Network Working Group                                       J. Cucchiara
Internet-Draft                                       IronBridge Networks
Expires March April 2000                                          H. Sjostrand
                                                                Ericsson
                                                              J. Luciani
                                                         Nortel Networks
                                                            October 1999

                   Definitions of Managed Objects for
 the Multiprotocol Label Switching, Label Distribution Protocol (LDP)

                    <draft-ietf-mpls-ldp-mib-02.txt>

                    <draft-ietf-mpls-ldp-mib-03.txt>

Status of this Memo

   This document is an Internet-Draft and is in full conformance with
   all provisions of Section 10 of RFC 2026.  Internet-Drafts are
   working documents of the Internet Engineering Task Force (IETF), its
   areas, and its working groups.  Note that other groups may also
   distribute working documents as Internet-Drafts.

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

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed at
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   Distribution of this document is unlimited. Please send comments to
   the Multiprotocol Label Switching (mpls) Working Group,
   <mpls@uu.net>.

Copyright Notice

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

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 .................................................    3
   2 The SNMP Management Framework ................................    3
   3 Structure of the MIB .........................................    5
   3.1 Overview ...................................................    5
   3.2 Interface Indexing .........................................    5
   3.3 Future Considerations ......................................    5
   3.4 Discussion of MIB Groups ...................................    6
   3.5 The MPLS LDP General Group .................................    6
   3.5.1 The Label Distribution Protocol's Entity Table ...........    6
   3.5.2 The Label Distribution Protocol's Entity ATM Objects .....    6
        Objects ...................................................    6
        Table .....................................................    7
   3.5.5 The LDP Peer Table .......................................    7
   3.5.6 The LDP Session Table ....................................    7
   3.5.7 The LDP ATM Session Table ................................    7
   3.5.8 The LDP Frame Relay Session Table ........................    7
   3.5.9 The LDP Session Statistics Table .........................    7
   3.5.10 The LDP Session Peer Address Table ......................    8
   3.5.11 The LDP Adjacencies Table ...............................    8
   3.5.12 The LDP Label Information Base (LIB) Table ..............    8
   3.5.13 The LDP FEC Table .......................................    8
   3.6 The LDP Notifications Group ................................    8
   3.6.1 LDP Notifications ........................................    8
   4 MPLS Label Distribution Protocol MIB Definitions .............    8
   5 Revision History .............................................   45   49
   5.1 Changes from <draft-ietf-mpls-ldp-mib-01.txt> <draft-ietf-mpls-ldp-mib-02.txt> ..............   45   49
   5.2 Changes from <draft-ietf-mpls-ldp-mib-01.txt> ..............   49
   5.3 Changes from <draft-ietf-mpls-ldp-mib-00.txt> ..............   46   50
   6 TO DO List ...................................................   47   51
   7 Acknowledgments ..............................................   47   51
   8 References ...................................................   48   52
   9 Security Considerations ......................................   50   54
   10 Authors' Addresses ..........................................   50   54
   11 Full Copyright Statement ....................................   51   55
   12 IANA Address Family Numbers MIB .............................   51   55

1.  Introduction

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects for the Multiprotocol
   Label Switching, Label Distribution Protocol (LDP) [18].

   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 [22].

2.  The SNMP Management Framework

   The SNMP Management Framework presently consists of five major
   components:

    o   An overall architecture, described in RFC 2571 [RFC2571].

    o   Mechanisms for describing and naming objects and events for the
        purpose of management. The first version of this Structure of
        Management Information (SMI) is called SMIv1 and described in
        STD 16, RFC 1155 [RFC1155], STD 16, RFC 1212 [RFC1212] and RFC
        1215 [RFC1215]. The second version, called SMIv2, is described
        in STD 58, RFC 2578 [RFC2578], RFC 2579 [RFC2579] and RFC 2580
        [RFC2580].

    o   Message protocols for transferring management information. The
        first version of the SNMP message protocol is called SNMPv1 and
        described in STD 15, RFC 1157 [RFC1157]. A second version of the
        SNMP message protocol, which is not an Internet standards track
        protocol, is called SNMPv2c and described in RFC 1901 [RFC1901]
        and RFC 1906 [RFC1906]. The third version of the message
        protocol is called SNMPv3 and described in RFC 1906 [RFC1906],
        RFC 2572 [RFC2572] and RFC 2574 [RFC2574].

    o   Protocol operations for accessing management information. The
        first set of protocol operations and associated PDU formats is
        described in STD 15, RFC 1157 [RFC1157]. A second set of
        protocol operations and associated PDU formats is described in
        RFC 1905 [RFC1905].

    o   A set of fundamental applications described in RFC 2573
        [RFC2573] and the view-based access control mechanism described
        in RFC 2575 [RFC2575].

   A more detailed introduction to the current SNMP Management Framework
   can be found in RFC 2570 [RFC2570].

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

   This memo specifies a MIB module that is compliant to the SMIv2. A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations. The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64). Some machine readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process. However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

3.  Structure of the MIB

   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) as defined in
   [18].

3.1.  Overview

   The MIB provides objects to configure/set-up potential LDP sessions
   on a specific LSR.  A table is used to configure potential LDP
   Sessions, where each row in the table initiates an LDP Session.  This
   is the mplsLdpEntityTable.

   Another table, the mplsLdpPeerTable, is a read-only table which
   records information learned via discovery.  Each row in the Peer
   Table represents a peer.

   A third table is used to show the actual sessions which have been, or
   are in the process of being established.  Each row represents a
   specific session between an Entity (on this LSR) and a peer.  The
   following figure demonstrates these relationships:

         Entity                                          Peer
      ------------                                   ------------
      |          |                                   |           |
      ------------                                   -------------
      |          |          --------------           |           |
      ------------  ----->  |            |  <-----   ------------
                            --------------
                               Session

3.2.  Interface Indexing

   Interface Indexes as specified in [29] are used in the MIB.  The
   descriptions of the ifIndexes denote which ifIndex is being used.
   NOTE:  the use of ifIndex is for actual existing connections.

3.3.  Future Considerations

   The following aspects are not addressed in this document:  VPN issues
   (i.e. potential MIB objects such as the VPN Identifier are not
   included at this time), and lastly, multicast issues are not
   discussed.

   Some of these issues need further clarification before adding to the
   MIB.

3.4.  Discussion of MIB Groups

   Currently, there are four groups: the MPLS LDP General Group, the
   MPLS LDP ATM Group, the MPLS LDP Frame Relay Group and the MPLS LDP
   Notifications Group.  The MPLS LDP General Group and the MPLS LDP
   Notifications Group should always be supported.  The MPLS LDP ATM
   Group is specific to ATM and should be supported only if LDP is using
   ATM.  Likewise, the MPLS LDP Frame Relay group is specific to Frame
   Relay and should be supported only if LDP is using Frame Relay.

3.5.  The MPLS LDP General Group

   This group contains information about the specific LDP Entities which
   are associated with this agent. Each LSR must have one LDP Entity.

3.5.1.  The Label Distribution Protocol's Entity Table

   The LDP Entity Table provides a way to configure the LSR for using
   LDP.  There must be at least one LDP Entity for the LSR to support
   LDP.

   Each entry/row in this table represents a single LDP Entity.

3.5.2.  The Label Distribution Protocol's Entity ATM Objects

   There exists two tables to configure LDP for using ATM.  These tables
   are the mplsLdpEntityAtmParmsTable and the
   mplsLdpEntityConfAtmLabelRangeTable.

   The mplsLdpEntityAtmParmsTable provides a way to configure
   information which would be contained in the 'Optional Paramer'
   portion of an LDP PDU Initialization Message.

   The mplsLdpEntityConfAtmLabelRangeTable provides a way to configure
   information which would be contained in the 'ATM Label Range
   Components' portion of an LDP PDU Intialization Message.

3.5.3.  The Label Distribution Protocol's Entity Frame Relay Objects

   There exists two tables to configure LDP for using Frame Relay.
   These tables are the mplsLdpEntityFrameRelayParmsTable and the
   mplsLdpEntityConfFrLabelRangeTable.

   The mplsLdpEntityFrameRelayParmsTable provides a way to configure
   information which would be contained in the 'Optional Paramer'
   portion of an LDP PDU Initialization Message.

   The mplsLdpEntityConfFrLabelRangeTable provides a way to configure
   information which would be contained in the portion of an LDP PDU
   Intialization Message.

3.5.4.  The Label Distribution Protocol's Entity Statistics Table

   The LDP Entity Statistics Table will maintain counters related to an
   LDP Entity.  This Table should be a read-only table which contains
   statistical information.

   Each row in this table will be related to a single LDP Entity.

3.5.5.  The LDP Peer Table

   The LDP Peer Table is a read-only table which contains information
   about LDP Peers.  Each row in this table represents an LDP Peer which
   is known to an LDP Entity.

3.5.6.  The LDP Session Table

   The LDP Session Table is a read-only table.  Each entry in this table
   represents a single session between an LDP Entity and a Peer.

3.5.7.  The LDP ATM Session Table

   The MPLS LDP ATM Session Table is a read-only table which contains
   session information specific to ATM.

3.5.8.  The LDP Frame Relay Session Table

   The MPLS LDP Frame Relay Session Table is a read-only table which
   contains session information specific to Frame Relay.

3.5.9.  The LDP Session Statistics Table

   The MPLS LDP Session Stats Table is a read-only table which contains
   statistical information on sessions.

3.5.10.  The LDP Session Peer Address Table

   The MPLS LDP Session Peer Address Table 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.

3.5.11.  The LDP Adjacencies Table

   This is a table of all adjacencies between all LPD Entities and all
   LDP Peers.  A Session may have one or more adjacencies.

3.5.12.  The LDP Label Information Base (LIB) Table

   The MPLS LDP LIB Table is a read-only table which contains
   information stored in the LIB.  This table is indexed by a unique
   number which could be used to represent the LSP segment related to
   this LIB entry.  The Lsp number corresponds to a FEC entry in the FEC
   Table which is described next.

3.5.13.  The LDP FEC Table

   The FEC Table is a read-only table whic contains FEC (Forwarding
   Equivalence Class) information.  Each entry/row represents a single
   FEC Element.

3.6.  The LDP Notifications Group

3.6.1.  LDP Notifications

   Currently, there is one notification which will be sent when an LDP
   attempts to initialize the same session beyond the configured
   threshold.

4.  MPLS Label Distribution Protocol MIB Definitions

     MPLS-LDP-MIB DEFINITIONS ::= BEGIN

     IMPORTS
         OBJECT-TYPE, MODULE-IDENTITY, NOTIFICATION-TYPE,
         experimental,
         Integer32, Counter32, Unsigned32
             FROM SNMPv2-SMI
         MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
             FROM SNMPv2-CONF

         TEXTUAL-CONVENTION, RowStatus, TimeInterval TimeInterval, TruthValue
             FROM SNMPv2-TC
         InterfaceIndex
             FROM IF-MIB
         -- AtmInterfaceType,
         AtmVcIdentifier, AtmVpIdentifier
         FROM ATM-TC-MIB
         AddressFamilyNumbers
             FROM IANA-ADDRESS-FAMILY-NUMBERS-MIB
         ;

     mplsLdpMIB MODULE-IDENTITY
         LAST-UPDATED "9910071200Z" "9910211200Z"  -- October 7, 21, 1999
         ORGANIZATION "Multiprotocol Label Switching (mpls) Working Group"
         CONTACT-INFO
             "Joan Cucchiara (joan@ironbridgenetworks.com)
              IronBridge Networks

              Hans Sjostrand (hans.sjostrand@etx.ericsson.se)
              Ericsson

              James V. Luciani (luciani@baynetworks.com)
              Nortel Networks"
         DESCRIPTION
             "This MIB contains managed object definitions for the
             Multiprotocol Label Switching, Label Distribution
             Protocol, LDP, as defined in draft-ietf-mpls-ldp-06.txt."
         ::= { experimental XXXX } -- to be assigned

     --********************************************************************
     -- MPLS LDP Textual Conventions
     --********************************************************************
     --

     MplsLsrIdentifier ::= TEXTUAL-CONVENTION
         STATUS      current
         DESCRIPTION
             "The Label Switch Router (LSR) identifier
             is the first 4 bytes or the IP Address component
             of the Label Distribution Protocol (LDP) identifier."
         SYNTAX      OCTET STRING (SIZE (4))

     --
     -- A similar TC is also used in RFC2677.txt, perhaps
     -- this should be made general and not MPLS specific.
     --
     MplsLdpGenAddr ::= TEXTUAL-CONVENTION
         STATUS      current
         DESCRIPTION
             "The value of an network layer or data link layer address."
         SYNTAX      OCTET STRING (SIZE (0..64))

     MplsLdpIdentifier ::= TEXTUAL-CONVENTION
         STATUS      current
         DESCRIPTION
             "The LDP identifier is a six octet quantity
             which is used to identify an Label Switch Router
             (LSR) label space.

             The first four octets encode an IP address
             assigned to the LSR, and the last two octets
             identify a specific label space within the LSR."
         SYNTAX      OCTET STRING (SIZE (6))

     MplsLdpLabelTypes ::= TEXTUAL-CONVENTION
         STATUS      current
         DESCRIPTION
             "The Layer 2 label types which are defined for
             MPLS LDP are generic(1), atm(2), or frameRelay(3)."
         SYNTAX              INTEGER(1..3)

     -- Top-level structure of the MIB (the following is proposed)
     mpls                 OBJECT IDENTIFIER ::= { mplsProtocols }

     mplsProtocols        OBJECT IDENTIFIER ::= { mplsLdpObjects }
     -- under mplsProtocols will be LDP, CR-LDP,
     --       and other MPLS "Protocols".

     mplsLdpObjects       OBJECT IDENTIFIER ::= { mplsLdpMIB 1 }
     mplsLdpNotifications OBJECT IDENTIFIER ::= { mplsLdpMIB 2 }
     mplsLdpConformance   OBJECT IDENTIFIER ::= { mplsLdpMIB 3 }

     --****************************************************************
     -- MPLS LDP Objects
     --****************************************************************

     mplsLdpLsrObjects    OBJECT IDENTIFIER ::= { mplsLdpObjects 1 }

     mplsLdpEntityObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 2 }

     --
     -- The MPLS Label Distribution Protocol Label Switch Router Objects
     --

     mplsLdpLsrId OBJECT-TYPE
         SYNTAX      MplsLsrIdentifier
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The LSR's Identifier."
         ::= { mplsLdpLsrObjects 1 }

     mplsLdpLsrLabelRetentionMode OBJECT-TYPE
         SYNTAX      INTEGER {
                         conservative(1),
                         liberal(2)
                     }
         MAX-ACCESS  read-write
         STATUS      current
         DESCRIPTION
             "The LSR 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."
         ::= { mplsLdpLsrObjects 2 }

     mplsLdpLsrLoopDetectionCapable OBJECT-TYPE
         SYNTAX      TruthValue
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "A indication of whether this LSR supports
             loop detection.  A value of 'true' indicates
             this LSR does support loop detection.  A value
             of 'false' indicates this LSR does not support
             loop detection.  Since Loop Detection is determined
             during Session Initialization, an individual session
             may not be running with loop detection enabled.  This
             object simply gives an indication of whether or not the
             LSR has the ability to support Loop Detection."
         ::= { mplsLdpLsrObjects 3 }

     --
     -- The MPLS Label Distribution Protocol Entity Table Objects
     --
     mplsLdpEntityIndexNext  OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295)
         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. To obtain the mplsLdpEntityIndex
             value for a new entry, the manager issues a
             management protocol retrieval operation to obtain
             the current value of this object.  After each
             retrieval, the agent should modify the value to
             the next unassigned index."
        ::= { mplsLdpEntityObjects 1 }

     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 Switch Router (LSR)."
         ::= { mplsLdpEntityObjects 1 2 }

     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                         Unsigned32,
         mplsLdpEntityProtocolVersion               Integer32,
         mplsLdpEntityAdminStatus                   INTEGER,
         mplsLdpEntityOperStatus                    INTEGER,
         mplsLdpEntityWellKnownDiscoveryPort        Unsigned32,
         mplsLdpEntityMtu                           Integer32,
         mplsLdpEntityKeepAliveHoldTimer            Integer32,
         mplsLdpEntityHelloHoldTimer                Integer32,
         mplsLdpEntityFailedInitSessionThreshold    Integer32,
         mplsLdpEntityLabelDistributionMethod       INTEGER,
         mplsLdpEntityTargetedPeer                  TruthValue,
         mplsLdpEntityTargetedPeerAddrType          AddressFamilyNumbers,
         mplsLdpEntityTargetedPeerAddr              MplsLdpGenAddr,
         mplsLdpEntityOptionalParameters            MplsLdpLabelTypes,
         mplsLdpEntityRowStatus                     RowStatus
     }

     mplsLdpEntityLdpId OBJECT-TYPE
         SYNTAX      MplsLdpIdentifier
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "The LDP identifier.

             The first four octets encode an IP address
             assigned to the LSR, and the last two octets
             identify a specific label space within the
             LSR."
         REFERENCE
             "LDP Specification, Section on LDP Identifiers."
         ::= { mplsLdpEntityEntry 1 }

     mplsLdpEntityIndex OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This index should be unique to differentiate
             LDP Identifiers, such that this is used as a secondary index along
             with the LDP Identifier will 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 row." 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."
         ::= { mplsLdpEntityEntry 2 }

     mplsLdpEntityWellKnownDiscoveryPort OBJECT-TYPE
         SYNTAX      Unsigned32
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The well known LDP Discovery Port."
         ::= { mplsLdpEntityEntry 3 }
     mplsLdpEntityMtu

     mplsLdpEntityProtocolVersion OBJECT-TYPE
         SYNTAX      Integer32 (0..65535)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
            "The maximum transmission unit (MTU) that was configured version number of the protocol.  The value of 0 on a
            read indicates that the version of the protocol is unknown.
            Otherwise, the value of this object represents the version
            of the LDP protocol."
         ::= { 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."
         DEFVAL  { enable }
         ::= { mplsLdpEntityEntry 4 }

     mplsLdpEntityOperStatus OBJECT-TYPE
         SYNTAX      INTEGER {
                       unknown(0),
                       enabled(1),
                       disabled(2)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The operational status of this LDP Entity."
         ::= { mplsLdpEntityEntry 5 }

     mplsLdpEntityWellKnownDiscoveryPort OBJECT-TYPE
         SYNTAX      Unsigned32
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The well known LDP Discovery Port."
         ::= { mplsLdpEntityEntry 6 }

     mplsLdpEntityMtu OBJECT-TYPE
         SYNTAX      Integer32 (0..65535)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The maximum transmission unit (MTU) that was configured
             for this entity."
         ::= { mplsLdpEntityEntry 4 7 }

     mplsLdpEntityKeepAliveHoldTimer OBJECT-TYPE
         SYNTAX      Integer32 (1..65535)
         UNITS       "seconds"
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The two octet value which is the proposed keep alive hold
             timer for this LDP Entity."
         ::= { mplsLdpEntityEntry 5 8 }
     mplsLdpEntityHelloHoldTimer OBJECT-TYPE
         SYNTAX      Integer32 (0..65535)
         UNITS       "seconds"
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The two octet value which is the proposed Hello hold
             timer for this LDP Entity. A value of 0 means use the default,
             which is 15 seconds for Link Hellos and 45 seconds for Targeted
             Hellos.  A value of 65535 means infinite."
         DEFVAL { 0 }
         ::= { mplsLdpEntityEntry 9 }

     mplsLdpEntityFailedInitSessionThreshold OBJECT-TYPE
         SYNTAX      Integer32
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "When attempting to establish a session with a
             given Peer, the given LDP Entity should
             send out a notification when exceeding this threshold.
             A value of 0 (zero) for this object
             indicates that the threshold is infinity.
             In other words, a notification will not
             be sent if the value of this object is 0 (zero)."
         ::= { mplsLdpEntityEntry 6 10 }

     mplsLdpEntityLabelDistributionMethod OBJECT-TYPE
         SYNTAX      INTEGER {
                        downstreamOnDemand(1),
                        downstreamUnsolicited(2)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "For any given LDP session, the method of
             label distribution must be specified."
         ::= { mplsLdpEntityEntry 7 11 }

     mplsLdpEntityTargetedPeer 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 12 }

     mplsLdpEntityTargetedPeerAddrType OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers
         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
             mplsLdpEntityTargetedPeerAddr is to be interpreted."
         ::= { mplsLdpEntityEntry 13 }

     mplsLdpEntityTargetedPeerAddr OBJECT-TYPE
         SYNTAX      MplsLdpGenAddr
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The value of the internetwork layer address used for
             the Extended Discovery."
        ::= { mplsLdpEntityEntry 14 }

     mplsLdpEntityOptionalParameters OBJECT-TYPE
         SYNTAX      MplsLdpLabelTypes
         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 mplsLdpEntityAtmParms
             Table, which corresponds to this entry.

             If the value is frameRelayParameters(3) then
             a row must be created in the mplsLdpEntityFrameRelayParms
             Table, which corresponds to this entry."
         ::= { mplsLdpEntityEntry 8 15 }

     mplsLdpEntityRowStatus OBJECT-TYPE
         SYNTAX      RowStatus
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "An object that allows entries in this table to
                  be created and deleted using the
                  RowStatus convention."
         ::= { mplsLdpEntityEntry 9 16 }

     --
     -- Ldp Entity Objects for ATM
     --

     mplsLdpEntityAtmObjects  OBJECT IDENTIFIER ::= { mplsLdpEntityObjects 2 3
}

     mplsLdpEntityAtmParmsTable  OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpEntityAtmParmsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table contains information about the
             ATM specific information which could be used
             in the 'Optional Parameters'." Parameters' and other ATM specific
             information."
         ::= { mplsLdpEntityAtmObjects 1 }

     mplsLdpEntityAtmParmsEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityAtmParmsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table represents the ATM parameters
             and ATM information for this LDP entity."
         INDEX       {  mplsLdpEntityLdpId, mplsLdpEntityIndex  }
         ::= { mplsLdpEntityAtmParmsTable 1 }

     MplsLdpEntityAtmParmsEntry ::= SEQUENCE {
         mplsLdpEntityAtmMergeCap                   INTEGER,
         mplsLdpEntityAtmLabelRangeComponents       Unsigned32,
         mplsLdpEntityAtmVcDirectionality           INTEGER,
         mplsLdpEntityAtmLsrConnectivity            INTEGER,
         mplsLdpEntityDefaultControlVpi             AtmVpIdentifier,
         mplsLdpEntityDefaultControlVci             AtmVcIdentifier,
         mplsLdpEntityUnlabTrafVpi                  AtmVpIdentifier,
         mplsLdpEntityUnlabTrafVci                  AtmVcIdentifier,
         mplsLdpEntityAtmRowStatus                  RowStatus
     }

     mplsLdpEntityAtmMergeCap OBJECT-TYPE
         SYNTAX      INTEGER {
                         notSupported(0),
                         vpMerge(1),
                         vcMerge(2),
                         vpAndVcMerge(3)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "Denotes the Merge Capability of this Entity."
         ::= { mplsLdpEntityAtmParmsEntry 1 }

     mplsLdpEntityAtmLabelRangeComponents OBJECT-TYPE
         SYNTAX      Unsigned32 (1..65535)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "Number of LabelRange Components in the Initialization
             message.  This also represents the number of entries
             in the mplsLdpLabelRangeComponentsTable which correspond
             to this entry."
         ::= { mplsLdpEntityAtmParmsEntry 2 }

     mplsLdpEntityAtmVcDirectionality OBJECT-TYPE
         SYNTAX      INTEGER {
                                bidirectional(0),
                                unidirectional(1)
                             }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "If the value of this object is 'bidirectional(0)',
             a given VCI, within a given VPI, is used as a
             label for both directions independently.

             If the value of this object is 'unidirectional(1)',
             a given VCI within a VPI designates one direction."
         ::= { mplsLdpEntityAtmParmsEntry 3 }

     mplsLdpEntityAtmLsrConnectivity OBJECT-TYPE
         SYNTAX      INTEGER {
                        direct(1),
                        indirect(2)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The peer LSR may be connected indirectly by means of an
             ATM VP so that the VPI values may be different on either
             endpoint so the label MUST be encoded entirely within the
             VCI field."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt, Section 7"
         DEFVAL { direct }
         ::= { mplsLdpEntityAtmParmsEntry 4 }

     mplsLdpEntityDefaultControlVpi OBJECT-TYPE
         SYNTAX      AtmVpIdentifier
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The default VPI value for the non-MPLS connection.  The
             default value of this is 0 (zero) but other values may
             be configured.  This object allows a different value
             to be configured."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt, Section 7.1"
         DEFVAL
             { 0 }
         ::= { mplsLdpEntityAtmParmsEntry 5 }

     mplsLdpEntityDefaultControlVci OBJECT-TYPE
         SYNTAX      AtmVcIdentifier
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The Default VCI value for a non-MPLS connection.  The
             default value of this is 32 but other values may be
             configured.  This object allows a different value to
             be configured."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt, Section 7.1"
         DEFVAL
             { 32 }
         ::= { mplsLdpEntityAtmParmsEntry 6 }

     mplsLdpEntityUnlabTrafVpi OBJECT-TYPE
         SYNTAX      AtmVpIdentifier
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "VPI value of the VCC supporting unlabelled traffic.  This
             non-MPLS connection is used to carry unlabelled (IP) packets."
         DEFVAL  { 0 }
         ::= { mplsLdpEntityAtmParmsEntry 7 }

     mplsLdpEntityUnlabTrafVci OBJECT-TYPE
         SYNTAX      AtmVcIdentifier
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "VCI value of the VCC supporting unlabelled traffic.
             This non-MPLS connection is used to carry unlabelled (IP)
packets."
         DEFVAL  { 32 }
         ::= { mplsLdpEntityAtmParmsEntry 8 }

     mplsLdpEntityAtmRowStatus OBJECT-TYPE
         SYNTAX      RowStatus
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "An object that allows entries in this table to
             be created and deleted using the
             RowStatus convention."
         ::= { mplsLdpEntityAtmParmsEntry 4 9 }

     --
     -- The MPLS LDP Entity Configurable ATM Label Range Table
     --

     mplsLdpEntityConfAtmLabelRangeTable OBJECT-TYPE
         SYNTAX SEQUENCE OF MplsLdpEntityConfAtmLabelRangeEntry
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "The MPLS LDP Entity Configurable ATM Label Range Table.
             The purpose of this table is to provide a mechanism
             for specifying a contiguous range of vpi's
             with a contiguous range of vci's, or a 'label range'
             for LDP Entities.

             LDP Entities which use ATM must have at least one
             entry in this table."
         ::= { mplsLdpEntityAtmObjects 2 }

     mplsLdpEntityConfAtmLabelRangeEntry OBJECT-TYPE
         SYNTAX MplsLdpEntityConfAtmLabelRangeEntry
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "A row in the LDP Entity Configurable ATM Label
             Range Table.  One entry in this table contains
             information on a single range of labels
             represented by the configured Upper and Lower
             Bounds VPI/VCI pairs.  These are the same
             data used in the Initialization Message.

             NOTE:  The ranges for a specific LDP Entity
             are UNIQUE and non-overlapping.  For example,
             for a specific LDP Entity index, there could
             be one entry having ConfLowerBound vpi/vci == 0/32, and
             ConfUpperBound vpi/vci == 0/100, and a second entry for this
             same interface with ConfLowerBound vpi/vci == 0/101 and
             ConfUpperBound vpi/vci == 0/200.  However, there could not be
             a third entry with ConfLowerBound vpi/vci == 0/200 and
             ConfUpperBound vpi/vci == 0/300 because this label range
overlaps
             with the second entry (i.e. both entries now have 0/200).

             A row will not be created unless a unique and non-overlapping
             range is specified.  Thus, row creation implies a one-shot
             row creation of LDP EntityID and ConfLowerBound vpi/vci and
             ConfUpperBound vpi/vci.  At least one label range entry
             for a specific LDP Entity MUST include the default VPI/VCI
             values denoted in the LDP Entity Table."
         INDEX       {  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex
                        mplsLdpEntityIndex,
                        mplsLdpEntityConfAtmLabelRangeMinimumVpi,
                        mplsLdpEntityConfAtmLabelRangeMinimumVci
                     }
         ::= { mplsLdpEntityConfAtmLabelRangeTable 1 }

     MplsLdpEntityConfAtmLabelRangeEntry ::= SEQUENCE {
         mplsLdpEntityConfAtmLabelRangeMinimumVpi  AtmVpIdentifier,
         mplsLdpEntityConfAtmLabelRangeMinimumVci  AtmVcIdentifier,
         mplsLdpEntityConfAtmLabelRangeMaximumVpi  AtmVpIdentifier,
         mplsLdpEntityConfAtmLabelRangeMaximumVci  AtmVcIdentifier,
         mplsLdpEntityConfAtmLabelRangeRowStatus   RowStatus
     }

     mplsLdpEntityConfAtmLabelRangeMinimumVpi OBJECT-TYPE
         SYNTAX AtmVpIdentifier
         MAX-ACCESS read-create not-accessible
         STATUS current
         DESCRIPTION
             "The minimum VPI number configured for this range."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry 1 }

     mplsLdpEntityConfAtmLabelRangeMinimumVci OBJECT-TYPE
         SYNTAX AtmVcIdentifier
         MAX-ACCESS read-create not-accessible
         STATUS current
         DESCRIPTION
             "The minimum VCI number configured for this range."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry 2 }

     mplsLdpEntityConfAtmLabelRangeMaximumVpi OBJECT-TYPE
         SYNTAX AtmVpIdentifier
         MAX-ACCESS read-create
         STATUS current
         DESCRIPTION
             "The maximum VPI number configured for this range."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry 3 }

     mplsLdpEntityConfAtmLabelRangeMaximumVci OBJECT-TYPE
         SYNTAX AtmVcIdentifier
         MAX-ACCESS read-create
         STATUS current
         DESCRIPTION
             "The maximum VCI number configured for this range."
        ::= { mplsLdpEntityConfAtmLabelRangeEntry 4 }

     mplsLdpEntityConfAtmLabelRangeRowStatus OBJECT-TYPE
         SYNTAX RowStatus
         MAX-ACCESS read-create
         STATUS current
              DESCRIPTION
                  "An object that allows entries in this
                  table to be created and deleted using
                  the RowStatus convention.

                  There must exist at least one entry in this
                  table for every LDP Entity that has
                  'mplsLdpEntityOptionalParameters' object with
                  a value of 'atmSessionParameters'."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry 5 }

     --
     -- Ldp Entity Objects for Frame Relay
     --

     mplsLdpEntityFrameRelayObjects OBJECT IDENTIFIER ::=
                                         { mplsLdpEntityObjects 3 4 }

     mplsLdpEntityFrameRelayParmsTable  OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpEntityFrameRelayParmsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table contains information about the
             Optional Parameters to specify what this Entity is
             going to specify for Frame Relay specific
             LDP Intialization Messages."
         ::= { mplsLdpEntityFrameRelayObjects 1 }

     mplsLdpEntityFrameRelayParmsEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityFrameRelayParmsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table represents the Frame Relay
             optional parameters associated with the LDP entity."
         INDEX       {  mplsLdpEntityLdpId, mplsLdpEntityIndex  }
         ::= { mplsLdpEntityFrameRelayParmsTable 1 }

     MplsLdpEntityFrameRelayParmsEntry ::= SEQUENCE {
         mplsLdpEntityFrMergeCap                     INTEGER,
         mplsLdpEntityFrLabelRangeComponents         Unsigned32,
         mplsLdpEntityFrVcDirectionality             INTEGER,
         mplsLdpEntityFrParmsRowStatus               RowStatus
     }

     mplsLdpEntityFrMergeCap OBJECT-TYPE
         SYNTAX      INTEGER {
                         notSupported(0),
                         supported(1)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "This represents whether or not Frame Relay merge capability
             is supported."
         ::= { mplsLdpEntityFrameRelayParmsEntry 1 }

     mplsLdpEntityFrLabelRangeComponents OBJECT-TYPE
         SYNTAX      Unsigned32 (1..65535)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "Number of LabelRange Components in the Initialization
             message.  This also represents the number of entries
             in the mplsLdpEntityConfFRLabelRangeTable mplsLdpEntityConfFrLabelRangeTable which correspond
             to this entry."
         ::= { mplsLdpEntityFrameRelayParmsEntry 2 }

     mplsLdpEntityFrVcDirectionality OBJECT-TYPE
         SYNTAX      INTEGER {
                               bidirectional(0),
                               unidirection(1)
                             }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "If the value of this object is 'bidirectional(0)', then
             the LSR supports the use of a given DLCI as a label for
             both directions independently.  If the value of this object
             is 'unidirectional(1)', then the LSR uses the given DLCI
             as a label in only one direction."
         ::= { mplsLdpEntityFrameRelayParmsEntry 3 }

     mplsLdpEntityFrParmsRowStatus OBJECT-TYPE
         SYNTAX      RowStatus
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "An object that allows entries in this table to
                  be created and deleted using the
                  RowStatus convention."
         ::= { mplsLdpEntityFrameRelayParmsEntry 4 }
     --
     -- Frame Relay Label Range Components
     --

     mplsLdpEntityConfFrLabelRangeTable  OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpEntityConfFrLabelRangeEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table contains information about the
             Optional Parameters to specify what this Entity is
             going to specify for Frame Relay specific
             LDP Intialization Messages."
         ::= { mplsLdpEntityFrameRelayObjects 2 }

     mplsLdpEntityConfFrLabelRangeEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityConfFrLabelRangeEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table represents the Frame Relay
             optional parameters associated with the LDP entity."
         INDEX       {  mplsLdpEntityLdpId, mplsLdpEntityIndex
                        mplsLdpEntityIndex,
                        mplsLdpConfFrMinimumDlci
                     }
         ::= { mplsLdpEntityConfFrLabelRangeTable 1 }

     MplsLdpEntityConfFrLabelRangeEntry ::= SEQUENCE {
         mplsLdpConfFrLen                          INTEGER,
         mplsLdpConfFrMinimumDlci                  Integer32,
         mplsLdpConfFrMaximumDlci                  Integer32,
         mplsLdpConfFrRowStatus                    RowStatus
     }
         mplsLdpConfFrLen OBJECT-TYPE
         SYNTAX      INTEGER {
                         tenDlciBits(0),
                         seventeenDlciBits(1),
                         twentyThreeDlciBits(2)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "This object specifies the DLCI bits."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 1                          INTEGER,
         mplsLdpConfFrRowStatus                    RowStatus
     }

     mplsLdpConfFrMinimumDlci OBJECT-TYPE
         SYNTAX      Integer32      Integer32(0..4194303)
         MAX-ACCESS  read-create  not-accessible
         STATUS      current
         DESCRIPTION
             "The lower bound which is supported.  This value should
             be the same as that in the Frame Relay Label Range Component's
             Minimum DLCI field."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 2 1 }

     mplsLdpConfFrMaximumDlci OBJECT-TYPE
         SYNTAX      Integer32 (0..4194303)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The upper bound which is supported.  This value should
             be the same as that in the Frame Relay Label Range Component's
             Maximum DLCI field."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 2 }

     mplsLdpConfFrLen OBJECT-TYPE
         SYNTAX      INTEGER {
                         tenDlciBits(0),
                         seventeenDlciBits(1),
                         twentyThreeDlciBits(2)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "This object specifies the DLCI bits."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 3 }

     mplsLdpConfFrRowStatus OBJECT-TYPE
         SYNTAX      RowStatus
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "An object that allows entries in this table to
                  be created and deleted using the
                  RowStatus convention.

                  If the value of the object
'mplsLdpEntityOptionalParameters'
                  contains the value of 'frameReleaySessionParameters(3)'
then
                  there must be at least one corresponding entry in this
table."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 4 }

     --
     -- 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 5 }

     mplsLdpEntityStatsEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityStatsEntry
         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 for an
             LDP Session which contains a fatal error is counted
             here, because the session is terminated.
             If the error is NOT fatal (i.e. and the Session
             remains), then the error is counted in the
             mplsLdpSessionStatsEntry."
         AUGMENTS       {   mplsLdpEntityEntry  }
         ::= { mplsLdpEntityStatsTable 1 }

     MplsLdpEntityStatsEntry ::= SEQUENCE {
         mplsLdpAttemptedSessions                  Counter32,
         mplsLdpSessionRejectedNoHelloErrors       Counter32,
         mplsLdpSessionRejectedAdvertisementErrors Counter32,
         mplsLdpSessionRejectedMaxPduErrors        Counter32,
         mplsLdpSessionRejectedLabelRangeErrors    Counter32,
         mplsLdpBadLdpIdentifierErrors             Counter32,
         mplsLdpBadPduLengthErrors                 Counter32,
         mplsLdpBadMessageLengthErrors             Counter32,
         mplsLdpBadTlvLengthErrors                 Counter32,
         mplsLdpMalformedTlvValueErrors            Counter32,
         mplsLdpKeepAliveTimerExpiredErrors        Counter32,
         mplsLdpShutdownNotifReceived              Counter32,
         mplsLdpShutdownNotifSent                  Counter32
     }

     mplsLdpAttemptedSessions OBJECT-TYPE
         SYNTAX      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "A count of the total attempted sessions for
             this LDP Entity."
         ::= { mplsLdpEntityStatsEntry 1 }

     mplsLdpSessionRejectedNoHelloErrors 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."
         ::= { mplsLdpEntityStatsEntry 2 }
     mplsLdpSessionRejectedAdvertisementErrors 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."
         ::= { mplsLdpEntityStatsEntry 3 }

     mplsLdpSessionRejectedMaxPduErrors 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."
         ::= { mplsLdpEntityStatsEntry 4 }

     mplsLdpSessionRejectedLabelRangeErrors OBJECT-TYPE
         SYNTAX      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "A count of the Session Rejected/Parameters
             Label Range Notification Notification Messages sent
             or received by this LDP Entity."
         ::= { mplsLdpEntityStatsEntry 5 }

     mplsLdpBadLdpIdentifierErrors 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."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 6 }

     mplsLdpBadPduLengthErrors 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."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 7 }

     mplsLdpBadMessageLengthErrors 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."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 8 }

     mplsLdpBadTlvLengthErrors 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."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 9 }

     mplsLdpMalformedTlvValueErrors 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."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 10 }

     mplsLdpKeepAliveTimerExpiredErrors 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."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 11 }

     mplsLdpShutdownNotifReceived OBJECT-TYPE
         SYNTAX      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object counts the number of Shutdown Notfications
             received related to session(s) (past and present) associated
             with this LDP Entity."
         ::= { mplsLdpEntityStatsEntry 12 }

     mplsLdpShutdownNotifSent 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."
         ::= { mplsLdpEntityStatsEntry 13 }

     --
     -- The MPLS LDP Peer Table
     --

     mplsLdpPeerObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 3 }

     mplsLdpPeerTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpPeerEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Information about LDP peers which have been discovered
             by the LDP Entities that are managed by this agent."
         ::= { mplsLdpPeerObjects 1 }

     mplsLdpPeerEntry OBJECT-TYPE
         SYNTAX      MplsLdpPeerEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Information about a single Peer."
         INDEX       { mplsLdpPeerLdpId,
                       mplsLdpPeerIndex }
         ::= { mplsLdpPeerTable 1 }
     MplsLdpPeerEntry ::= SEQUENCE {
         mplsLdpPeerLdpId                      MplsLdpIdentifier,
         mplsLdpPeerIndex                      Unsigned32,
         mplsLdpPeerInternetworkAddrType       AddressFamilyNumbers,
         mplsLdpPeerInternetworkAddr           MplsLdpGenAddr,
         mplsLdpPeerLabelDistributionMethod    INTEGER,
         mplsLdpPeerLoopDetectionForPV         INTEGER,
         mplsLdpPeerPathVectorLimit            Integer32
     }

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

     mplsLdpPeerIndex OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An identifier for the LDP peer that is unique within the
             scope of table.  This index is a secondary index which
             along with the mplsLdpPeerLdpId, uniquely identifies
             this agent." entry."
         ::= { mplsLdpPeerEntry 2 }

     mplsLdpPeerInternetworkAddrType OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The type of the internetwork layer address of this
             LDP peer. This object indicates how the value of
             mplsLdpPeerInternetworkAddr is to be interpreted."
         ::= { mplsLdpPeerEntry 3 }

     mplsLdpPeerInternetworkAddr OBJECT-TYPE
         SYNTAX      MplsLdpGenAddr
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The value of the internetwork layer address of this LDP peer."
         ::= { mplsLdpPeerEntry 4 }

     mplsLdpPeerLabelDistributionMethod OBJECT-TYPE
         SYNTAX      INTEGER {
                        downstreamOnDemand(1),
                        downstreamUnsolicited(2)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "For any given LDP session, the method of
             label distribution must be specified."
         REFERENCE
             "draft-ietf-mpls-arch-06.txt [20]."
         ::= { mplsLdpPeerEntry 5 }

     mplsLdpPeerLoopDetectionForPV OBJECT-TYPE
         SYNTAX      INTEGER {
                        disabled(0),
                        enabled(1)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "An indication of whether loop detection based on path vectors
is
             disabled or enabled for this Peer.

             If this object has a value of disabled(0),
             then loop detection is disabled.  Otherwise, if this object has
             a value of enabled(1), then loop detection based on path
vectors
             is enabled."
         ::= { mplsLdpPeerEntry 6 }

     mplsLdpPeerPathVectorLimit OBJECT-TYPE
         SYNTAX      Integer32 (0..255)
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "If the value of 'mplsLdpPeerLoopDetectionForPV' for this entry
is
             'enabled(1)', the this object represents that Path Vector Limit
             for this peer.

             If the value of 'mplsLdpPeerLoopDetectionForPV' for this entry
             is 'disabled(0)', then this value should be 0 (zero)."
         ::= { mplsLdpPeerEntry 7 }

     --
     -- The MPLS LDP Sessions Table
     --

     mplsLdpSessionObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 4 }

     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.  Each row represents a single session."
         ::= { mplsLdpSessionObjects 1 }

     mplsLdpSessionEntry OBJECT-TYPE
         SYNTAX      MplsLdpSessionEntry
         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."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                       mplsLdpPeerIndex,
                       mplsLdpSessionIndex
                     }
         ::= { mplsLdpSessionTable 1 }

     MplsLdpSessionEntry ::= SEQUENCE {
         mplsLdpSessionIndex                          Unsigned32,
         mplsLdpSessionState                          INTEGER,
         mplsLdpSessionProtocolVersion                Integer32,
         mplsLdpSessionKeepAliveHoldTimeRemaining     TimeInterval,
         mplsLdpSessionLabelAdvertisement             INTEGER,
         mplsLdpSessionLoopDetectionForPV             INTEGER,
         mplsLdpSessionPathVectorLimit                Integer32,
         mplsLdpSessionMaxPduLength                   Integer32
     }

     mplsLdpSessionIndex OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An unique identifier for this entry such that it
             identifies a specific LDP Session." Session.  The motivation for
             this index is so an NMS can distinguish when a session
             between a given Entity and Peer goes away and then is
             're-established'.  This index value would change and
             thus indicate to the NMS that this is a different session."
         ::= { mplsLdpSessionEntry 1 }

     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 - 5 are based on the state machine for
             session negotiation behavior."
         ::= { mplsLdpSessionEntry 2 }

     mplsLdpSessionProtocolVersion OBJECT-TYPE
              SYNTAX      Integer32(1..65535)
              MAX-ACCESS  read-only
              STATUS      current
              DESCRIPTION
                  "The version of the LDP Protocol which
                  this session is using."
              ::= { mplsLdpSessionEntry 3 }

     mplsLdpSessionKeepAliveHoldTimeRemaining OBJECT-TYPE
         SYNTAX      TimeInterval
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The keep alive hold time remaining for this session."
         ::= { mplsLdpSessionEntry 4 }

     mplsLdpSessionLabelAdvertisement OBJECT-TYPE
         SYNTAX      INTEGER {
                        downStreamUnsolicited(0),
                        downStreamOnDemand(1)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The label advertisement discipline used for this Session."
         ::= { mplsLdpSessionEntry 5 }

     mplsLdpSessionLoopDetectionForPV OBJECT-TYPE
         SYNTAX      INTEGER {
                        disabled(0),
                        enabled(1)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "An indication of whether loop detection based on path vectors
is
             disabled or enabled for this session.

             If this object has a value of disabled(0),
             then loop detection is disabled.  Otherwise, if this object has
             a value of enabled(1), then loop detection based on path
vectors
             is enabled."
         ::= { mplsLdpSessionEntry 6 }

     mplsLdpSessionPathVectorLimit OBJECT-TYPE
         SYNTAX      Integer32 (0..255)
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "If the value of 'mplsLdpSessionLoopDetectionForPV' for this
entry is
             'enabled(1)', the this object represents the Path Vector Limit
             for this session.

             If the value of 'mplsLdpSessionLoopDetectionForPV' for this
entry
             is 'disabled(0)', then this value should be 0 (zero)."
         ::= { mplsLdpSessionEntry 7 }

     mplsLdpSessionMaxPduLength OBJECT-TYPE
         SYNTAX      Integer32 (0..65535)
         MAX-ACCESS  read-only
         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."
         ::= { mplsLdpSessionEntry 8 }

     --
     -- MPLS LDP ATM Session Information
     --

     mplsLdpAtmSessionTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpAtmSessionEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table of Sessions between the LDP Entities and
             LDP Peers using ATM as the underlying media.
             Each row represents a single session.

             NOTE:  this table cannot use the 'AUGMENTS'
             clause because there is not necessarily a one-to-one
             mapping between this table and the mplsLdpSessionTable."
         ::= { mplsLdpSessionObjects 2 }

     mplsLdpAtmSessionEntry OBJECT-TYPE
         SYNTAX      MplsLdpAtmSessionEntry
         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."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                       mplsLdpPeerIndex,
                       mplsLdpSessionIndex
                       mplsLdpSessionIndex,
                       mplsLdpSessionAtmLabelRangeLowerBoundVpi,
                       mplsLdpSessionAtmLabelRangeLowerBoundVci

                     }
         ::= { mplsLdpAtmSessionTable 1 }

     MplsLdpAtmSessionEntry ::= SEQUENCE {
         mplsLdpSessionAtmLabelRangeLowerBoundVpi     AtmVpIdentifier,
         mplsLdpSessionAtmLabelRangeLowerBoundVci     AtmVcIdentifier,
         mplsLdpSessionAtmLabelRangeUpperBoundVpi     AtmVpIdentifier,
         mplsLdpSessionAtmLabelRangeUpperBoundVci     AtmVcIdentifier
     }

     mplsLdpSessionAtmLabelRangeLowerBoundVpi OBJECT-TYPE
         SYNTAX AtmVpIdentifier
         MAX-ACCESS read-only not-accessible
         STATUS current
         DESCRIPTION
             "The minimum VPI number for this range."
         ::= { mplsLdpAtmSessionEntry 1 }

     mplsLdpSessionAtmLabelRangeLowerBoundVci OBJECT-TYPE
         SYNTAX AtmVcIdentifier
         MAX-ACCESS read-only not-accessible
         STATUS current
         DESCRIPTION
             "The minimum VCI number for this range."
         ::= { mplsLdpAtmSessionEntry 2 }

     mplsLdpSessionAtmLabelRangeUpperBoundVpi OBJECT-TYPE
         SYNTAX AtmVpIdentifier
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
             "The maximum VPI number for this range."
         ::= { mplsLdpAtmSessionEntry 3 }

     mplsLdpSessionAtmLabelRangeUpperBoundVci OBJECT-TYPE
         SYNTAX AtmVcIdentifier
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
             "The maximum VCI number for this range."
         ::= { mplsLdpAtmSessionEntry 4 }

     --
     -- MPLS LDP Frame Relay Session Information
     --

     mplsLdpFrameRelaySessionTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpFrameRelaySessionEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table of Sessions between the LDP Entities and
             LDP Peers using Frame Relay as the underlying media.
             Each row represents a single session.

             NOTE:  this table cannot use the 'AUGMENTS'
             clause because there is not necessarily a one-to-one
             mapping between this table and the mplsLdpSessionTable."
         ::= { mplsLdpSessionObjects 3 }

     mplsLdpFrameRelaySessionEntry OBJECT-TYPE
         SYNTAX      MplsLdpFrameRelaySessionEntry
         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."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                       mplsLdpPeerIndex,
                       mplsLdpSessionIndex
                       mplsLdpSessionIndex,
                       mplsLdpFrSessionMinDlci
                     }
         ::= { mplsLdpFrameRelaySessionTable 1 }

     MplsLdpFrameRelaySessionEntry ::= SEQUENCE {
         mplsLdpFrSessionLen        INTEGER,
         mplsLdpFrSessionMinDlci    Integer32,
         mplsLdpFrSessionMaxDlci     Integer32
     }    Integer32,
         mplsLdpFrSessionLen OBJECT-TYPE
         SYNTAX        INTEGER {
                         tenDlciBits(0),
                         seventeenDlciBits(1),
                         twentyThreeDlciBits(2)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object specifies the DLCI bits."
         ::= { mplsLdpFrameRelaySessionEntry 1
     }

     mplsLdpFrSessionMinDlci OBJECT-TYPE
         SYNTAX      Integer32      Integer32(0..4194303)
         MAX-ACCESS  read-only  not-accessible
         STATUS      current
         DESCRIPTION
             "The lower bound of DLCIs which are supported."
         ::= { mplsLdpFrameRelaySessionEntry 2 1 }

     mplsLdpFrSessionMaxDlci OBJECT-TYPE
         SYNTAX      Integer32 (0..4194303)
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The upper bound of DLCIs which are supported."
         ::= { mplsLdpFrameRelaySessionEntry 2 }

     mplsLdpFrSessionLen OBJECT-TYPE
         SYNTAX      INTEGER {
                         tenDlciBits(0),
                         seventeenDlciBits(1),
                         twentyThreeDlciBits(2)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object specifies the DLCI bits."
         ::= { mplsLdpFrameRelaySessionEntry 3 }

     --
     -- The MPLS LDP Session Statistics Table
     --

     mplsLdpSessionStatsTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpSessionStatsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table of Sessions between the LDP Entities and
             LDP Peers."
         ::= { 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       { mplsLdpSessionEntry }
         ::= { mplsLdpSessionStatsTable 1 }

     MplsLdpSessionStatsEntry ::= SEQUENCE {
         mplsLdpSessionStatsUnknownMessageTypeErrors Counter32,
         mplsLdpSessionStatsUnknownTlvErrors         Counter32
     }

     mplsLdpSessionStatsUnknownMessageTypeErrors OBJECT-TYPE
         SYNTAX      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object counts the number of Unknown Message Type
             Errors detected during this session."
         ::= { mplsLdpSessionStatsEntry 1 }

     mplsLdpSessionStatsUnknownTlvErrors OBJECT-TYPE
         SYNTAX      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object counts the number of Unknown TLV Errors
             detected during this session."
         ::= { mplsLdpSessionStatsEntry 2 }

     --
     -- 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.
     --

     mplsLdpSessionPeerAddressTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpSessionPeerAddressEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table 'extends' the mplsLdpSessionTable.
             This table is used to store Label Address Information
             from Label Address Message received by this LSR from
             Peers.  This table is read-only and should be updated
             when Label Withdraw Address Messages are received, i.e.
             Rows should be deleted as apropriate.

             NOTE:  since more than one address may be contained
             in a Label Address Message, this table 'extends',
             rather than 'AUGMENTS' the mplsLdpSessionTable's
             information."
         ::= { mplsLdpSessionObjects 5 }

     mplsLdpSessionPeerAddressEntry OBJECT-TYPE
         SYNTAX      MplsLdpSessionPeerAddressEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table represents information on
             session's for a 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,
                       mplsLdpPeerIndex,
                       mplsLdpSessionIndex
                     }
         ::= { mplsLdpSessionPeerAddressTable 1 }

     MplsLdpSessionPeerAddressEntry ::= SEQUENCE {
         mplsLdpSessionPeerNextHopAddressType     AddressFamilyNumbers,
         mplsLdpSessionPeerNextHopAddress         MplsLdpGenAddr
     }

     mplsLdpSessionPeerNextHopAddressType OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers
         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
mplsLdpSessionPeerNextHopAddress."
         ::= { mplsLdpSessionPeerAddressEntry 1 }

     mplsLdpSessionPeerNextHopAddress OBJECT-TYPE
         SYNTAX      MplsLdpGenAddr
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The value of the next hop address."
         REFERENCE
             "LDP Specification [18] defines only IPv4 for LDP Protocol
             Version 1, see section 3.4.3."
         ::= { mplsLdpSessionPeerAddressEntry 2 }
     --
     -- The MPLS LDP Hello Adjacency Table
     --

     mplsLdpHelloAdjacencyObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 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,
                       mplsLdpPeerIndex,
                       mplsLdpHelloAdjacencyIndex }
         ::= { mplsLdpHelloAdjacencyTable 1 }

     MplsLdpHelloAdjacencyEntry ::= SEQUENCE {
         mplsLdpHelloAdjacencyIndex                  Unsigned32,
         mplsLdpHelloAdjacencyHoldTimeRemaining      TimeInterval,
         mplsLdpHelloAdjacencyType                   INTEGER
     }

     mplsLdpHelloAdjacencyIndex OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An identifier for this specific adjacency."
         ::= { mplsLdpHelloAdjacencyEntry 1 }

     mplsLdpHelloAdjacencyHoldTimeRemaining OBJECT-TYPE
         SYNTAX      TimeInterval
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The time remaining for this Hello Adjacency.
             This interval will change when the 'next'
             Hello message which corresponds to this
             Hello Adjacency is received."
         ::= { mplsLdpHelloAdjacencyEntry 2 }

     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).
             Otherwise, it is a result of a 'targeted'
             hello, targeted(2)."
         ::= { mplsLdpHelloAdjacencyEntry 3 }

     --
     -- MPLS LDP LIB Table
     --

     mplsLdpLibObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 6 }

     mplsLdpLibTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpLibEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table represents LIB (Label Information Base)
             Information.  The table is read-only."
         ::= { mplsLdpLibObjects 1 }

     mplsLdpLibEntry OBJECT-TYPE
         SYNTAX      MplsLdpLibEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Each row represents a single LDP LIB entry."
         INDEX       { mplsLdpLibLspId }
         ::= { mplsLdpLibTable 1 }

     MplsLdpLibEntry ::= SEQUENCE {
         mplsLdpLibLspId                             Unsigned32,
         mplsLdpLibLabelInIfIndex                    InterfaceIndex,
         mplsLdpLibLabelOutIfIndex                   InterfaceIndex,
         mplsLdpLibLabelType                         MplsLdpLabelTypes,
         mplsLdpLibInLabel                           MplsLdpGenAddr,
         mplsLdpLibOutLabel                          MplsLdpGenAddr
     }
     mplsLdpLibLspId  OBJECT-TYPE
         SYNTAX       Unsigned32 (1..4294967295)
         MAX-ACCESS   not-accessible
         STATUS       current
         DESCRIPTION
             "This number is used to uniquely identify this row, since this
             row is associated with a specific LSP, it may also be used
             to describe a unique number for an LSP.  This number is used
             in the mplsLdpFecTable to identify which FECs or FEC is
             associated with this LIB entry."
         ::= { mplsLdpLibEntry 1 }

     mplsLdpLibLabelInIfIndex OBJECT-TYPE
         SYNTAX       InterfaceIndex
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "The ifIndex of the 'mplsLdpInLabel'."
         ::= { mplsLdpLibEntry 2 }

     mplsLdpLibLabelOutIfIndex OBJECT-TYPE
         SYNTAX       InterfaceIndex
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "The ifIndex of the 'mplsLdpOutLabel'."
         ::= { mplsLdpLibEntry 3 }

     mplsLdpLibLabelType  OBJECT-TYPE
         SYNTAX        MplsLdpLabelTypes
         MAX-ACCESS    read-only
         STATUS        current
         DESCRIPTION
             "The Layer 2 Label Type for 'mplsLdpInLabel' and
             'mplsLdpOutLabel'."
         ::= { mplsLdpLibEntry 4 }

     mplsLdpLibInLabel OBJECT-TYPE
         SYNTAX        MplsLdpGenAddr
         MAX-ACCESS    read-only
         STATUS        current
         DESCRIPTION
             "The incoming label of this LSP."
         ::= { mplsLdpLibEntry 5 }

     mplsLdpLibOutLabel OBJECT-TYPE
         SYNTAX         MplsLdpGenAddr
         MAX-ACCESS     read-only
         STATUS         current
         DESCRIPTION
            "The outgoing label of this LSP."
         ::= { mplsLdpLibEntry 6 }

     --
     -- Mpls Ldp FEC Table
     --

     mplsLdpFecTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpFecEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table represents the FEC
             (Forwarding Equivalence Class)
             Information associated with an LSP.
             The table is read-only."
         ::= { mplsLdpLibObjects 2 }

     mplsLdpFecEntry OBJECT-TYPE
         SYNTAX      MplsLdpFecEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Each row represents a single FEC Element."
         INDEX       { mplsLdpFecType,
                       mplsLdpFecAddressFamily,
                       mplsLdpFecAddressLength,
                       mplsLdpFecAddress }
         ::= { mplsLdpFecTable 1 }

     MplsLdpFecEntry ::= SEQUENCE {
         mplsLdpFecType           INTEGER,
         mplsLdpFecAddressFamily  AddressFamilyNumbers,
         mplsLdpFecAddressLength  Integer32(0..255),
         mplsLdpFecAddress        MplsLdpGenAddr,
         mplsLdpFecLspId          Unsigned32
     }

     mplsLdpFecType  OBJECT-TYPE
         SYNTAX      INTEGER {
                        prefix(1),
                        hostAddress(2)
                     }
         MAX-ACCESS  not-accessible
         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 for address prefixes.

             If the value of this object is 'hostAddress(2)' then
             the FEC type described by this row is a host address."
         ::= { mplsLdpFecEntry 1 }

     mplsLdpFecAddressFamily  OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "The value of this object is from the Address Family
             Numbers."
         ::= { mplsLdpFecEntry 2 }

     mplsLdpFecAddressLength  OBJECT-TYPE
         SYNTAX      Integer32(0..255)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "If the value of 'mplsLdpFecType' is 'prefix(1)'
             then the value of this object is the length in
             bits of the address prefix represented by
             'mplsLdpFecAddress', or if the length is zero then
             this is a special value which indicates that the
             prefix matches all addresses.  In this case the
             prefix is also zero (i.e. 'mplsLdpFecAddress' will
             have the value of zero.)"
         ::= { mplsLdpFecEntry 3 }

     mplsLdpFecAddress  OBJECT-TYPE
         SYNTAX      MplsLdpGenAddr
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "If the value of 'mplsLdpFecType' is 'prefix(1)'
             then the value of this object is the address prefix.
             If the value of the 'mplsLdpFecAddressLength'
             is object is zero, then this object should also be
             zero."
         ::= { mplsLdpFecEntry 4 }

     mplsLdpFecLspId OBJECT-TYPE
         SYNTAX       Unsigned32 (1..4294967295)
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "This number represents the LSP which is related to
             this FEC.  The value of this object should correspond
             to an entry in the MplsLdpLibTable, as denoted by
             the 'mplsLdpLibLspId' object.  In other words, this
             object and the 'mplsLdpLibLspId' should have the same
             value."
         ::= { mplsLdpFecEntry 5 }

     ---
     --- Notifications
     ---

     mplsLdpNotificationPrefix   OBJECT IDENTIFIER ::=
                                      { mplsLdpNotifications 0 }

     mplsLdpFailedInitSessionThresholdExceeded NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpEntityFailedInitSessionThreshold
                      }
          STATUS      current
          DESCRIPTION
             "This notification is generated whenever the value
             of mplsLdpEntityFailedInitSessionThreshold is
             exceeded."
          ::= { mplsLdpNotificationPrefix 1 }

     mplsLdpPathVectorLimitMismatch NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpPeerPathVectorLimit,
                        mplsLdpSessionPathVectorLimit
                      }
          STATUS      current
          DESCRIPTION
             "This notification is generated when the value
             of mplsLdpSessionPathVectorLimit does NOT match
             the value of the mplsLdpPeerPathVectorLimit for
             the corresponding mplsLdpPeerEntry."
          REFERENCE
             "LDP Specification, Section 3.5.3."
          ::= { mplsLdpNotificationPrefix 2 }

     --********************************************************************
     -- Module Conformance Statement
     --********************************************************************

     mplsLdpGroups
         OBJECT IDENTIFIER ::= { mplsLdpConformance 1 }

     mplsLdpCompliances
         OBJECT IDENTIFIER ::= { mplsLdpConformance 2 }
     --
     -- Compliance Statements
     --

     mplsLdpModuleCompliance MODULE-COMPLIANCE
         STATUS current
         DESCRIPTION
             "The basic implentation requirements for agents that support
             the MPLS LDP MIB."
         MODULE -- this module
             MANDATORY-GROUPS    { mplsLdpGeneralGroup,
                                   mplsLdpNotificationsGroup
                                 }
         GROUP mplsLdpAtmGroup
         DESCRIPTION
             "This group must be supported if ATM is used in the
             MPLS LDP implementation."

         GROUP mplsLdpFrameRelayGroup
         DESCRIPTION
             "This group must be supported if Frame Relay is used in the
             MPLS LDP implementation."
         ::= { mplsLdpCompliances 1 }

     -- units of conformance

     mplsLdpGeneralGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpLsrId,
         mplsLdpLsrLabelRetentionMode,
         mplsLdpLsrLoopDetectionCapable,
         mplsLdpEntityIndexNext,
         mplsLdpEntityProtocolVersion,
         mplsLdpEntityAdminStatus,
         mplsLdpEntityOperStatus,
         mplsLdpEntityWellKnownDiscoveryPort,
         mplsLdpEntityMtu,
         mplsLdpEntityKeepAliveHoldTimer,
         mplsLdpEntityHelloHoldTimer,
         mplsLdpEntityFailedInitSessionThreshold,
         mplsLdpEntityLabelDistributionMethod,
         mplsLdpEntityTargetedPeer,
         mplsLdpEntityTargetedPeerAddrType,
         mplsLdpEntityTargetedPeerAddr,
         mplsLdpEntityOptionalParameters,
         mplsLdpEntityRowStatus,
         mplsLdpAttemptedSessions,
         mplsLdpSessionRejectedNoHelloErrors,
         mplsLdpSessionRejectedAdvertisementErrors,
         mplsLdpSessionRejectedMaxPduErrors,
         mplsLdpSessionRejectedLabelRangeErrors,
         mplsLdpBadLdpIdentifierErrors,
         mplsLdpBadPduLengthErrors,
         mplsLdpBadMessageLengthErrors,
         mplsLdpBadTlvLengthErrors,
         mplsLdpMalformedTlvValueErrors,
         mplsLdpKeepAliveTimerExpiredErrors,
         mplsLdpShutdownNotifReceived,
         mplsLdpShutdownNotifSent,
         mplsLdpPeerInternetworkAddrType,
         mplsLdpPeerInternetworkAddr,
         mplsLdpPeerLabelDistributionMethod,
         mplsLdpPeerLoopDetectionForPV,
         mplsLdpPeerPathVectorLimit,
         mplsLdpSessionState,
         mplsLdpSessionProtocolVersion,
         mplsLdpSessionKeepAliveHoldTimeRemaining,
         mplsLdpSessionLabelAdvertisement,
         mplsLdpSessionLoopDetectionForPV,
         mplsLdpSessionPathVectorLimit,
         mplsLdpSessionMaxPduLength,
         mplsLdpSessionStatsUnknownMessageTypeErrors,
         mplsLdpSessionStatsUnknownTlvErrors,
         mplsLdpSessionPeerNextHopAddressType,
         mplsLdpSessionPeerNextHopAddress,
         mplsLdpHelloAdjacencyHoldTimeRemaining,
         mplsLdpHelloAdjacencyType,
         mplsLdpLibLabelInIfIndex,
         mplsLdpLibLabelOutIfIndex,
         mplsLdpLibLabelType,
         mplsLdpLibInLabel,
         mplsLdpLibOutLabel,
         mplsLdpFecLspId

         }
         STATUS    current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations."
         ::= { mplsLdpGroups 1 }

     mplsLdpAtmGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpEntityAtmMergeCap,
         mplsLdpEntityAtmLabelRangeComponents,
         mplsLdpEntityAtmVcDirectionality,
         mplsLdpEntityAtmLsrConnectivity,
         mplsLdpEntityDefaultControlVpi,
         mplsLdpEntityDefaultControlVci,
         mplsLdpEntityUnlabTrafVpi,
         mplsLdpEntityUnlabTrafVci,
         mplsLdpEntityAtmRowStatus,
         mplsLdpEntityConfAtmLabelRangeMinimumVpi,
         mplsLdpEntityConfAtmLabelRangeMinimumVci,
         mplsLdpEntityConfAtmLabelRangeMaximumVpi,
         mplsLdpEntityConfAtmLabelRangeMaximumVci,
         mplsLdpEntityConfAtmLabelRangeRowStatus,
         mplsLdpSessionAtmLabelRangeLowerBoundVpi,
         mplsLdpSessionAtmLabelRangeLowerBoundVci,
         mplsLdpSessionAtmLabelRangeUpperBoundVpi,
         mplsLdpSessionAtmLabelRangeUpperBoundVci

         }
         STATUS    current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations over ATM."
         ::= { mplsLdpGroups 2 }

     mplsLdpFrameRelayGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpEntityFrMergeCap,
         mplsLdpEntityFrLabelRangeComponents,
         mplsLdpEntityFrVcDirectionality,
         mplsLdpEntityFrParmsRowStatus,
         mplsLdpConfFrLen,
         mplsLdpConfFrMinimumDlci,
         mplsLdpConfFrMaximumDlci,
         mplsLdpConfFrLen,
         mplsLdpConfFrRowStatus,
         mplsLdpFrSessionLen,
         mplsLdpFrSessionMinDlci,
         mplsLdpFrSessionMaxDlci
         mplsLdpFrSessionMaxDlci,
         mplsLdpFrSessionLen
         }
         STATUS    current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations over
             Frame Relay."
         ::= { mplsLdpGroups 3 }

         mplsLdpNotificationsGroup NOTIFICATION-GROUP
             NOTIFICATIONS { mplsLdpFailedInitSessionThresholdExceeded,
                             mplsLdpPathVectorLimitMismatch
                            }
             STATUS   current
             DESCRIPTION
                 "The notification(s) which an MPLS LDP implemention
                 is required to implement."
             ::= { mplsLdpGroups 4 }

     END

5.  Revision History

   This section should be removed when this document is published as an
   RFC.

5.1.  Changes from <draft-ietf-mpls-ldp-mib-02.txt>

   Added Scalar Objects:  mplsLdpLsrLoopDetectionPresent, and
   mplsLdpEntityIndexNext.

   Added the following objects to the mplsLdpEntityTable:
   mplsLdpEntityProtocolVersion, mplsLdpEntityAdminStatus,
   mplsLdpEntityOperStatus, mplsLdpEntityTargetedPeer,
   mplsLdpEntityTargetedPeerAddrType, mplsLdpEntityTargetedPeerAddr, and
   mplsLdpEntityHelloHoldTimer.

   Changed the description of the mplsLdpEntityAtmParmsTable and added
   the following objects to this table:
   mplsLdpEntityAtmLsrConnectivity, mplsLdpEntityDefaultControlVpi,
   mplsLdpEntityDefaultControlVci, mplsLdpEntityUnlabTrafVpi, and
   mplsLdpEntityUnlabTrafVci.  NOTE:  the last four objects were in
   Version 01 of the MIB but were mistakenly omitted from Version 02.
   Now, they are back.

   Changed the indexing of the mplsLdpEntityConfAtmLabelRangeTable to
   include the minimum VPI/VCI.  This is to ensure that indices in this
   table are unique.

   Changed the indexing of the mplsLdpEntityConfFrLabelRangeTable, to
   include the minimum DLCI value.  This is to ensure that indices in
   this table are unique.

   Added [32] to Reference Section.

5.2.  Changes from <draft-ietf-mpls-ldp-mib-01.txt>

   The MIB was updated to correspond to draft-ietf-mpls-ldp-06.txt of
   the LDP Specification [18].

   The front section was updated.

   The MIB was made to be less ATM-centric.  Essentially, the ATM
   specific objects where removed from the tables and placed in ATM
   specific Tables.  A "type" was added to the "base" tables and a row
   is to be created in the ATM/FR/etc.  "type" table.  Apropos
   compliance statements were added to reflect the separation of ATM and
   Frame Relay objects into their respective tables.

   Objects for Loop Detection were removed from describing the LDP
   implementation (i.e. the scalars were removed) and Loop Dection
   objects were added to the Session Table.  (Although as the LDP
   Specification indicates loop detection should be for an LSR within a
   domain.)

   The following tables were added:  mplsLdpEntityAtmParmsTable,
   mplsLdpEntityConfAtmLabelRangeTable, mplsLdpFrameRelayParmsTable,
   mplsLdpConfFrLabelRangeTable, mplsLdpAtmSessionTable,
   mpslLdpFrameRelaySessionTable, mplsLdpSessionPeerAddressTable,
   mplsLdpLibTable, and the mplsLdpFecTable.

   The following notifications were added:  notification for Session
   removal.

   The following objects were removed from the Session Table:
   mplsLdpSessionRole was removed (this can be determined by comparing
   LSR Ids and does not need to be explicitely in the MIB.)  ATM
   specific objects (mplsLdpSessionAtmLabelRangeLowerBoundVpi
   mplsLdpSessionAtmLabelRangeLowerBoundVci,
   mplsLdpSessionAtmLabelRangeUpperBoundVpi
   mplsLdpSessionAtmLabelRangeUpperBoundVci) were removed and put into a
   separate table.  Frame Relay objects were added in a separate table.

   Hello Adjacency Table was updated.

   The objects, mplsLdpSessionRejectedParamErrors,
   mplsLdpSessionRejectedNoHelloErrors, mplsLdpBadLdpIdentifierErrors,
   mplsLdpBadPduLengthErrors, mplsLdpBadMessageLengthErrors,
   mplsLdpBadTlvLengthErrors, mplsLdpMalformedTlvValueErrors,
   mplsLdpKeepAliveTimerExpiredErrors, mplsLdpShutdownNotifReceived, and
   mplsLdpShutdownNotifSent were added to the mplsLdpEntityStatsTable.

   The mplsLdpSessionStatsTable was added to count statics based on a
   per Session basis.

   The mplLdpPeerConfAtmLabelRangeTable has been removed.  There is no
   need to configure information for a Peer.  All information for a peer
   is learned, thus peer information is read-only.

   (Editorial) References were updated to reflect the documents which
   this version was based on.

5.2.

5.3.  Changes from <draft-ietf-mpls-ldp-mib-00.txt>

   Textual conventions were added for the LSR Identifier and the LDP
   Identifier.

   Top-level mib structure was added. The LDP MIB falls under a proposed
   hierarchy of mpls.mplsProtocols.

   The mib hierarchy within the LDP MIB was also changed.  A new branch,
   under mpls.mplsProtocols.mplsLdpMIB.mplsLdpObjects was added.  This
   branch is mplsLdpLsrObjects.  Currently, this contains several new
   scalar objects:  mplsLdpLsrID, mplsLdpLsrLoopDetectionPresent,
   mplsLdpLsrLoopDetectinAdminStatus, mplsLdpLsrPathVectorLimit,
   mplsLdpLsrHopCountLimit, mplsLdpLsrLoopPreventionPresent,
   mplsLdpLsrLoopPreventionAdminStatus, and
   mplsLdpLsrLabelRetentionMode.

   mplsLdpEntityTable is now indexed by mplsLdpEntityIdentifier, which
   is the LDP Identifier used in Session establishment.
   mplsLdpEntityLoopDetection and mplsLdpEntityLoopPrevention objects
   were removed from this table.

   The following objects were added to the mplsLdpEntityTable:
   mplsLdpEntityLabelSpaceType, mplsLdpEntityUnlabTrafVpi,
   mplsLdpEntityUnlabTrafVci, mplsLdpEntityMergeCapability,
   mplsLdpEntityVcDirectionality, and
   mplsLdpEntityLabelDistributionMethod.

   The following objects were added to the mplsLdpPeerEntityTable:
   mplsLdpPeerLabelDistributionMethod.

   The following object was removed from the mplsLdpEntityStatsTable:
   mplsLdpEntityEstablishedSessions.

   References were added and revised.

6.  TO DO List

   This section should be removed when this document is published as an
   RFC.  This section outlines the next areas the authors intend to
   address in subsequent revisions.

    o   Remove the following sections prior to final publication:  IANA
        Considerations Section, Revisions Section and this (TO DO List)
        Section.

    o   Updates as suggested by review of working group.

7.  Acknowledgments

   The authors would like to thank the following people:  Leigh
   McLellan, Geetha Brown, Geping Chen and Charlan Zhou from Nortel
   Networks, and Zoltan Takacs and Bo Augustsson from Ericsson.

8.  References

[RFC2571]   Harrington, D., Presuhn, R., and B. Wijnen, "An Architecture
            for Describing SNMP Management Frameworks", RFC 2571, April
            1999

[RFC1155]   Rose, M., and K. McCloghrie, "Structure and Identification
            of Management Information for TCP/IP-based Internets", STD
            16, RFC 1155, May 1990

[RFC1212]   Rose, M., and K. McCloghrie, "Concise MIB Definitions", STD
            16, RFC 1212, March 1991

[RFC1215]   M. Rose, "A Convention for Defining Traps for use with the
            SNMP", RFC 1215, March 1991

[RFC2578]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
            Rose, M., and S. Waldbusser, "Structure of Management
            Information Version 2 (SMIv2)", STD 58, RFC 2578, April 1999

[RFC2579]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
            Rose, M., and S. Waldbusser, "Textual Conventions for
            SMIv2", STD 58, RFC 2579, April 1999

[RFC2580]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
            Rose, M., and S. Waldbusser, "Conformance Statements for
            SMIv2", STD 58, RFC 2580, April 1999

[RFC1157]   Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
            Network Management Protocol", STD 15, RFC 1157, May 1990.

[RFC1901]   Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
            "Introduction to Community-based SNMPv2", RFC 1901, January
            1996.

[RFC1906]   Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
            "Transport Mappings for Version 2 of the Simple Network
            Management Protocol (SNMPv2)", RFC 1906, January 1996.

[RFC2572]   Case, J., Harrington D., Presuhn R., and B. Wijnen, "Message
            Processing and Dispatching for the Simple Network Management
            Protocol (SNMP)", RFC 2572, April 1999

[RFC2574]   Blumenthal, U., and B. Wijnen, "User-based Security Model
            (USM) for version 3 of the Simple Network Management
            Protocol (SNMPv3)", RFC 2574, April 1999

[RFC1905]   Case, J., McCloghrie, K., Rose, M., and S. Waldbusser,
            "Protocol Operations for Version 2 of the Simple Network
            Management Protocol (SNMPv2)", RFC 1905, January 1996.

[RFC2573]   Levi, D., Meyer, P., and B. Stewart, "SNMPv3 Applications",
            RFC 2573, April 1999

[RFC2575]   Wijnen, B., Presuhn, R., and K. McCloghrie, "View-based
            Access Control Model (VACM) for the Simple Network
            Management Protocol (SNMP)", RFC 2575, April 1999

[RFC2570]   Case, J., Mundy, R., Partain, D., and B. Stewart,
            "Introduction to Version 3 of the Internet-standard Network
            Management Framework", RFC 2570, April 1999

[17] Narten, T., and H. Alvestrand, "Guidelines for Writing an IANA
     Considerations Section in RFCs.", RFC 2434, IBM, Maxware, October
     1998

[18] Andersson, L., Doolan, P., Feldman, N., Fredette, A., and Thomas,
     B., "LDP Specification.", draft-ietf-mpls-ldp-06.txt, Nortel
     Networks, Ennovate Networks, IBM, Nortel Networks, Cisco Systems
     October 1999

[19] Callon, R., Doolan, P., Feldman, N., Fredette, A., Swallow, G., and
     A. Viswanathan, "A Framework for Multiprotocol Label Switching",
     draft-ietf-mpls-framework-04.txt, IronBridge Networks, Ennovate
     Networks, IBM, Nortel Networks, Cisco Systems, July 1999.

[20] Rosen, E., Viswananthan, A., and R. Callon, "Multiprotocol Label
     Switching Architecture", draft-ietf-mpls-arch-06.txt, Cisco
     Systems, Lucent Technologies, and IronBridge Networks, August 1999.

[21] Jamoussi, B., editor, "Constraint-Based LSP Setup using LDP",
     draft-ietf-mpls-cr-ldp-02.txt, August 1999.

[22] Bradner, S., "Key words for use in RFCs to Indicate Requirement
     Levels", BCP 14, RFC 2119, Harvard University, March 1997

[23] Bradner, S., "The Internet Standards Process -- Revision 3", BCP 9,
     RFC 2026, Harvard University, October 1996

[24] Srinivansan, C., and A. Viswanathan, "MPLS Traffic Engineering
     Management Information Base Using SMIv2", draft-ietf-mpls-te-mib-
     01.txt, Lucent Technologies, June 1999.

[25] Srinivansan, C., and A. Viswanathan, "MPLS Label Switch Router
     Management Information Base Using SMIv2", draft-ietf-mpls-lsr-mib-
     00.txt, Lucent Technologies, June 1999.

[26] Greene, M., J. Cucchiara, J. Luciani, "Definition of Managed
     Objects for the NBMA Next Hop Resolution Protocol (NHRP)", RFC
     2677, August 1999.

[27] Internet Assigned Numbers Authority (IANA), ADDRESS FAMILY NUMBERS,
     (http://www.isi.edu/in-notes/iana/assignements/address-family-
     numbers), for MIB
     (ftp://ftp.isi.edu/mib/ianaaddressfamilynumbers.mib).

[28] Noto, M., E. Spiegel, K. Tesink, "Definition of Textual Conventions
     and OBJECT-IDENTITIES for ATM Management", RFC 2514, February 1999.

[29] McCloghrie, K., F. Kastenholz,  "The Interfaces Group MIB using
     SMIv2", RFC 2233, November 1997.

[30] Tesink, K. (ed.) "Definitions of Managed Objects for ATM
     Management", RFC 2515, February 1999.

[31] Grossman, D., and J. Heinanen, "Multiprotocol Encapsulation over
     ATM Adaptation Layer 5", RFC 2684, September 1999.

[32] Davie, B., J. Lawrence, K. McCloghrie, Y. Rekhter, E. Rosen, G.
     Swallow, and P. Doolan, "MPLS using LDP and ATM VC Switching",
     draft-ietf-mpls-atm-02.txt, April 1999.

9.  Security Considerations

   Assuming that secure network management (such as SNMP v3) is
   implemented, the objects represented in this MIB do not pose a threat
   to the security of the network.

10.  Authors' Addresses

                  James V. Luciani
                  Nortel Networks
                  3 Federal Street
                  Mail Stop:  BL3-03
                  Billerica, MA 01821
                  Phone: (978) 288-4734
                  Email: luciani@baynetworks.com

                  Hans Sjostrand
                  Ericsson
                  Business Unit Datacom Networks and IP Services
                  S-126 25 Stockholm, Sweden
                  Phone: +46 8 719 9960
                  Email: hans.sjostrand@etx.ericsson.se

                  Joan Cucchiara
                  IronBridge Networks
                  55 Hayden Ave., Suite 1000
                  Lexington, MA  02421
                  Phone: (781) 372-8236
                  Email: joan@ironbridgenetworks.com

11.  Full Copyright Statement

   Copyright (C) The Internet Society (1999). All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the  purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

12.  IANA Address Family Numbers MIB

   This section is copied verbatim from the RFC2677 [26]. This section
   will be removed in future versions of this draft.  This section was
   copied here for convenience, as it is IMPORTED into the LDP MIB.

   The Internet Assigned Numbers Authority (IANA) has been and continues
   to be responsible for maintaining the ADDRESS FAMILY NUMBERS
   (http://www.isi.edu/in-notes/iana/assignments/address-family-numbers)
   name space assignments.  The IANA has placed this list in a MIB
   module, such that it may be imported into other MIBs.  The motivation
   for doing this is to allow MIBs to not have to change when a new
   assignment is made to the ADDRESS FAMILY NUMBERS.  This is very
   similar to the motivation behind the IANAifType-MIB.

   Any additions or changes to the list of ADDRESS FAMILY NUMBERS
   registered via IANA will be done as they have in the past and this
   document does not propose any changes to the ADDRESS FAMILY NUMBERS
   other than to place them into a MIB, which can be found via anonymous
   FTP at: ftp://ftp.isi.edu/mib/ianaaddressfamilynumbers.mib.