Management Information Base for MPLS LDP Multi Topology
draft-li-mpls-ldp-mt-mib-06

Versions: 00 01 02 03 04 05 06                                          
MPLS Working Group                                              Chen. Li
Internet-Draft                                              Lianyuan. Li
Intended status: Standards Track                               Lu. Huang
Expires: December 29, 2012                                  China Mobile
                                                             Emily. Chen
                                                           Quintin. Zhao
                                                     Huawei Technologies
                                                           June 27, 2012


        Management Information Base for MPLS LDP Multi Topology
                      draft-li-mpls-ldp-mt-mib-03

Abstract

   This memo defines an portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes a MIB module for Multi-Topology Networks
   over Multi-protocol Label Switching(MPLS) Label Switching
   Routers(LSRs).

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

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

   This Internet-Draft will expire on December 29, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect



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   to this document.  Code Components extracted from this document must
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   This document may contain material from IETF Documents or IETF
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  The Internet-Standard Management Framework . . . . . . . . . .  4
   3.  Overview of MPLS-LDP-MT-STD-MIB objects  . . . . . . . . . . .  4
     3.1.  MPLS LDP MT Entity Table . . . . . . . . . . . . . . . . .  4
     3.2.  MPLS LDP MT Entity Statistics Table  . . . . . . . . . . .  5
     3.3.  MPLS LDP MT Session Table  . . . . . . . . . . . . . . . .  5
     3.4.  MPLS LDP MT In-segment Tables  . . . . . . . . . . . . . .  5
     3.5.  MPLS LDP MT Out-segment Tables . . . . . . . . . . . . . .  5
     3.6.  MPLS LDP MT LSP Table  . . . . . . . . . . . . . . . . . .  5
     3.7.  MPLS LDP MT Notifications  . . . . . . . . . . . . . . . .  5
   4.  MPLS-LDP-MT-STD-MIB Module Definitions . . . . . . . . . . . .  6
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 28
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 28
   7.  Normative References . . . . . . . . . . . . . . . . . . . . . 28
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 29


































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1.  Introduction

   There are increasing requirements to support multi-topology in MPLS
   network.  For example, service providers want to assign different
   level of service(s) to different topologies so that the service
   separation can be achieved.  It is also possible to have an in-band
   management network on top of the original MPLS topology, or maintain
   separate routing and MPLS domains for isolated multicast or IPv6
   islands within the backbone, or force a subset of an address space to
   follow a different MPLS topology for the purpose of security, QoS or
   simplified management and/or operations.

   For a detailed overview of the multi topology, please refer to
   I-D.ietf-mpls-ldp-multi-topology.


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.  Overview of MPLS-LDP-MT-STD-MIB objects

   The following subsections describe the purpose of each of the objects
   contained in the MPLS-LDP-MT-STD-MIB.

3.1.  MPLS LDP MT Entity Table

   The mplsLdpEntityTable specified in [RFC3815] is used to configure
   information which is used by the LDP protocol to setup potential LDP
   Sessions.  The mplsLdpMtEntityTable can be considered as an extension
   to mplsLdpEntityTable to setup potential LDP MT Sessions.

   Each entry/row in this table represents a single LDP MT Entity.
   There is no maximum number of LDP MT Entities specified.  However,
   there is an mplsLdpMtEntityIndexNext object which should be retrieved
   by the command generator prior to creating an LDP MT Entity.  If the
   mplsLdpMtEntityIndexNext object is zero, this indicates that the LSR/
   LER is not able to create another LDP MT Entity at that time.



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3.2.  MPLS LDP MT Entity Statistics Table

   This table provides MPLS Multi Topology performance information on a
   per-interface basis.

3.3.  MPLS LDP MT Session Table

   Since all the MT related label messages can be advertised by LDP
   Sessions in default topology, there is no need to create extra tcp
   connection for Multi Topology.

   The mplsLdpMtSessionTable is a read-only table.  Each entry in this
   table represents an MT Session which is related to one or more LDP MT
   Entities and only one LDP Session in default topology.

3.4.  MPLS LDP MT In-segment Tables

   The mplsLdpMtInSegmentTable contains information about the MPLS Label
   Distribution Protocol Multi Topology In-Segments which exist on this
   Label Switching Router (LSR) or Label Edge Router (LER).

   The mplsLdpMtInSegmentStatsTable contains statistical information for
   LDP MT in-segments.

3.5.  MPLS LDP MT Out-segment Tables

   This table contains information about the MPLS Label Distribution
   Protocol Multi Topology Out-Segments which exist on this Label
   Switching Router (LSR) or Label Edge Router (LER).

   The mplsLdpMtOutSegmentStatsTable contains statistical information
   for LDP MT out-segments.

3.6.  MPLS LDP MT LSP Table

   This table specifies MT LIB label switching information.  Entries in
   this table define LIB label switching entries associated with the
   specified FEC of the specified topology.

3.7.  MPLS LDP MT Notifications

   The mplsLdpMtLspUp and mplsLdpMtLspDown notifications are generated
   when there is an appropriate change in the mplsLdpMtLspOperStatus
   object, e.g., when the LSP changes state (Up to Down for the
   mplsLdpMtLspDown notification, or Down to Up for the mplsLdpMtLspUp
   notification).





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4.  MPLS-LDP-MT-STD-MIB Module Definitions

        MPLS-LDP-MT-STD-MIB DEFINITIONS ::= BEGIN

                IMPORTS
                        IndexIntegerNextFree, IndexInteger
                                FROM DIFFSERV-MIB
                        InetAddress, InetAddressPrefixLength
                                FROM INET-ADDRESS-MIB
                        MplsIndexType
                                FROM MPLS-LSR-STD-MIB
                        MplsLdpLabelType, MplsLspType, MplsLdpIdentifier
                                FROM MPLS-TC-STD-MIB
                        OBJECT-GROUP, MODULE-COMPLIANCE, NOTIFICATION-GROUP
                                FROM SNMPv2-CONF
                        transmission, TimeTicks, Integer32, Unsigned32, Counter32,
                        Counter64, OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE
                                FROM SNMPv2-SMI
                        TimeStamp, StorageType, RowStatus
                                FROM SNMPv2-TC;


                mplsLdpMtStdMIB MODULE-IDENTITY
                        LAST-UPDATED "201206131436Z"            -- June 13, 2012 at 14:36 GMT
                        ORGANIZATION
                                "Multiprotocol Label Switching (mpls) Working Group"
                        CONTACT-INFO
                                "Chen Li (lichenyj@chinamobile.com)
                                Lianyuan Li (lilianyuan@chinamobile.com)
                                Lu Huang (huanglu@chinamobile.com)
                                China Mobile

                                Emily Chen (emily.chenying@huawei.com)
                                Quintin Zhao (qzhao@huawei.com)
                                Huawei Technologies"
                        DESCRIPTION
                                "This MIB contains managed object definitions for the 'Multiprotocol
                                Label Switching, Label Distribution Protocol, Multi Topology'
                                document."
                        ::= { mplsStdMIB 1 }




--
-- Node definitions
--




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--  1.3.6.1.2.1.10.1.1
                mplsStdMIB OBJECT IDENTIFIER ::= { transmission 166 }


                mplsLdpMtNotifications OBJECT IDENTIFIER ::= { mplsLdpMtStdMIB 0 }


                mplsLdpMtLspUp NOTIFICATION-TYPE
                        OBJECTS { mplsLdpMtLspOperStatus,       -- start of range
                                  mplsLdpMtLspOperStatus        -- end of range
                        }
                        STATUS current
                        DESCRIPTION
                                "This notification is generated when the
                                mplsLdpMtLspOperStatus object for one or more
                                contiguous entries in mplsLdpMtLspTable are
                                about to enter the up(1) state from some other
                                state. The included values of mplsLdpMtLspOperStatus
                                MUST both be set equal to this new state (i.e: up(1)).
                                The two instances of mplsLdpMtLspOperStatus 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 mplsLdpMtLspOperStatus objects MUST be the
                                identical."
                        ::= { mplsLdpMtNotifications 1 }


                mplsLdpMtLspDown NOTIFICATION-TYPE
                        OBJECTS { mplsLdpMtLspOperStatus,       -- start of range
                                  mplsLdpMtLspOperStatus        -- end of range
                        }
                        STATUS current
                        DESCRIPTION
                                "This notification is generated when the
                                mplsLdpMtLspOperStatus object for one or more
                                contiguous entries in mplsLdpMtLspTable are about
                                to enter the down(2) state from some other state.
                                The included values of mplsLdpMtLspOperStatus



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                                MUST both be set equal to this down(2) state.
                                The two instances of mplsLdpMtLspOperStatus 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 mplsLdpMtLspOperStatus objects
                                MUST be identical."
                        ::= { mplsLdpMtNotifications 2 }


                mplsLdpMtObjects OBJECT IDENTIFIER ::= { mplsLdpMtStdMIB 1 }


                mplsLdpMtEntityObjects OBJECT IDENTIFIER ::= { mplsLdpMtObjects 1 }


                mplsLpMtEntityLastChange 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 mplsLdpMtEntityTable, or
                                the most recent change in value of any objects in the
                                mplsLdpMtEntityTable.

                                If no such changes have occurred since the last
                                re-initialization of the local management subsystem,
                                then this object contains a zero value."
                        ::= { mplsLdpMtEntityObjects 1 }


                mplsLdpMtEntityIndexNext OBJECT-TYPE
                        SYNTAX IndexIntegerNextFree
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "This object contains an appropriate value to
                                be used for mplsLdpEntityIndex when creating



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                                entries in the mplsLdpEntityTable. The value
                                0 indicates that no unassigned entries are
                                available."
                        ::= { mplsLdpMtEntityObjects 2 }


-- mplsLdpMtEntityTable
                mplsLdpMtEntityTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtEntityEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "This table contains information about the
                                MPLS Label Distribution Protocol Multi Topology
                                Entities which exist on this Label Switching
                                Router (LSR) or Label Edge Router (LER)."
                        ::= { mplsLdpMtEntityObjects 3 }


                mplsLdpMtEntityEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtEntityEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table represents an LDP MT
                                entity.  An entry can be created by a network
                                administrator or by an SNMP agent as instructed
                                by LDP."
                        INDEX { mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId, mplsLdpMtEntityIndex }
                        ::= { mplsLdpMtEntityTable 1 }


                MplsLdpMtEntityEntry ::=
                        SEQUENCE {
                                mplsLdpMtEntityLdpId
                                        MplsLdpIdentifier,
                                mplsLdpMtEntityMtId
                                        Unsigned32,
                                mplsLdpMtEntityIndex
                                        IndexInteger,
                                mplsLdpMtEntityAdminStatus
                                        INTEGER,
                                mplsLdpMtEntityStorageType
                                        StorageType,
                                mplsLdpMtEntityRowStatus
                                        RowStatus
                         }




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                mplsLdpMtEntityLdpId OBJECT-TYPE
                        SYNTAX MplsLdpIdentifier
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "The LDP identifier."
                        REFERENCE
                                "RFC 5036, LDP Specification, Section on LDP Identifiers."
                        ::= { mplsLdpMtEntityEntry 1 }


                mplsLdpMtEntityMtId OBJECT-TYPE
                        SYNTAX Unsigned32 (0..65535)
                        MAX-ACCESS read-create
                        STATUS current
                        DESCRIPTION
                                "The Multi Topology identifier of this LDP MT Entity."
                        REFERENCE
                                "draft-ietf-mpls-ldp-multi-topology, LDP Extensions for
                                Multi Topology Routing, Section on Multi-Topology ID."
                        ::= { mplsLdpMtEntityEntry 2 }


                mplsLdpMtEntityIndex 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 'mplsLdpMtEntityIndexNext' 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."
                        ::= { mplsLdpMtEntityEntry 3 }


                mplsLdpMtEntityAdminStatus OBJECT-TYPE
                        SYNTAX INTEGER
                                {
                                enable(1),
                                disable(2)
                                }
                        MAX-ACCESS read-create
                        STATUS current
                        DESCRIPTION
                                "The administrative status of this LDP MT Entity.  If



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                                this object is changed from 'enable' to 'disable' and
                                this entity has already attempted to establish contact
                                with a MT Session, then all contact with that MT Session
                                is lost and all information from that MT Session needs
                                to be removed from the MIB.  (This implies that the network
                                management subsystem should clean up any related entry
                                in the mplsLdpMtSessionTable.).  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 MT Entity will attempt to establish a new MT Session."
                        DEFVAL { enable }
                        ::= { mplsLdpMtEntityEntry 4 }


                mplsLdpMtEntityStorageType 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."
                        ::= { mplsLdpMtEntityEntry 5 }


                mplsLdpMtEntityRowStatus 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
                                mplsLdpMtEntityAdminStatus 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 mplsLdpMtEntityAdminStatus to down, thereby
                                explicitly causing a session to be torn down.  Then, change objects
                                in this entry, then set the mplsLdpMtEntityAdminStatus to enable,
                                which enables a new session to be initiated."
                        ::= { mplsLdpMtEntityEntry 6 }


-- mplsLdpMtEntityStatsTable
                mplsLdpMtEntityStatsTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtEntityStatsEntry
                        MAX-ACCESS not-accessible



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                        STATUS current
                        DESCRIPTION
                                "This table contains statistical information for
                                LDP MT entities to an LSR."
                        ::= { mplsLdpMtEntityObjects 4 }


                mplsLdpMtEntityStatsEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtEntityStatsEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table is created by the LSR for
                                every interface capable of supporting MPLS LDP Multi
                                Topology.  It is an extension to the mplsLdpMtEntityEntry
                                table. Note that the discontinuity behavior of entries
                                in this table MUST be based on the corresponding ifEntry's
                                ifDiscontinuityTime."
                        AUGMENTS { mplsLdpMtEntityEntry }
                        ::= { mplsLdpMtEntityStatsTable 1 }


                MplsLdpMtEntityStatsEntry ::=
                        SEQUENCE {
                                mplsLdpMtEntityStatsOctets
                                        Counter32,
                                mplsLdpMtEntityStatsPackets
                                        Counter32,
                                mplsLdpMtEntityStatsErrors
                                        Counter32,
                                mplsLdpMtEntityStatsDiscards
                                        Counter32,
                                mplsLdpMtEntityStatsHCOctets
                                        Counter64,
                                mplsLdpMtEntityStatsDiscontinuityTime
                                        TimeTicks
                         }

                mplsLdpMtEntityStatsOctets OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "This value represents the total number of octets received
                                by this MT interface. It MUST be equal to the least significant
                                32 bits of mplsLdpMtEntityStatsHCOctets if mplsLdpMtEntityStatsHCOctets
                                is supported according to the rules spelled out in RFC2863."
                        ::= { mplsLdpMtEntityStatsEntry 1 }



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                mplsLdpMtEntityStatsPackets OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "Total number of packets received by this MT interface."
                        ::= { mplsLdpMtEntityStatsEntry 2 }


                mplsLdpMtEntityStatsErrors OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The number of error packets received on this MT interface."
                        ::= { mplsLdpMtEntityStatsEntry 3 }


                mplsLdpMtEntityStatsDiscards OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The number of labeled packets received on this MT interface,
                                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."
                        ::= { mplsLdpMtEntityStatsEntry 4 }


                mplsLdpMtEntityStatsHCOctets OBJECT-TYPE
                        SYNTAX Counter64
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The total number of octets received. This is the 64 bit version
                                of mplsLdpMtEntityStatsOctets, if mplsLdpMtEntityStatsHCOctets
                                is supported according to the rules spelled out in RFC2863."
                        ::= { mplsLdpMtEntityStatsEntry 5 }


                mplsLdpMtEntityStatsDiscontinuityTime OBJECT-TYPE
                        SYNTAX TimeTicks
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The value of sysUpTime on the most recent occasion at which



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                                any one or more of this MT interface'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."
                        ::= { mplsLdpMtEntityStatsEntry 6 }


                mplsLdpMtSessionObjects OBJECT IDENTIFIER ::= { mplsLdpMtObjects 2 }


                mplsLdpMtSessionLastChange 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
                                mplsLdpMtSessionTable."
                        ::= { mplsLdpMtSessionObjects 1 }


-- mplsLdpMtSessionTable
                mplsLdpMtSessionTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtSessionEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "A table of MT Sessions between the LDP MT Entities.  Each row in
                                this table represents a single MT session."
                        ::= { mplsLdpMtSessionObjects 2 }


                mplsLdpMtSessionEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtSessionEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table represents information on a single MT
                                session.  The information contained in a row is read-only."
                        INDEX { mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId, mplsLdpMtEntityIndex,
                                mplsLdpMtSessionPeerId }
                        ::= { mplsLdpMtSessionTable 1 }


                MplsLdpMtSessionEntry ::=
                        SEQUENCE {
                                mplsLdpMtSessionPeerId
                                        MplsLdpIdentifier,



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                                mplsLdpMtSessionState
                                        INTEGER,
                                mplsLdpMtSessionStateLastChange
                                        TimeStamp
                         }

                mplsLdpMtSessionPeerId OBJECT-TYPE
                        SYNTAX MplsLdpIdentifier
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "The LDP identifier of this LDP MT Peer."
                        ::= { mplsLdpMtSessionEntry 1 }

                mplsLdpMtSessionState OBJECT-TYPE
                        SYNTAX INTEGER
                                {
                                initialized(1),
                                operational(2)
                                }
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The current state of the MT Session.  When the tcp
                                connection in default topology is established, and
                                both ends have the capability of the given MT-ID,
                                the state can change from initialized to operational."
                        ::= { mplsLdpMtSessionEntry 2 }


                mplsLdpMtSessionStateLastChange OBJECT-TYPE
                        SYNTAX TimeStamp
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The value of sysUpTime at the time this MT Session was created."
                        ::= { mplsLdpMtSessionEntry 3 }


                mplsLdpMtLspObjects OBJECT IDENTIFIER ::= { mplsLdpMtObjects 3 }


-- mplsLdpMtInSegmentTable
                mplsLdpMtInSegmentTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtInSegmentEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION



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                                "This table contains information about the MPLS Label
                                Distribution Protocol Multi Topology In-Segments which
                                exist on this Label Switching Router (LSR) or Label
                                Edge Router (LER)."
                        ::= { mplsLdpMtLspObjects 1 }


                mplsLdpMtInSegmentEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtInSegmentEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table represents information on a single
                                LDP MT LSP which is represented by a MT session's index
                                combination (mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId,
                                mplsLdpMtEntityIndex, mplsLdpMtSessionPeerId).

                                The information contained in a row is read-only."
                        INDEX { mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId, mplsLdpMtEntityIndex,
                                mplsLdpMtSessionPeerId }
                        ::= { mplsLdpMtInSegmentTable 1 }


                MplsLdpMtInSegmentEntry ::=
                        SEQUENCE {
                                mplsLdpMtInSegmentIndex
                                        MplsIndexType,
                                mplsLdpMtInSegmentLabelType
                                        MplsLdpLabelType,
                                mplsLdpMtInSegmentLspType
                                        MplsLspType
                         }

                mplsLdpMtInSegmentIndex OBJECT-TYPE
                        SYNTAX MplsIndexType
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The index for this MT in-segment. The string containing the
                                single octet 0x00 MUST not be used as an index."
                        ::= { mplsLdpMtInSegmentEntry 1 }


                mplsLdpMtInSegmentLabelType OBJECT-TYPE
                        SYNTAX MplsLdpLabelType
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION



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                                "The Layer 2 Label Type."
                        ::= { mplsLdpMtInSegmentEntry 2 }


                mplsLdpMtInSegmentLspType OBJECT-TYPE
                        SYNTAX MplsLspType
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The type of LSP connection."
                        ::= { mplsLdpMtInSegmentEntry 3 }


-- mplsLdpMtInSegmentStatsTable
                mplsLdpMtInSegmentStatsTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtInSegmentStatsEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "This table contains statistical information for LDP MT
                                in-segments to an LSR."
                        ::= { mplsLdpMtLspObjects 2 }


                mplsLdpMtInSegmentStatsEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtInSegmentStatsEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table contains statistical information
                                about one incoming MT segment which is configured in the
                                mplsLdpMtInSegmentTable. The counters in this entry should
                                behave in a manner similar to that of the MT interface.
                                mplsLdpMtInSegmentStatsDiscontinuityTime indicates the time
                                of the last discontinuity in all of these objects."
                        AUGMENTS { mplsLdpMtInSegmentEntry }
                        ::= { mplsLdpMtInSegmentStatsTable 1 }


                MplsLdpMtInSegmentStatsEntry ::=
                        SEQUENCE {
                                mplsLdpMtInSegmentStatsOctets
                                        Counter32,
                                mplsLdpMtInSegmentStatsPackets
                                        Counter32,
                                mplsLdpMtInSegmentStatsErrors
                                        Counter32,
                                mplsLdpMtInSegmentStatsDiscards



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                                        Counter32,
                                mplsLdpMtInSegmentStatsHCOctets
                                        Counter64,
                                mplsLdpMtInSegmentStatsDiscontinuityTime
                                        TimeTicks
                         }

                mplsLdpMtInSegmentStatsOctets OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "This value represents the total number of octets received
                                by this MT segment. It MUST be equal to the least significant
                                32 bits of mplsLdpMtInSegmentStatsHCOctets if
                                mplsLdpMtInSegmentStatsHCOctets is supported according to
                                the rules spelled out in RFC2863."
                        ::= { mplsLdpMtInSegmentStatsEntry 1 }


                mplsLdpMtInSegmentStatsPackets OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "Total number of packets received by this MT segment."
                        ::= { mplsLdpMtInSegmentStatsEntry 2 }


                mplsLdpMtInSegmentStatsErrors OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The number of error packets received on this MT segment."
                        ::= { mplsLdpMtInSegmentStatsEntry 3 }


                mplsLdpMtInSegmentStatsDiscards OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The number of labeled packets received on this MT 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."



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                        ::= { mplsLdpMtInSegmentStatsEntry 4 }


                mplsLdpMtInSegmentStatsHCOctets OBJECT-TYPE
                        SYNTAX Counter64
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The total number of octets received. This is the 64 bit version
                                of mplsLdpMtInSegmentStatsOctets, if mplsLdpMtInSegmentStatsHCOctets
                                is supported according to the rules spelled out in RFC2863."
                        ::= { mplsLdpMtInSegmentStatsEntry 5 }


                mplsLdpMtInSegmentStatsDiscontinuityTime OBJECT-TYPE
                        SYNTAX TimeTicks
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The value of sysUpTime on the most recent occasion at which
                                any one or more of this MT 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."
                        ::= { mplsLdpMtInSegmentStatsEntry 6 }


-- mplsLdpMtOutSegmentTable
                mplsLdpMtOutSegmentTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtOutSegmentEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "This table contains information about the MPLS Label Distribution
                                Protocol Multi Topology Out-Segments which exist on this Label
                                Switching Router (LSR) or Label Edge Router (LER)."
                        ::= { mplsLdpMtLspObjects 3 }


                mplsLdpMtOutSegmentEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtOutSegmentEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table represents information on a single LDP MT
                                LSP which is represented by a MT session's index combination
                                (mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId, mplsLdpMtEntityIndex,
                                mplsLdpMtSessionPeerId).



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                                The information contained in a row is read-only."
                        INDEX { mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId, mplsLdpMtEntityIndex,
                                mplsLdpMtSessionPeerId }
                        ::= { mplsLdpMtOutSegmentTable 1 }


                MplsLdpMtOutSegmentEntry ::=
                        SEQUENCE {
                                mplsLdpMtOutSegmentIndex
                                        MplsIndexType,
                                mplsLdpMtOutSegmentLabelType
                                        MplsLdpLabelType,
                                mplsLdpMtOutSegmentLspType
                                        MplsLspType
                         }

                mplsLdpMtOutSegmentIndex OBJECT-TYPE
                        SYNTAX MplsIndexType
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The index for this MT out-segment. The string containing
                                the single octet 0x00 MUST not be used as an index."
                        ::= { mplsLdpMtOutSegmentEntry 1 }


                mplsLdpMtOutSegmentLabelType OBJECT-TYPE
                        SYNTAX MplsLdpLabelType
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The Layer 2 Label Type."
                        ::= { mplsLdpMtOutSegmentEntry 2 }


                mplsLdpMtOutSegmentLspType OBJECT-TYPE
                        SYNTAX MplsLspType
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The type of LSP connection."
                        ::= { mplsLdpMtOutSegmentEntry 3 }


-- mplsLdpMtOutSegmentStatsTable
                mplsLdpMtOutSegmentStatsTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtOutSegmentStatsEntry
                        MAX-ACCESS not-accessible



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                        STATUS current
                        DESCRIPTION
                                "This table contains statistical information for
                                LDP MT out-segments to an LSR."
                        ::= { mplsLdpMtLspObjects 4 }


                mplsLdpMtOutSegmentStatsEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtOutSegmentStatsEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "An entry in this table contains statistical information
                                about one incoming MT segment which is configured in the
                                mplsLdpMtOutSegmentTable. The counters in this entry
                                should behave in a manner similar to that of the MT interface.
                                mplsLdpMtOutSegmentStatsDiscontinuityTime indicates the time
                                of the last discontinuity in all of these objects."
                        AUGMENTS { mplsLdpMtOutSegmentEntry }
                        ::= { mplsLdpMtOutSegmentStatsTable 1 }


                MplsLdpMtOutSegmentStatsEntry ::=
                        SEQUENCE {
                                mplsLdpMtOutSegmentStatsOctets
                                        Counter32,
                                mplsLdpMtOutSegmentStatsPackets
                                        Counter32,
                                mplsLdpMtOutSegmentStatsErrors
                                        Counter32,
                                mplsLdpMtOutSegmentStatsDiscards
                                        Counter32,
                                mplsLdpMtOutSegmentStatsHCOctets
                                        Counter64,
                                mplsLdpMtOutSegmentStatsDiscontinuityTime
                                        TimeTicks
                         }

                mplsLdpMtOutSegmentStatsOctets OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "This value represents the total number of octets received by
                                this MT segment. It MUST be equal to the least significant 32 bits
                                of mplsLdpMtOutSegmentStatsHCOctets if mplsLdpMtOutSegmentStatsHCOctets
                                is supported according to the rules spelled out in RFC2863."
                        ::= { mplsLdpMtOutSegmentStatsEntry 1 }



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                mplsLdpMtOutSegmentStatsPackets OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "Total number of packets received by this MT segment."
                        ::= { mplsLdpMtOutSegmentStatsEntry 2 }


                mplsLdpMtOutSegmentStatsErrors OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The number of error packets received on this MT segment."
                        ::= { mplsLdpMtOutSegmentStatsEntry 3 }


                mplsLdpMtOutSegmentStatsDiscards OBJECT-TYPE
                        SYNTAX Counter32
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The number of labeled packets received on this MT 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."
                        ::= { mplsLdpMtOutSegmentStatsEntry 4 }


                mplsLdpMtOutSegmentStatsHCOctets OBJECT-TYPE
                        SYNTAX Counter64
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The total number of octets received. This is the 64 bit version
                                of mplsLdpMtOutSegmentStatsOctets, if mplsLdpMtOutSegmentStatsHCOctets
                                is supported according to the rules spelled out in RFC2863."
                        ::= { mplsLdpMtOutSegmentStatsEntry 5 }


                mplsLdpMtOutSegmentStatsDiscontinuityTime OBJECT-TYPE
                        SYNTAX TimeTicks
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "The value of sysUpTime on the most recent occasion at which any



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                                one or more of this MT 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."
                        ::= { mplsLdpMtOutSegmentStatsEntry 6 }


                mplsLdpMtLspLastChange 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 mplsLdpMtLspTable, or the
                                most recent change in value of any objects in the mplsLdpMtLspTable.

                                If no such changes have occurred since the last re-initialization
                                of the local management subsystem, then this object contains a zero value."
                        ::= { mplsLdpMtLspObjects 5 }


                mplsLdpMtLspIndexNext OBJECT-TYPE
                        SYNTAX IndexIntegerNextFree
                        MAX-ACCESS read-only
                        STATUS current
                        DESCRIPTION
                                "This object contains an appropriate value to be used for
                                mplsLdpMtLspIndex when creating entries in the mplsLdpMtLspTable.
                                The value 0 indicates that no unassigned entries are available."
                        ::= { mplsLdpMtLspObjects 6 }


-- mplsLdpMtLspTable
                mplsLdpMtLspTable OBJECT-TYPE
                        SYNTAX SEQUENCE OF MplsLdpMtLspEntry
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "This table specifies MT LIB label switching information. Entries in
                                this table define LIB label switching entries associated with the
                                specified topology."
                        ::= { mplsLdpMtLspObjects 7 }


                mplsLdpMtLspEntry OBJECT-TYPE
                        SYNTAX MplsLdpMtLspEntry
                        MAX-ACCESS not-accessible
                        STATUS current



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                        DESCRIPTION
                                "An entry in this table is created by an LSR for every label within
                                the context of a specific topology capable of supporting MT LDP LSP.
                                The indexing provides an ordering of topologies per interface."
                        INDEX { mplsLdpMtEntityLdpId, mplsLdpMtEntityMtId, mplsLdpMtEntityIndex,
                                mplsLdpMtLspInSegmentIndex, mplsLdpMtLspOutSegmentIndex,
                                mplsLdpMtLspIndex }
                        ::= { mplsLdpMtLspTable 1 }


                MplsLdpMtLspEntry ::=
                        SEQUENCE {
                                mplsLdpMtLspIndex
                                        IndexInteger,
                                mplsLdpMtLspFecAddr
                                        InetAddress,
                                mplsLdpMtLspFecAddrLength
                                        InetAddressPrefixLength,
                                mplsLdpMtLspInSegmentIndex
                                        MplsIndexType,
                                mplsLdpMtLspOutSegmentIndex
                                        MplsIndexType,
                                mplsLdpMtLspRowStatus
                                        Integer32,
                                mplsLdpMtLspStorageType
                                        StorageType,
                                mplsLdpMtLspOperStatus
                                        RowStatus
                         }

                mplsLdpMtLspIndex OBJECT-TYPE
                        SYNTAX IndexInteger
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "The index which uniquely identifies this entry."
                        ::= { mplsLdpMtLspEntry 1 }


                mplsLdpMtLspFecAddr OBJECT-TYPE
                        SYNTAX InetAddress
                        MAX-ACCESS read-create
                        STATUS current
                        DESCRIPTION
                                "The FEC address of this LDP MT LSP. Note that the
                                value of this object is interpreted as prefix address."
                        REFERENCE
                                "RFC 5036, Section 3.4.1 FEC TLV."



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                        ::= { mplsLdpMtLspEntry 2 }


                mplsLdpMtLspFecAddrLength OBJECT-TYPE
                        SYNTAX InetAddressPrefixLength
                        MAX-ACCESS read-create
                        STATUS current
                        DESCRIPTION
                                "The FEC prefix length of this LDP MT LSP."
                        REFERENCE
                                "RFC5036, Section 3.4.1. FEC TLV"
                        ::= { mplsLdpMtLspEntry 3 }


                mplsLdpMtLspInSegmentIndex OBJECT-TYPE
                        SYNTAX MplsIndexType
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "Index of in-segment for this LDP MT LSP."
                        ::= { mplsLdpMtLspEntry 4 }


                mplsLdpMtLspOutSegmentIndex OBJECT-TYPE
                        SYNTAX MplsIndexType
                        MAX-ACCESS not-accessible
                        STATUS current
                        DESCRIPTION
                                "Index of out-segment for this LDP MT LSP."
                        ::= { mplsLdpMtLspEntry 5 }


                mplsLdpMtLspRowStatus OBJECT-TYPE
                        SYNTAX Integer32
                        MAX-ACCESS read-create
                        STATUS current
                        DESCRIPTION
                                "For creating, modifying, and deleting this row.
                                When a row in this table has a row in the active(1)
                                state, no objects in this row except this object
                                and the mplsLdpMtLspStorageType can be modified."
                        ::= { mplsLdpMtLspEntry 6 }


                mplsLdpMtLspStorageType OBJECT-TYPE
                        SYNTAX StorageType
                        MAX-ACCESS read-create
                        STATUS current



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                        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 }
                        ::= { mplsLdpMtLspEntry 7 }


                mplsLdpMtLspOperStatus 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."
                        ::= { mplsLdpMtLspEntry 8 }


                mplsLdpMtConformance OBJECT IDENTIFIER ::= { mplsLdpMtStdMIB 2 }


                mplsLdpMtGroups OBJECT IDENTIFIER ::= { mplsLdpMtConformance 1 }


                mplsLdpMtEntityGroup OBJECT-GROUP
                        OBJECTS { mplsLpMtEntityLastChange, mplsLdpMtEntityIndexNext, mplsLdpMtEntityMtId,
                                  mplsLdpMtEntityAdminStatus, mplsLdpMtEntityStorageType,
                                  mplsLdpMtEntityRowStatus, mplsLdpMtEntityStatsDiscontinuityTime,
                                  mplsLdpMtEntityStatsHCOctets, mplsLdpMtEntityStatsDiscards,
                                  mplsLdpMtEntityStatsErrors, mplsLdpMtEntityStatsPackets,
                                  mplsLdpMtEntityStatsOctets }
                        STATUS current
                        DESCRIPTION
                                "Objects that apply to all MPLS LDP MT Entity implementations."
                        ::= { mplsLdpMtGroups 2 }


                mplsLdpMtSessionGroup OBJECT-GROUP
                        OBJECTS { mplsLdpMtSessionLastChange, mplsLdpMtSessionState, mplsLdpMtSessionStateLastChange }
                        STATUS current
                        DESCRIPTION



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                                "Objects that apply to all MPLS LDP MT Session implementations."
                        ::= { mplsLdpMtGroups 3 }


                mplsLdpMtLspGroup OBJECT-GROUP
                        OBJECTS { mplsLdpMtLspLastChange, mplsLdpMtLspIndexNext, mplsLdpMtLspFecAddr,
                                  mplsLdpMtLspFecAddrLength, mplsLdpMtLspRowStatus,
                                  mplsLdpMtLspStorageType, mplsLdpMtLspOperStatus,
                                  mplsLdpMtInSegmentIndex, mplsLdpMtInSegmentLabelType,
                                  mplsLdpMtInSegmentLspType, mplsLdpMtInSegmentStatsOctets,
                                  mplsLdpMtInSegmentStatsPackets, mplsLdpMtInSegmentStatsErrors,
                                  mplsLdpMtInSegmentStatsDiscards, mplsLdpMtInSegmentStatsHCOctets,
                                  mplsLdpMtInSegmentStatsDiscontinuityTime, mplsLdpMtOutSegmentIndex,
                                  mplsLdpMtOutSegmentLabelType, mplsLdpMtOutSegmentLspType,
                                  mplsLdpMtOutSegmentStatsOctets, mplsLdpMtOutSegmentStatsPackets,
                                  mplsLdpMtOutSegmentStatsErrors, mplsLdpMtOutSegmentStatsDiscards,
                                  mplsLdpMtOutSegmentStatsHCOctets, mplsLdpMtOutSegmentStatsDiscontinuityTime
                                 }
                        STATUS current
                        DESCRIPTION
                                "Objects that apply to all MPLS LDP MT LSP implementations."
                        ::= { mplsLdpMtGroups 4 }


                mplsLdpMtNotificationGroup NOTIFICATION-GROUP
                        NOTIFICATIONS { mplsLdpMtLspUp, mplsLdpMtLspDown }
                        STATUS current
                        DESCRIPTION
                                "The notifications for an MPLS LDP MT implementation."
                        ::= { mplsLdpMtGroups 5 }


                mplsLdpMtCompliances OBJECT IDENTIFIER ::= { mplsLdpMtConformance 2 }


                mplsLdpMtModuleFullCompliance MODULE-COMPLIANCE
                        STATUS current
                        DESCRIPTION
                                "The Module is implemented with support
                                for read-create and read-write.  In other
                                words, both monitoring and configuration
                                are available when using this MODULE-COMPLIANCE."
                        MODULE -- this module
                                MANDATORY-GROUPS { mplsLdpMtEntityGroup, mplsLdpMtSessionGroup,
                                                   mplsLdpMtLspGroup, mplsLdpMtNotificationGroup }
                        ::= { mplsLdpMtCompliances 1 }





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                mplsLdpMtModuleReadOnlyCompliance 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 { mplsLdpMtEntityGroup, mplsLdpMtSessionGroup,
                                                   mplsLdpMtLspGroup, mplsLdpMtNotificationGroup }
                        ::= { mplsLdpMtCompliances 2 }



        END



5.  Security Considerations

   It needs to be further identified.


6.  IANA Considerations

   There is no necessary to request new IANA code in the draft.


7.  Normative References

   [RFC3813]  Srinivasan, C., Viswanathan, A., and T. Nadeau,
              "Multiprotocol Label Switching (MPLS) Label Switching
              Router (LSR) Management Information Base (MIB)", RFC 3813,
              June 2004.

   [RFC3814]  Nadeau, T., Srinivasan, C., and A. Viswanathan,
              "Multiprotocol Label Switching (MPLS) Forwarding
              Equivalence Class To Next Hop Label Forwarding Entry (FEC-
              To-NHLFE) Management Information Base (MIB)", RFC 3814,
              June 2004.

   [RFC3815]  Cucchiara, J., Sjostrand, H., and J. Luciani, "Definitions
              of Managed Objects for the Multiprotocol Label Switching
              (MPLS), Label Distribution Protocol (LDP)", RFC 3815,
              June 2004.

   [RFC5036]  Andersson, L., Minei, I., and B. Thomas, "LDP
              Specification", RFC 5036, October 2007.




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   [RFC3410]  Case, J., Mundy, R., Partain, D., and B. Stewart,
              "Introduction and Applicability Statements for Internet-
              Standard Management Framework", RFC 3410, December 2002.

   [I-D.ietf-mpls-ldp-multi-topology]
              Zhao, Q., Fang, L., Zhou, C., Li, L., and N. So, "LDP
              Extensions for Multi Topology Routing",
              draft-ietf-mpls-ldp-multi-topology-03 (work in progress),
              March 2012.


Authors' Addresses

   Chen Li
   China Mobile
   Unit2, Dacheng Plaza, No. 28 Xuanwumenxi Ave, Xuanwu District
   Beijing  100053
   P.R. China

   Email: lichenyj@chinamobile.com


   Lianyuan Li
   China Mobile
   Unit2, Dacheng Plaza, No. 28 Xuanwumenxi Ave, Xuanwu District
   Beijing  100053
   P.R. China

   Email: lilianyuan@chinamobile.com


   Lu Huang
   China Mobile
   Unit2, Dacheng Plaza, No. 28 Xuanwumenxi Ave, Xuanwu District
   Xunwu District, Beijing  100053
   China

   Email: huanglu@chinamobile.com


   Emily Chen
   Huawei Technologies
   2330 Central Expressway
   Santa Clara, CA  95050
   US

   Email: emily.chenying@huawei.com




Li, et al.              Expires December 29, 2012              [Page 29]


Internet-Draft             MIB for MPLS LDP MT                 June 2012


   Quintin Zhao
   Huawei Technologies
   125 Nagog Technology Park
   Acton, MA  01719
   US

   Email: quintin.zhao@huawei.com












































Li, et al.              Expires December 29, 2012              [Page 30]