP PDU length between the Entity and
the Peer."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3,
Initialization Message."
::= { mplsLdpSessionEntry 7 }
mplsLdpSessionDiscontinuityTime 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 session's counters
suffered a discontinuity. The relevant counters are
the specific instances associated with this session
of any Counter32 object contained in the
mplsLdpSessionStatsTable.
The initial value of this object is the value of
sysUpTime when the entry was created in this table.
Also, a command generator can distinguish when a session
between a given Entity and Peer goes away and a new
session is established. This value would change and
thus indicate to the command generator that this is a
different session."
::= { mplsLdpSessionEntry 8 }
--
-- The MPLS LDP Session Statistics Table
--
mplsLdpSessionStatsTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpSessionStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of statistics for Sessions between
LDP Entities and LDP Peers. This table AUGMENTS
Cucchiara, et al. Standards Track [Page 36]
RFC 3815 MPLS LDP MIB June 2004
the mplsLdpPeerTable."
::= { mplsLdpSessionObjects 4 }
mplsLdpSessionStatsEntry OBJECT-TYPE
SYNTAX MplsLdpSessionStatsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents statistical
information on a single session between an LDP
Entity and LDP Peer."
AUGMENTS { mplsLdpPeerEntry }
::= { mplsLdpSessionStatsTable 1 }
MplsLdpSessionStatsEntry ::= SEQUENCE {
mplsLdpSessionStatsUnknownMesTypeErrors Counter32,
mplsLdpSessionStatsUnknownTlvErrors Counter32
}
mplsLdpSessionStatsUnknownMesTypeErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Unknown Message Type
Errors detected by this LSR/LER during this session.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpSessionDiscontinuityTime."
::= { mplsLdpSessionStatsEntry 1 }
mplsLdpSessionStatsUnknownTlvErrors OBJECT-TYPE
SYNTAX Counter32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object counts the number of Unknown TLV Errors
detected by this LSR/LER during this session.
Discontinuities in the value of this counter can occur
at re-initialization of the management system, and at
other times as indicated by the value of
mplsLdpSessionDiscontinuityTime."
::= { mplsLdpSessionStatsEntry 2 }
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RFC 3815 MPLS LDP MIB June 2004
--
-- The MPLS LDP Hello Adjacency Table
--
mplsLdpHelloAdjacencyObjects OBJECT IDENTIFIER ::=
{ mplsLdpSessionObjects 5 }
mplsLdpHelloAdjacencyTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpHelloAdjacencyEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of Hello Adjacencies for Sessions."
::= { mplsLdpHelloAdjacencyObjects 1 }
mplsLdpHelloAdjacencyEntry OBJECT-TYPE
SYNTAX MplsLdpHelloAdjacencyEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each row represents a single LDP Hello Adjacency.
An LDP Session can have one or more Hello
Adjacencies."
INDEX { mplsLdpEntityLdpId,
mplsLdpEntityIndex,
mplsLdpPeerLdpId,
mplsLdpHelloAdjacencyIndex }
::= { mplsLdpHelloAdjacencyTable 1 }
MplsLdpHelloAdjacencyEntry ::= SEQUENCE {
mplsLdpHelloAdjacencyIndex Unsigned32,
mplsLdpHelloAdjacencyHoldTimeRem TimeInterval,
mplsLdpHelloAdjacencyHoldTime Unsigned32,
mplsLdpHelloAdjacencyType INTEGER
}
mplsLdpHelloAdjacencyIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An identifier for this specific adjacency."
::= { mplsLdpHelloAdjacencyEntry 1 }
mplsLdpHelloAdjacencyHoldTimeRem OBJECT-TYPE
SYNTAX TimeInterval
UNITS "seconds"
MAX-ACCESS read-only
Cucchiara, et al. Standards Track [Page 38]
RFC 3815 MPLS LDP MIB June 2004
STATUS current
DESCRIPTION
"If the value of this object is 65535,
this means that the hold time is infinite
(i.e., wait forever).
Otherwise, the time remaining for
this Hello Adjacency to receive its
next Hello Message.
This interval will change when the 'next'
Hello Message which corresponds to this
Hello Adjacency is received unless it
is infinite."
::= { mplsLdpHelloAdjacencyEntry 2 }
mplsLdpHelloAdjacencyHoldTime OBJECT-TYPE
SYNTAX Unsigned32 (0..65535)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Hello hold time which is negotiated between
the Entity and the Peer. The entity associated
with this Hello Adjacency issues a proposed
Hello Hold Time value in the
mplsLdpEntityHelloHoldTimer object. The peer
also proposes a value and this object represents
the negotiated value.
A value of 0 means the default,
which is 15 seconds for Link Hellos
and 45 seconds for Targeted Hellos.
A value of 65535 indicates an
infinite hold time."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.2 Hello Message"
::= { mplsLdpHelloAdjacencyEntry 3 }
mplsLdpHelloAdjacencyType OBJECT-TYPE
SYNTAX INTEGER {
link(1),
targeted(2)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This adjacency is the result of a 'link'
hello if the value of this object is link(1).
Cucchiara, et al. Standards Track [Page 39]
RFC 3815 MPLS LDP MIB June 2004
Otherwise, it is a result of a 'targeted'
hello, targeted(2)."
::= { mplsLdpHelloAdjacencyEntry 4 }
--
-- Session Label (LSP) Mapping to LSR MIB's
-- In Segment LIB Information.
--
--
-- NOTE: the next 2 tables map to the
-- MPLS-LSR-STD-MIB's MplsInSegmentTable
-- and MplsOutSegmentTable. The
-- cross-connect (XC) information is not
-- represented here as it can be gleaned
-- from the MPLS-LSR-STD-MIB.
--
mplsInSegmentLdpLspTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsInSegmentLdpLspEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of LDP LSP's which
map to the mplsInSegmentTable in the
MPLS-LSR-STD-MIB module."
::= { mplsLdpSessionObjects 6 }
mplsInSegmentLdpLspEntry OBJECT-TYPE
SYNTAX MplsInSegmentLdpLspEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents information
on a single LDP LSP which is represented by
a session's index triple (mplsLdpEntityLdpId,
mplsLdpEntityIndex, mplsLdpPeerLdpId) AND the
index for the mplsInSegmentTable
(mplsInSegmentLdpLspLabelIndex) from the
MPLS-LSR-STD-MIB.
The information contained in a row is read-only."
INDEX { mplsLdpEntityLdpId,
mplsLdpEntityIndex,
mplsLdpPeerLdpId,
mplsInSegmentLdpLspIndex
}
::= { mplsInSegmentLdpLspTable 1 }
Cucchiara, et al. Standards Track [Page 40]
RFC 3815 MPLS LDP MIB June 2004
MplsInSegmentLdpLspEntry ::= SEQUENCE {
mplsInSegmentLdpLspIndex MplsIndexType,
mplsInSegmentLdpLspLabelType MplsLdpLabelType,
mplsInSegmentLdpLspType MplsLspType
}
mplsInSegmentLdpLspIndex OBJECT-TYPE
SYNTAX MplsIndexType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This contains the same value as the
mplsInSegmentIndex in the
MPLS-LSR-STD-MIB's mplsInSegmentTable."
::= { mplsInSegmentLdpLspEntry 1 }
mplsInSegmentLdpLspLabelType OBJECT-TYPE
SYNTAX MplsLdpLabelType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Layer 2 Label Type."
::= { mplsInSegmentLdpLspEntry 2 }
mplsInSegmentLdpLspType OBJECT-TYPE
SYNTAX MplsLspType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The type of LSP connection."
::= { mplsInSegmentLdpLspEntry 3 }
--
-- Session Label (LSP) Mapping to LSR MIB's
-- Out Segment LIB Information.
--
mplsOutSegmentLdpLspTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsOutSegmentLdpLspEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table of LDP LSP's which
map to the mplsOutSegmentTable in the
MPLS-LSR-STD-MIB."
::= { mplsLdpSessionObjects 7 }
mplsOutSegmentLdpLspEntry OBJECT-TYPE
Cucchiara, et al. Standards Track [Page 41]
RFC 3815 MPLS LDP MIB June 2004
SYNTAX MplsOutSegmentLdpLspEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents information
on a single LDP LSP which is represented by
a session's index triple (mplsLdpEntityLdpId,
mplsLdpEntityIndex, mplsLdpPeerLdpId) AND the
index (mplsOutSegmentLdpLspIndex)
for the mplsOutSegmentTable.
The information contained in a row is read-only."
INDEX { mplsLdpEntityLdpId,
mplsLdpEntityIndex,
mplsLdpPeerLdpId,
mplsOutSegmentLdpLspIndex
}
::= { mplsOutSegmentLdpLspTable 1 }
MplsOutSegmentLdpLspEntry ::= SEQUENCE {
mplsOutSegmentLdpLspIndex MplsIndexType,
mplsOutSegmentLdpLspLabelType MplsLdpLabelType,
mplsOutSegmentLdpLspType MplsLspType
}
mplsOutSegmentLdpLspIndex OBJECT-TYPE
SYNTAX MplsIndexType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This contains the same value as the
mplsOutSegmentIndex in the
MPLS-LSR-STD-MIB's mplsOutSegmentTable."
::= { mplsOutSegmentLdpLspEntry 1 }
mplsOutSegmentLdpLspLabelType OBJECT-TYPE
SYNTAX MplsLdpLabelType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The Layer 2 Label Type."
::= { mplsOutSegmentLdpLspEntry 2 }
mplsOutSegmentLdpLspType OBJECT-TYPE
SYNTAX MplsLspType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
Cucchiara, et al. Standards Track [Page 42]
RFC 3815 MPLS LDP MIB June 2004
"The type of LSP connection."
::= { mplsOutSegmentLdpLspEntry 3 }
--
-- Mpls FEC Table
--
mplsFecObjects OBJECT IDENTIFIER ::=
{ mplsLdpSessionObjects 8 }
mplsFecLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time of the most
recent addition/deletion of an entry
to/from the mplsLdpFectTable or
the most recent change in values to any objects
in the mplsLdpFecTable.
If no such changes have occurred since the last
re-initialization of the local management subsystem,
then this object contains a zero value."
::= { mplsFecObjects 1 }
mplsFecIndexNext OBJECT-TYPE
SYNTAX IndexIntegerNextFree
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This object contains an appropriate value to
be used for mplsFecIndex when creating
entries in the mplsFecTable. The value
0 indicates that no unassigned entries are
available."
::= { mplsFecObjects 2 }
mplsFecTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsFecEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table represents the FEC
(Forwarding Equivalence Class)
Information associated with an LSP."
::= { mplsFecObjects 3 }
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RFC 3815 MPLS LDP MIB June 2004
mplsFecEntry OBJECT-TYPE
SYNTAX MplsFecEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Each row represents a single FEC Element."
INDEX { mplsFecIndex }
::= { mplsFecTable 1 }
MplsFecEntry ::= SEQUENCE {
mplsFecIndex IndexInteger,
mplsFecType INTEGER,
mplsFecAddrType InetAddressType,
mplsFecAddr InetAddress,
mplsFecAddrPrefixLength InetAddressPrefixLength,
mplsFecStorageType StorageType,
mplsFecRowStatus RowStatus
}
mplsFecIndex OBJECT-TYPE
SYNTAX IndexInteger
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The index which uniquely identifies this entry."
::= { mplsFecEntry 1 }
mplsFecType OBJECT-TYPE
SYNTAX INTEGER {
prefix(1),
hostAddress(2)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The type of the FEC. If the value of this object
is 'prefix(1)' then the FEC type described by this
row is an address prefix.
If the value of this object is 'hostAddress(2)' then
the FEC type described by this row is a host address."
REFERENCE
"RFC3036, Section 3.4.1. FEC TLV."
::= { mplsFecEntry 2 }
mplsFecAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-create
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RFC 3815 MPLS LDP MIB June 2004
STATUS current
DESCRIPTION
"The value of this object is the type of the
Internet address. The value of this object,
decides how the value of the mplsFecAddr object
is interpreted."
REFERENCE
"RFC3036, Section 3.4.1. FEC TLV."
::= { mplsFecEntry 4 }
mplsFecAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of this object is interpreted based
on the value of the 'mplsFecAddrType' object.
This address is then further interpretted as
an being used with the address prefix,
or as the host address. This further interpretation
is indicated by the 'mplsFecType' object.
In other words, the FEC element is populated
according to the Prefix FEC Element value encoding, or
the Host Address FEC Element encoding."
REFERENCE
"RFC3036, Section 3.4.1 FEC TLV."
::= { mplsFecEntry 5 }
mplsFecAddrPrefixLength OBJECT-TYPE
SYNTAX InetAddressPrefixLength
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"If the value of the 'mplsFecType' is 'hostAddress(2)'
then this object is undefined.
If the value of 'mplsFecType' is 'prefix(1)'
then the value of this object is the length in
bits of the address prefix represented by
'mplsFecAddr', or zero. If the value of this
object is zero, this indicates that the
prefix matches all addresses. In this case the
address prefix MUST also be zero (i.e., 'mplsFecAddr'
should have the value of zero.)"
REFERENCE
"RFC3036, Section 3.4.1. FEC TLV."
DEFVAL { 0 }
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RFC 3815 MPLS LDP MIB June 2004
::= { mplsFecEntry 3 }
mplsFecStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The storage type for this conceptual row.
Conceptual rows having the value 'permanent(4)'
need not allow write-access to any columnar
objects in the row."
DEFVAL { nonVolatile }
::= { mplsFecEntry 6 }
mplsFecRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this conceptual row. If the value of this
object is 'active(1)', then none of the writable objects
of this entry can be modified, except to set this object
to 'destroy(6)'.
NOTE: if this row is being referenced by any entry in
the mplsLdpLspFecTable, then a request to destroy
this row, will result in an inconsistentValue error."
::= { mplsFecEntry 7 }
--
-- LDP LSP FEC Table
--
mplsLdpLspFecLastChange OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time of the most
recent addition/deletion of an entry
to/from the mplsLdpLspFecTable or
the most recent change in values to any objects in the
mplsLdpLspFecTable.
If no such changes have occurred since the last
re-initialization of the local management subsystem,
then this object contains a zero value."
::= { mplsLdpSessionObjects 9 }
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RFC 3815 MPLS LDP MIB June 2004
mplsLdpLspFecTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpLspFecEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table which shows the relationship between
LDP LSPs and FECs. Each row represents
a single LDP LSP to FEC association."
::= { mplsLdpSessionObjects 10 }
mplsLdpLspFecEntry OBJECT-TYPE
SYNTAX MplsLdpLspFecEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry represents a LDP LSP
to FEC association."
INDEX { mplsLdpEntityLdpId,
mplsLdpEntityIndex,
mplsLdpPeerLdpId,
mplsLdpLspFecSegment,
mplsLdpLspFecSegmentIndex,
mplsLdpLspFecIndex
}
::= { mplsLdpLspFecTable 1 }
MplsLdpLspFecEntry ::= SEQUENCE {
mplsLdpLspFecSegment INTEGER,
mplsLdpLspFecSegmentIndex MplsIndexType,
mplsLdpLspFecIndex IndexInteger,
mplsLdpLspFecStorageType StorageType,
mplsLdpLspFecRowStatus RowStatus
}
mplsLdpLspFecSegment OBJECT-TYPE
SYNTAX INTEGER {
inSegment(1),
outSegment(2)
}
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"If the value is inSegment(1), then this
indicates that the following index,
mplsLdpLspFecSegmentIndex, contains the same
value as the mplsInSegmentLdpLspIndex.
Otherwise, if the value of this object is
Cucchiara, et al. Standards Track [Page 47]
RFC 3815 MPLS LDP MIB June 2004
outSegment(2), then this
indicates that following index,
mplsLdpLspFecSegmentIndex, contains the same
value as the mplsOutSegmentLdpLspIndex."
::= { mplsLdpLspFecEntry 1 }
mplsLdpLspFecSegmentIndex OBJECT-TYPE
SYNTAX MplsIndexType
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This index is interpretted by using the value
of the mplsLdpLspFecSegment.
If the mplsLdpLspFecSegment is inSegment(1),
then this index has the same value as
mplsInSegmentLdpLspIndex.
If the mplsLdpLspFecSegment is outSegment(2),
then this index has the same value as
mplsOutSegmentLdpLspIndex."
::= { mplsLdpLspFecEntry 2 }
mplsLdpLspFecIndex OBJECT-TYPE
SYNTAX IndexInteger
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This index identifies the FEC entry in the
mplsFecTable associated with this session.
In other words, the value of this index
is the same as the value of the mplsFecIndex
that denotes the FEC associated with this
Session."
::= { mplsLdpLspFecEntry 3 }
mplsLdpLspFecStorageType OBJECT-TYPE
SYNTAX StorageType
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The storage type for this conceptual row.
Conceptual rows having the value 'permanent(4)'
need not allow write-access to any columnar
objects in the row."
DEFVAL { nonVolatile }
::= { mplsLdpLspFecEntry 4 }
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RFC 3815 MPLS LDP MIB June 2004
mplsLdpLspFecRowStatus OBJECT-TYPE
SYNTAX RowStatus
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The status of this conceptual row. If the
value of this object is 'active(1)', then
none of the writable objects of this entry
can be modified.
The Agent should delete this row when
the session ceases to exist. If an
operator wants to associate the session with
a different FEC, the recommended
procedure is (as described in detail in the section
entitled, 'Changing Values After Session
Establishment', and again described in the
DESCRIPTION clause of the
mplsLdpEntityAdminStatus object)
is to set the mplsLdpEntityAdminStatus to
down, thereby explicitly causing a session
to be torn down. This will also
cause this entry to be deleted.
Then, set the mplsLdpEntityAdminStatus
to enable which enables a new session to be initiated.
Once the session is initiated, an entry may be
added to this table to associate the new session
with a FEC."
::= { mplsLdpLspFecEntry 5 }
--
-- Address Message/Address Withdraw Message Information
--
-- This information is associated with a specific Session
-- because Label Address Messages are sent after session
-- initialization has taken place.
--
mplsLdpSessionPeerAddrTable OBJECT-TYPE
SYNTAX SEQUENCE OF MplsLdpSessionPeerAddrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table 'extends' the mplsLdpSessionTable.
This table is used to store Label Address Information
from Label Address Messages received by this LSR from
Peers. This table is read-only and should be updated
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RFC 3815 MPLS LDP MIB June 2004
when Label Withdraw Address Messages are received, i.e.,
Rows should be deleted as appropriate.
NOTE: since more than one address may be contained
in a Label Address Message, this table 'sparse augments',
the mplsLdpSessionTable's information."
::= { mplsLdpSessionObjects 11 }
mplsLdpSessionPeerAddrEntry OBJECT-TYPE
SYNTAX MplsLdpSessionPeerAddrEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in this table represents information on
a session's single next hop address which was
advertised in an Address Message from the LDP peer.
The information contained in a row is read-only."
INDEX { mplsLdpEntityLdpId,
mplsLdpEntityIndex,
mplsLdpPeerLdpId,
mplsLdpSessionPeerAddrIndex
}
::= { mplsLdpSessionPeerAddrTable 1 }
MplsLdpSessionPeerAddrEntry ::= SEQUENCE {
mplsLdpSessionPeerAddrIndex Unsigned32,
mplsLdpSessionPeerNextHopAddrType InetAddressType,
mplsLdpSessionPeerNextHopAddr InetAddress
}
mplsLdpSessionPeerAddrIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An index which uniquely identifies this entry within
a given session."
::= { mplsLdpSessionPeerAddrEntry 1 }
mplsLdpSessionPeerNextHopAddrType OBJECT-TYPE
SYNTAX InetAddressType
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The internetwork layer address type of this Next Hop
Address as specified in the Label Address Message
associated with this Session. The value of this
object indicates how to interpret the value of
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RFC 3815 MPLS LDP MIB June 2004
mplsLdpSessionPeerNextHopAddr."
::= { mplsLdpSessionPeerAddrEntry 2 }
mplsLdpSessionPeerNextHopAddr OBJECT-TYPE
SYNTAX InetAddress
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The next hop address. The type of this address
is specified by the value of the
mplsLdpSessionPeerNextHopAddrType."
REFERENCE
"RFC3036, Section 2.7. LDP Identifiers
and Next Hop Addresses"
::= { mplsLdpSessionPeerAddrEntry 3 }
---
--- Notifications
---
mplsLdpInitSessionThresholdExceeded NOTIFICATION-TYPE
OBJECTS {
mplsLdpEntityInitSessionThreshold
}
STATUS current
DESCRIPTION
"This notification is generated when the value of
the 'mplsLdpEntityInitSessionThreshold' object
is not zero, and the number of Session
Initialization messages exceeds the value
of the 'mplsLdpEntityInitSessionThreshold' object."
::= { mplsLdpNotifications 1 }
mplsLdpPathVectorLimitMismatch NOTIFICATION-TYPE
OBJECTS {
mplsLdpEntityPathVectorLimit,
mplsLdpPeerPathVectorLimit
}
STATUS current
DESCRIPTION
"This notification is sent when the
'mplsLdpEntityPathVectorLimit' does NOT match
the value of the 'mplsLdpPeerPathVectorLimit' for
a specific Entity."
REFERENCE
"RFC3036, LDP Specification, Section 3.5.3."
::= { mplsLdpNotifications 2 }
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RFC 3815 MPLS LDP MIB June 2004
mplsLdpSessionUp NOTIFICATION-TYPE
OBJECTS {
mplsLdpSessionState,
mplsLdpSessionDiscontinuityTime,
mplsLdpSessionStatsUnknownMesTypeErrors,
mplsLdpSessionStatsUnknownTlvErrors
}
STATUS current
DESCRIPTION
"If this notification is sent when the
value of 'mplsLdpSessionState' enters
the 'operational(5)' state."
::= { mplsLdpNotifications 3 }
mplsLdpSessionDown NOTIFICATION-TYPE
OBJECTS {
mplsLdpSessionState,
mplsLdpSessionDiscontinuityTime,
mplsLdpSessionStatsUnknownMesTypeErrors,
mplsLdpSessionStatsUnknownTlvErrors
}
STATUS current
DESCRIPTION
"This notification is sent when the
value of 'mplsLdpSessionState' leaves
the 'operational(5)' state."
::= { mplsLdpNotifications 4 }
--****************************************************************
-- Module Conformance Statement
--****************************************************************
mplsLdpGroups
OBJECT IDENTIFIER ::= { mplsLdpConformance 1 }
mplsLdpCompliances
OBJECT IDENTIFIER ::= { mplsLdpConformance 2 }
--
-- Full Compliance
--
mplsLdpModuleFullCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The Module is implemented with support
for read-create and read-write. In other
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RFC 3815 MPLS LDP MIB June 2004
words, both monitoring and configuration
are available when using this MODULE-COMPLIANCE."
MODULE -- this module
MANDATORY-GROUPS { mplsLdpGeneralGroup,
mplsLdpNotificationsGroup
}
GROUP mplsLdpLspGroup
DESCRIPTION
"This group must be supported if the LSR MIB is
implemented, specifically the mplsInSegmentTable,
the mplsOutSegmentTable or the mplsXCTable."
OBJECT mplsLdpEntityTargetPeerAddrType
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
DESCRIPTION
"An implementation is only required to support
'unknown(0)', IPv4 and globally unique IPv6 addresses."
OBJECT mplsLdpEntityTargetPeerAddr
SYNTAX InetAddress (SIZE(0|4|16))
DESCRIPTION
"An implementation is only required to support IPv4 and
globally unique IPv6 addresses."
OBJECT mplsLdpEntityRowStatus
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
"Support for createAndWait and notInService is not
required."
OBJECT mplsFecAddrType
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
DESCRIPTION
"An implementation is only required to support
'unknown(0)', IPv4 and globally unique IPv6 addresses."
OBJECT mplsFecAddr
SYNTAX InetAddress (SIZE(0|4|16))
DESCRIPTION
"An implementation is only required to support IPv4 and
globally unique IPv6 addresses."
OBJECT mplsFecRowStatus
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
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RFC 3815 MPLS LDP MIB June 2004
"Support for createAndWait and notInService is not
required."
OBJECT mplsLdpLspFecRowStatus
SYNTAX RowStatus { active(1) }
WRITE-SYNTAX RowStatus { createAndGo(4), destroy(6) }
DESCRIPTION
"Support for createAndWait and notInService is not
required."
OBJECT mplsLdpSessionPeerNextHopAddrType
SYNTAX InetAddressType { unknown(0), ipv4(1), ipv6(2) }
DESCRIPTION
"An implementation is only required to support
'unknown(0)', IPv4 and globally unique IPv6 addresses."
OBJECT mplsLdpSessionPeerNextHopAddr
SYNTAX InetAddress (SIZE(0|4|16))
DESCRIPTION
"An implementation is only required to support IPv4
and globally unique IPv6 addresses."
::= { mplsLdpCompliances 1 }
--
-- Read-Only Compliance
--
mplsLdpModuleReadOnlyCompliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The Module is implemented with support
for read-only. In other words, only monitoring
is available by implementing this MODULE-COMPLIANCE."
MODULE -- this module
MANDATORY-GROUPS { mplsLdpGeneralGroup,
mplsLdpNotificationsGroup
}
GROUP mplsLdpLspGroup
DESCRIPTION
"This group must be supported if the LSR MIB is
implemented, specifically the mplsInSegmentTable,
the mplsOutSegmentTable or the mplsXCTable."
OBJECT mplsLdpEntityProtocolVersion
MIN-ACCESS read-only
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RFC 3815 MPLS LDP MIB June 2004
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityAdminStatus
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityTcpPort
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityUdpDscPort
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityMaxPduLength
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityKeepAliveHoldTimer
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityHelloHoldTimer
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityInitSessionThreshold
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityLabelDistMethod
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityLabelRetentionMode
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
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RFC 3815 MPLS LDP MIB June 2004
OBJECT mplsLdpEntityPathVectorLimit
MIN-ACCESS read-only
DESCRIPTION
"Write access is not required."
OBJECT mplsLdpEntityHopCou |
