Network Working Group                                       J. Cucchiara
Internet-Draft                                             Brix Networks
Expires July September 2000                                      H. Sjostrand
                                                                Ericsson
                                                              J. Luciani
                                                         Nortel Networks
                                                            January
                                                 TollBridge Technologies
                                                              March 2000

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

                     draft-ietf-mpls-ldp-mib-04.txt

                    <draft-ietf-mpls-ldp-mib-05.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
   http://www.ietf.org/shadow.html

   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    5
   3.5 The MPLS LDP General Group .................................    6
   3.5.1 The Label Distribution Protocol's Entity Table ...........    6
   3.5.2
        ...........................................................    6
   3.5.3 The Label Distribution Protocol's Entity ATM Objects .....    6
        Objects ...................................................    6    7
        Table .....................................................    7
   3.5.5
   3.5.6 The LDP Entity Peer Table ....................................... ................................    7
   3.5.6
   3.5.7 The LDP Hello Adjacencies Table ..........................    7
   3.5.8 The LDP Session Table ....................................    7
   3.5.7    8
   3.5.9 The LDP ATM Session Table ................................    7
   3.5.8    8
   3.5.10 The LDP Frame Relay Session Table ........................    7
   3.5.9 .......................    8
   3.5.11 The LDP Session Statistics Table .........................    7
   3.5.10 ........................    8
   3.5.12 The LDP Session Peer Address Table ......................    8
   3.5.11 The LDP Adjacencies Table ...............................    8
   3.5.12
   3.5.13 The LDP Label Information Base (LIB) Table ..............    8
   3.5.13
   3.5.14 The LDP FEC Table .......................................    8
   3.6 The LDP Notifications Group ................................    8    9
   3.6.1 LDP Notifications ........................................    8    9
   4 MPLS Label Distribution Protocol MIB Definitions .............    8    9
   5 Revision History .............................................   50   63
   5.1 Changes from <draft-ietf-mpls-ldp-mib-03.txt> <draft-ietf-mpls-ldp-mib-04.txt> ..............   50   63
   5.2 Changes from <draft-ietf-mpls-ldp-mib-02.txt> <draft-ietf-mpls-ldp-mib-03.txt> ..............   51   65
   5.3 Changes from <draft-ietf-mpls-ldp-mib-01.txt> <draft-ietf-mpls-ldp-mib-02.txt> ..............   52   66
   5.4 Changes from <draft-ietf-mpls-ldp-mib-01.txt> ..............   67
   5.5 Changes from <draft-ietf-mpls-ldp-mib-00.txt> ..............   53   68
   6 TO DO List ...................................................   53   69
   7 Acknowledgments ..............................................   54   69
   8 References ...................................................   55   70
   9 Security Considerations ......................................   57   72
   10 Authors' Addresses ..........................................   58   73
   11 Full Copyright Statement ....................................   58   74

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], STD 58, RFC 2579 [RFC2579] and
        STD 58, RFC 2580 [RFC2580].

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

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

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

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

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

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

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, mplsLdpEntityPeerTable, is a read-only table which
   records information learned via discovery. discovery or from the session
   initialization message.  Each row in the Peer EntityPeer Table represents
   a peer. peer which is known to a specific Entity.  This table carries
   information which is specific to the Entity-Peer interactions but is
   not appropriate for the mplsLdpSessionTable.

   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.  Row Creation in the MplsLdpEntity and Associated Tables

   It should be noted that special care should be taken if MIB objects
   which are used in the MPLS LDP Session Initialization need to be
   changed AFTER Session Initialization has occurred.  For example,
   currently there is no way to modify a Label Range once a session has
   been established.  Thus, in order to do this, the entire session with
   the peer needs to be torn down.  All information (LIB and FEC)
   learned during this session needs to be removed from the MIB.  Then
   and only then is it save to modify a Label Range.  After
   modification, the LDP Entity will need to go through the Session
   Initialization again, in order to communicate the new Label Ranges to
   the Peer and establish new sessions.

   Please see AdminStatus and RowStatus objects in these tables for more
   details.

3.5.3.  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 Parameter'
   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.

3.5.4.  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 Parameter'
   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.

3.5.5.  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.

3.5.6.  The LDP Entity Peer Table

   The LDP Entity Peer Table is a read-only table which contains
   information about LDP Peers and their associated Hello Adjacencies.  Each known to LDP Entities. A row in this
   table represents a is related to one or more rows in the Hello Adjacency.

3.5.6.  The LDP Session Table

   The LDP Session Adjacency Table is and
   one or more rows in the Session Table.  The information in the
   Entity-Peer table is relevant to a Peer but is not the same
   information that is used by the actual session(s) which are related
   to this Peer.  For example, the PathLimit information is gleaned from
   the session initialization phase but is not part of a session if
   there is a mismatch.  In the event of a mismatch, then the session
   will use the PathLimit set by the Entity (and not the Peer).

   A separate table allows for a  more comprehensive and coherent MIB
   model.

3.5.7.  The LDP Hello 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.

3.5.8.  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.

3.5.9.  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.

3.5.10.  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.

3.5.11.  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.

3.5.12.  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.

3.5.13.  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.

3.5.14.  The LDP FEC Table

   The FEC Table is a read-only table whic which 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 are two notifications:
   mplsLdpFailedInitSessionThresholdExceeded and
   mplsLdpPathVectorLimitMismatch.

   mplsLdpFailedInitSessionThresholdExceeded is one sent when the
   'mplsLdpEntityFailedInitSessionThreshold' is exceeded.  This
   notification which will should indicate to the operator that there may be a
   misconfigured mplsLdpEntityEntry because the session associated with
   this Entity is not being established, and the Entity keeps trying to
   establish the session.  A side effect of this situation is that a row
   in the mplsLdpSessionTable may not be reaching the operational state
   as indicated by the

   The mplsLdpPathVectorLimitMismatch notification is sent when an LDP
   attempts to initialize the same
   Entity's Path Vector Limit and the Peer's Path Vector Limit do not
   agree.  In this situation a session beyond could still be established
   between the configured
   threshold.

4.  MPLS Label Distribution Protocol MIB Definitions

     MPLS-LDP-MIB entity and the peer, using the Entity's Path Vector
   Limit.  For further details, please see Section 3.5.3 of the LDP
   Specification [18].

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, TruthValue,
         TimeStamp
         TimeStamp, StorageType, RowPointer
             FROM SNMPv2-TC
         InterfaceIndex
         InterfaceIndex, InterfaceIndexOrZero
             FROM IF-MIB
         -- AtmInterfaceType,
         AtmVcIdentifier, AtmVpIdentifier
         FROM ATM-TC-MIB
         AddressFamilyNumbers
             FROM IANA-ADDRESS-FAMILY-NUMBERS-MIB
         ;
     mplsLdpMIB MODULE-IDENTITY
         LAST-UPDATED "0001281200Z" "200003041200Z"  -- January 28, March 4, 2000
         ORGANIZATION "Multiprotocol Label Switching (mpls)
                       Working Group"
         CONTACT-INFO
             "Joan Cucchiara (jcucchiara@brixnet.com)
              Brix Networks

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

              James V. Luciani (jluciani@nortelnetworks.com)
              Nortel Networks" (jluciani@tollbridgetech.com)
              TollBridge Technologies"
         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))

     -- following label is taken from the draft-ietf-mpls-lsr-mib-00.txt
     -- draft-ietf-mpls-lsr-mib-01.txt
     -- It is reproduced here. here and modified to reflect
     -- the Frame Relay Forum's
     -- recent decision to drop 17-bit DLCI support,
     -- and other modifications.  Also, added
     -- reference 3. to REFERENCE clause.

     MplsLabel ::= TEXTUAL-CONVENTION
         STATUS        current
         DESCRIPTION
             "Represents an MPLS label.  Note that the contents of
             a The label  field contents are
             are interpreted in an interface-type specific fashion.  For example, to the label being represented.

             The label carried in
             the an MPLS shim header is 20 bits wide and
             (for LDP, the top  12
             bits  must Generic Label) is a 20-bit number
             represented by 4 octets. Bits 0-19 contain a
             label or a reserved label value.  Bits 20-31 MUST
             be zero.

             The frame relay label can be either 10, 17 10-bits or 23 bits wide
             23-bits depending on the  size
             of the DLCI field size and the top 22, 15,
             upper 22-bits or 9 bits upper 9-bits must be zero, respectively.

             For an ATM interface, label the  lowermost 16 bits are interpreted as lower 16-bits represents the VCI,
             the next  8 bits as 8-bits represents the VPI and the remaining
             bits
             must MUST be  zero.   Also  note the  permissible  label
             values  are  also a function of the interface  type.
             For  example,  the value 3 has special semantics  in
             the  control plane for an MPLS shim header label and
             is not a valid label value in the datapath." zero."
        REFERENCE
            "1.  MPLS 'MPLS Label Stack Encoding, Encoding', Rosen et al, al., draft-
             ietf-mpls-label-encaps-04.txt, April
             ietf-mpls-label-encaps-07.txt, September 1999.
             2.  Use 'Use of Label Switching on Frame Relay Networks, Networks',
             Conta et al, al., draft-ietf-mpls-fr-03.txt, Nov. 1998."
             November 1998.
             3. 'MPLS using LDP and ATM VC Switching', Davie et al.,
             draft-ietf-mpls-atm-02.txt, April 1999."
        SYNTAX       Integer32

     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)              INTEGER {
                                generic(1),
                                atm(2),
                                frameRelay(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 Protocol's
     -- 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      INTEGER {
                                none(1),
                                other(2),
                                hopCount(3),
                                pathVector(4),
                                hopCountAndPathVector(5)
                             }
         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

             none(1) -- Loop Detection is not support
             loop detection. supported
                        on this LSR.

             other(2) -- Loop Detection is supported but
                         by a method other than those
                         listed below.

             hopCount(3) -- Loop Detection is supported by
                            Hop Count only.

             pathVector(4) -- Loop Detection is supported by
                             Path Vector only.

             hopCountAndPathVector(5) -- Loop Detection is
                                  supported by both Hop Count
                                  And Path Vector.

             Since Loop Detection is determined during
             Session Initialization, an individual session
             may not be running with loop detection enabled. detection.  This
             object simply gives an indication of whether or not the
             LSR has the ability to support Loop Detection." Detection and
             which types."
         ::= { mplsLdpLsrObjects 3 }

     --
     -- The MPLS Label Distribution Protocol Entity Objects
     --
     mplsLdpEntityIndexNext  OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295) (0..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 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,
         mplsLdpEntityMaxPduLength                Unsigned32,
         mplsLdpEntityKeepAliveHoldTimer          Integer32,
         mplsLdpEntityHelloHoldTimer              Integer32,
         mplsLdpEntityFailedInitSessionTrapEnable INTEGER,
         mplsLdpEntityFailedInitSessionThreshold  Integer32,
         mplsLdpEntityControlMethod                 INTEGER,
         mplsLdpEntityLabelDistributionMethod     INTEGER,
         mplsLdpEntityLoopDetectionForPV
         mplsLdpEntityPVLimitMismatchTrapEnable   INTEGER,
         mplsLdpEntityPathVectorLimit             Integer32,
         mplsLdpEntityHopCountLoopDetection       INTEGER,
         mplsLdpEntityHopCount                    Unsigned32,
         mplsLdpEntityTargetedPeer                TruthValue,
         mplsLdpEntityTargetedPeerAddrType        AddressFamilyNumbers,
         mplsLdpEntityTargetedPeerAddr            MplsLdpGenAddr,
         mplsLdpEntityOptionalParameters          MplsLdpLabelTypes,
         mplsLdpEntityDiscontinuityTime           TimeStamp,
         mplsLdpEntityStorageType                 StorageType,
         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 is used as a secondary index to uniquely
             identify this row.  Before creating a row in this table,
             the 'mplsLdpEntityIndexNext' object should be retrieved.
             That value should be used for the value of this index
             when creating a row in this table.  (NOTE:  if a value
             of zero (0) is retrieved, that indicates that no rows
             can be created in this table at this time."
         ::= { mplsLdpEntityEntry 2 }

     mplsLdpEntityProtocolVersion OBJECT-TYPE
         SYNTAX      Integer32
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
            "The 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." Entity.
             If this object is changed from 'enable' to 'disable'
             and this entity has already attempted to establish
             contact with a Peer (which implies that the
             'mplsLdpEntityRowStatus' object has been set to
             'active'), then all contact with that
             Peer is lost and all information from that Peer
             needs to be removed from the MIB.

             At this point the user is able to change values
             which are related to this entity.

             When the admin status is set back to 'up', then
             this Entity will attempt to establish new sessions
             with the Peer."
         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

     mplsLdpEntityMaxPduLength OBJECT-TYPE
         SYNTAX      Integer32      Unsigned32 (0..65535)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
            "The maximum transmission unit (MTU) PDU Length that was configured
             for this entity." is sent in
            the Common Session Parameters of an Initialization
            Message. A value of 255 or less specifies the
            default maximum length of 4096 octets."
         REFERENCE
            "See Section on the 'Initialization Message' in the
            LDP Specification."
         ::= { mplsLdpEntityEntry 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 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 }

     mplsLdpEntityFailedInitSessionTrapEnable OBJECT-TYPE
         SYNTAX      INTEGER {
                                enabled(1),
                                disabled(2)
                             }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "Indicates whether the
             'mplsLdpFailedInitSessionThresholdExceeded'
             trap should be generated.

             If the value of this object is 'enabled(1)'
             then the trap will generated.  If the value
             of this object is 'disabled(2)' then the
             trap will not be generated.  The DEFVAL
             is set to 'enabled(1)'."
         DEFVAL { enabled }
         ::= { mplsLdpEntityEntry 10 }

     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 the SNMP notification,
             'mplsLdpFailedInitSessionThresholdExceeded', when exceeding
             the number of Session Initialization messages sent
             exceeds this threshold.

             A value of 0 (zero) for this object
             indicates that the threshold is infinity.
             In other words, a infinity, and
             the SNMP notification will not never be sent if
             when the value of this object is 0 (zero)."
         ::= { mplsLdpEntityEntry 10 }

     mplsLdpEntityControlMethod OBJECT-TYPE
         SYNTAX      INTEGER {
                        independent(1),
                        ordered(2)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "This object indicates whether the LSR is operating
             with independent or odered LSP control."
         ::= { mplsLdpEntityEntry 11 }

     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 12 }

     mplsLdpEntityLoopDetectionForPV

     mplsLdpEntityPVLimitMismatchTrapEnable OBJECT-TYPE
         SYNTAX      INTEGER {
                        disabled(0),
                        enabled(1)
                                enabled(1),
                                disabled(2)
                             }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "An indication of
             "Indicates whether loop detection based on path
vectors is
             disabled or enabled for this Entity. the 'mplsLdpPathVectorLimitMismatch'
             trap should be generated.

             If this object has a the value of disabled(0),
             then loop detection is disabled.  Otherwise, if this object is 'enabled(1)'
             then the trap will generated.  If the value
             of this object is 'disabled(2)' then the
             trap will not be generated.  The DEFVAL
             is set to 'enabled(1)'."
         DEFVAL { enabled }
         ::= { mplsLdpEntityEntry 13 }

     mplsLdpEntityPathVectorLimit OBJECT-TYPE
         SYNTAX      Integer32 (0..255)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "If the value of this object is 0 (zero) then
             Loop Dection for Path Vectors is disabled.

             Otherwise, if this object has a value greater than
             zero, then Loop Dection for Path Vectors is enabled,
             and the Path Vector Limit is this value.
             Also, the value of the object,
             'mplsLdpLsrLoopDetectionCapable', must be set to
             either 'pathVector(4)' or 'hopCountAndPathVector(5)',
             if this object has a value greater than 0 (zero)."
         ::= { mplsLdpEntityEntry 14 }

     mplsLdpEntityHopCountLoopDetection OBJECT-TYPE
         SYNTAX     INTEGER {
                               disabled(0),
                               enabled(1)
                            }
         MAX-ACCESS read-create
         STATUS     current
         DESCRIPTION
             "An indication of enabled(1), whether loop detection based
             on hop count is disabled or enabled for this
             Entity.  If this object has the value of
             'disabled(0)', then loop detection using
             hop counts is disabled.

             Otherwise, if this object has a value of 'enabled(1)',
             then loop detection based on path
vectors hop counts is enabled." enabled.
             Also, the value of the object,
             'mplsLdpLsrLoopDetectionCapable', must have the value
             of either: 'hopCount(3)' or 'hopCountAndPathVector(5)'."
         ::= { mplsLdpEntityEntry 13 15 }

     mplsLdpEntityPathVectorLimit

     mplsLdpEntityHopCount  OBJECT-TYPE
         SYNTAX      Integer32      Unsigned32 (0..255)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "If the value of 'mplsLdpEntityLoopDetectionForPV' 'mplsLdpEntityHopCountLoopDetection'
             for this entry is 'enabled(1)', the then this object
             represents that Path Vector
Limit the initial Hop Count for this Entity.

             If the value of 'mplsLdpEntityLoopDetectionForPV' for this
entry 'mplsLdpEntityHopCountLoopDetection'
             is 'disabled(0)', then this the value should be 0 (zero)." of this object is
             undefined."
         ::= { mplsLdpEntityEntry 14 16 }

     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 15 17 }

     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 16 18 }

     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 17 19 }

     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 18 20 }

     mplsLdpEntityRowStatus

     mplsLdpEntityDiscontinuityTime OBJECT-TYPE
         SYNTAX      RowStatus      TimeStamp
         MAX-ACCESS  read-create  read-only
         STATUS      current
         DESCRIPTION
                  "An object that allows entries in
             "The value of sysUpTime on the most recent occasion
             at which any one or more of this table to
                  be created and deleted using entity's counters
             suffered a discontinuity.  The relevant counters are the
                  RowStatus convention."
         ::= { mplsLdpEntityEntry 19
             specific instances associated with this entity of
             any Counter32, or Counter64 object contained
             in the 'mplsLdpEntityStatsTable'.  If no such
             discontinuities have occurred since the last
             re-initialization of the local management
             subsytem, then this object contains a zero
             value."
         ::= { mplsLdpEntityEntry 21 }

     mplsLdpEntityStorageType  OBJECT-TYPE
         SYNTAX      StorageType
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "The storage type for this entry."
         ::= { mplsLdpEntityEntry 22 }

     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.

              Once the 'mplsLdpEntityAdminStatus' object has
              the value of 'up' and this object has the value
              of 'active' then the Entity will atttempt to
              contact an LDP Peer.  If the value of this object
              is changed to 'notInService', then the Entity looses
              contact with the LDP Peer and all information related
              to that Peer must be removed from the MIB.  This has
              the same effect as changing 'mplsLdpEntityAdminStatus'
              from 'enable' to 'disable'.

              When this object is set to 'active' and the value of
              the 'mplsLdpEntityAdminStatus' is 'enable' then
              this Entity will attempt to contact the Peer and
              establish new sessions."
         ::= { mplsLdpEntityEntry 23 }

     --
     -- Ldp Entity Objects for ATM Generic Labels
     --

     mplsLdpEntityAtmObjects

     mplsLdpEntityGenericObjects  OBJECT IDENTIFIER ::=
                                   { mplsLdpEntityObjects 3 }

     mplsLdpEntityAtmParmsTable

     mplsLdpEntityConfGenericTable  OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpEntityAtmParmsEntry MplsLdpEntityConfGenericEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table contains information about the
             ATM specific information which could be used
             in provides a way to configure Generic Labels
             associated with LDP entities on the 'Optional Parameters' and other ATM specific
             information." LSR."
         ::= { mplsLdpEntityAtmObjects mplsLdpEntityGenericObjects 1 }

     mplsLdpEntityAtmParmsEntry

     mplsLdpEntityConfGenericEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityAtmParmsEntry      MplsLdpEntityConfGenericEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table represents provides a way to configure
             a 'Generic Label' for LDP.

             An entry in the ATM parameters
             and ATM information 'mplsLdpEntityTable' will only have
             associated entries in this Table if Generic Labels
             are configured for a specific 'mplsLdpEntityEntry'.
             Thus, not every 'mplsLdpEntityEntry' will have
             associated entries in this LDP entity."
         INDEX       {  mplsLdpEntityLdpId, mplsLdpEntityIndex  }
         ::= { mplsLdpEntityAtmParmsTable 1 }
     MplsLdpEntityAtmParmsEntry ::= table.

             The InterfaceIndex value for a Generic Label is
             from the 'ifLayer' where the label is created.  Likewise,
             the ifType of the interface is the 'ifLayer' where the
             label is created.  For example, if an implementation
             creates the generic label at the ifLayer which
             has the 'ifType' of 'mpls', then the
             'mplsLdpConfGenericIfIndexOrZero' object
             should be set to the value of the InterfaceIndex
             for this 'ifLayer'.

             If the value of 'mplsLdpConfGenericIfIndexOrZero' is zero
             then the InterfaceIndex value of this object is not known.
             If this Generic Label is used, i.e. a session has been
             established successfully and data is forwarded using this
             label, then the value of the
             'mplsLdpConfGenericIfIndexOrZero'  object MUST be
             updated by the network management  entity
             (e.g. SNMP agent) to reflect the InterfaceIndex
             value for the 'ifLayer' that created  the Generic Label.

             To summarize, not all implementations may assign ifIndices
             at a label's creation time, thus, an ifIndex value
             may not be known, until a subsequent time.  However,
             once that ifIndex value is known, the
             'mplsLdpConfGenericIfIndexOrZero' object
             should be changed to reflect the ifIndex value."
         INDEX       {  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex,
                        mplsLdpConfGenericIndex
                     }
         ::= { mplsLdpEntityConfGenericTable 1 }

     MplsLdpEntityConfGenericEntry ::= SEQUENCE {
         mplsLdpEntityAtmMergeCap                   INTEGER,
         mplsLdpEntityAtmLabelRangeComponents
         mplsLdpConfGenericIndex          Unsigned32,
         mplsLdpEntityAtmVcDirectionality           INTEGER,
         mplsLdpEntityAtmLsrConnectivity            INTEGER,
         mplsLdpEntityDefaultControlVpi             AtmVpIdentifier,
         mplsLdpEntityDefaultControlVci             AtmVcIdentifier,
         mplsLdpEntityUnlabTrafVpi                  AtmVpIdentifier,
         mplsLdpEntityUnlabTrafVci                  AtmVcIdentifier,
         mplsLdpEntityAtmRowStatus
         mplsLdpConfGenericIfIndexOrZero  InterfaceIndexOrZero,
         mplsLdpConfGenericLabel          Unsigned32,
         mplsLdpConfGenericStorageType    StorageType,
         mplsLdpConfGenericRowStatus      RowStatus
     }

     mplsLdpEntityAtmMergeCap

     mplsLdpConfGenericIndex OBJECT-TYPE
         SYNTAX      INTEGER {
                         notSupported(0),
                         vpMerge(1),
                         vcMerge(2),
                         vpAndVcMerge(3)
                     }      Unsigned32(1..4294967295)
         MAX-ACCESS  read-create  not-accessible
         STATUS      current
         DESCRIPTION
                  "Denotes
            "This index is used to distinguish between multiple
            Generic Labels configured for the Merge Capability of this same LDP Entity."
         ::= { mplsLdpEntityAtmParmsEntry mplsLdpEntityConfGenericEntry 1 }

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

     mplsLdpEntityAtmVcDirectionality OBJECT-TYPE
         SYNTAX      INTEGER {
                                bidirectional(0),
                                unidirectional(1)
                             }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "If the Generic Label was created, or
            0 (zero).  The value of this object zero means that the InterfaceIndex
            is 'bidirectional(0)',
             a given VCI, within a given VPI, not known.  For example, if the InterfaceIndex is used as a
             label
            created subsequent to the Generic Label's creation, then
            it would not be known.  However, if the InterfaceIndex
            is known, then it must be represented by this value.

            If an InterfaceIndex becomes known, then the
            network management entity (e.g. SNMP agent) responsible
            for both directions independently. this object MUST change the value from 0 (zero) to the
            value of the InterfaceIndex.  If this Generic Label is
            being used in forwarding data, then the value of this
            object is 'unidirectional(1)',
             a given VCI within a VPI designates one direction." MUST be the InterfaceIndex."
         ::= { mplsLdpEntityAtmParmsEntry 3 mplsLdpEntityConfGenericEntry 2 }

     mplsLdpEntityAtmLsrConnectivity

     mplsLdpConfGenericLabel OBJECT-TYPE
         SYNTAX      INTEGER {
                        direct(1),
                        indirect(2)
                     }      Unsigned32(0..1048575)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
            "The peer LSR may be connected indirectly by means value of an
             ATM VP so that the VPI values may be different on either
             endpoint so this object represents the label MUST be encoded entirely within Generic Label
            used in the
             VCI field." Generic Label TLV."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt,
            "Generic Label TLV Section 7"
         DEFVAL { direct } of the LDP Specification."
         ::= { mplsLdpEntityAtmParmsEntry 4 mplsLdpEntityConfGenericEntry 3 }

     mplsLdpEntityDefaultControlVpi

     mplsLdpConfGenericStorageType  OBJECT-TYPE
         SYNTAX      AtmVpIdentifier      StorageType
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "The default VPI value storage type 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 } entry."
         ::= { mplsLdpEntityAtmParmsEntry 5 mplsLdpEntityConfGenericEntry 4 }

     mplsLdpEntityDefaultControlVci

     mplsLdpConfGenericRowStatus OBJECT-TYPE
         SYNTAX      AtmVcIdentifier      RowStatus
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The Default VCI value for a non-MPLS connection.  The
             default value of
            "An object that allows entries in this is 32 but other values may table to
             be
             configured. created and deleted using the
             RowStatus convention.

             NOTE:  This RowStatus object allows a different should
             have the same value of the 'mplsLdpEntityRowStatus'
             related to
             be configured."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt, Section 7.1"
         DEFVAL
             { 32 } this entry."
         ::= { 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 mplsLdpEntityConfGenericEntry 5 }

     --
     -- Ldp Entity Objects for ATM
     --

     mplsLdpEntityAtmObjects  OBJECT IDENTIFIER ::=
                                   { mplsLdpEntityAtmParmsEntry 7 mplsLdpEntityObjects 4 }

     mplsLdpEntityUnlabTrafVci

     mplsLdpEntityAtmParmsTable  OBJECT-TYPE
         SYNTAX      AtmVcIdentifier      SEQUENCE OF MplsLdpEntityAtmParmsEntry
         MAX-ACCESS  read-create  not-accessible
         STATUS      current
         DESCRIPTION
             "VCI value of
             "This table contains information about the VCC supporting unlabelled traffic.
             This non-MPLS connection is
             ATM specific information which could be used to carry unlabelled (IP)
packets."
         DEFVAL  { 32 }
             in the 'Optional Parameters' and other ATM specific
             information."
         ::= { mplsLdpEntityAtmParmsEntry 8 mplsLdpEntityAtmObjects 1 }

     mplsLdpEntityAtmRowStatus

     mplsLdpEntityAtmParmsEntry OBJECT-TYPE
         SYNTAX      RowStatus      MplsLdpEntityAtmParmsEntry
         MAX-ACCESS  read-create  not-accessible
         STATUS      current
         DESCRIPTION
             "An object that allows entries entry in this table to
             be created and deleted using represents the
             RowStatus convention."
         ::= { mplsLdpEntityAtmParmsEntry 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 parameters
             and 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' information for LDP Entities.

             LDP Entities which use ATM must have at least one
             entry in this table." LDP entity."
         INDEX       {  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex
                     }
         ::= { mplsLdpEntityAtmObjects 2 mplsLdpEntityAtmParmsTable 1 }

     mplsLdpEntityConfAtmLabelRangeEntry

     MplsLdpEntityAtmParmsEntry ::= SEQUENCE {
         mplsLdpEntityAtmIfIndexOrZero        InterfaceIndexOrZero,
         mplsLdpEntityAtmMergeCap             INTEGER,
         mplsLdpEntityAtmLabelRangeComponents Unsigned32,
         mplsLdpEntityAtmVcDirectionality     INTEGER,
         mplsLdpEntityAtmLsrConnectivity      INTEGER,
         mplsLdpEntityDefaultControlVpi       AtmVpIdentifier,
         mplsLdpEntityDefaultControlVci       AtmVcIdentifier,
         mplsLdpEntityUnlabTrafVpi            AtmVpIdentifier,
         mplsLdpEntityUnlabTrafVci            AtmVcIdentifier,
         mplsLdpEntityAtmStorageType          StorageType,
         mplsLdpEntityAtmRowStatus            RowStatus
     }
     mplsLdpEntityAtmIfIndexOrZero  OBJECT-TYPE
         SYNTAX MplsLdpEntityConfAtmLabelRangeEntry      InterfaceIndexOrZero
         MAX-ACCESS not-accessible  read-create
         STATUS      current
         DESCRIPTION
             "A row in
            "This value represents either the InterfaceIndex of
            the 'ifLayer' where the LDP Entity Configurable ATM Label
             Range Table.  One entry in Labels 'owned' by this table contains
             information on a single range
            entry were created, or 0 (zero).  The value of labels
             represented by the configured Upper and Lower
             Bounds VPI/VCI pairs.  These are the same
             data used in zero
            means that the Initialization Message.

             NOTE:  The ranges for a specific LDP Entity
             are UNIQUE and non-overlapping. InterfaceIndex is not known.  For example,
             for a specific LDP Entity index, there could
            if the InterfaceIndex is created subsequent to the
            ATM Label's creation, then it would not 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. known.
            However, there could not if the InterfaceIndex is known, then it must
            be
             a third entry with ConfLowerBound vpi/vci == 0/200 and
             ConfUpperBound vpi/vci == 0/300 because represented by this label range
overlaps
             with value.

            If an InterfaceIndex becomes known, then 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
            network management entity (e.g. SNMP agent) responsible
            for a specific LDP Entity this object MUST include change the default VPI/VCI
             values denoted value from 0 (zero) to the
            value of the InterfaceIndex.  If an ATM Label is
            being used in forwarding data, then the LDP Entity Table."
         INDEX       {  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex,
                        mplsLdpEntityConfAtmLabelRangeMinimumVpi,
                        mplsLdpEntityConfAtmLabelRangeMinimumVci
                     } value of this
            object MUST be the InterfaceIndex."
         ::= { mplsLdpEntityConfAtmLabelRangeTable mplsLdpEntityAtmParmsEntry 1 }

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

     mplsLdpEntityConfAtmLabelRangeMinimumVpi

     mplsLdpEntityAtmMergeCap OBJECT-TYPE
         SYNTAX AtmVpIdentifier
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "The minimum VPI number configured for this range."
         ::=      INTEGER { mplsLdpEntityConfAtmLabelRangeEntry 1
                         notSupported(0),
                         vpMerge(1),
                         vcMerge(2),
                         vpAndVcMerge(3)
                     }
     mplsLdpEntityConfAtmLabelRangeMinimumVci OBJECT-TYPE
         SYNTAX AtmVcIdentifier
         MAX-ACCESS not-accessible  read-create
         STATUS      current
         DESCRIPTION
             "The minimum VCI number configured for
                  "Denotes the Merge Capability of this range." Entity."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry mplsLdpEntityAtmParmsEntry 2 }

     mplsLdpEntityConfAtmLabelRangeMaximumVpi

     mplsLdpEntityAtmLabelRangeComponents OBJECT-TYPE
         SYNTAX AtmVpIdentifier      Unsigned32 (1..65535)
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The maximum VPI
             "Number of LabelRange Components in the Initialization
             message.  This also represents the number configured for of entries
             in the mplsLdpLabelRangeComponentsTable which correspond
             to this range." entry."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry mplsLdpEntityAtmParmsEntry 3 }

     mplsLdpEntityConfAtmLabelRangeMaximumVci

     mplsLdpEntityAtmVcDirectionality OBJECT-TYPE
         SYNTAX AtmVcIdentifier      INTEGER {
                                bidirectional(0),
                                unidirectional(1)
                             }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "The maximum VCI number configured
             "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 range." object is 'unidirectional(1)',
             a given VCI within a VPI designates one direction."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry mplsLdpEntityAtmParmsEntry 4 }

     mplsLdpEntityConfAtmLabelRangeRowStatus

     mplsLdpEntityAtmLsrConnectivity OBJECT-TYPE
         SYNTAX RowStatus      INTEGER {
                        direct(1),
                        indirect(2)
                     }
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "An object
             "The peer LSR may be connected indirectly by means of an
             ATM VP so that allows entries in this
                  table to the VPI values may be created and deleted using different on either
             endpoint so 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'."
         ::= label MUST be encoded entirely within the
             VCI field."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt, Section 7"
         DEFVAL { mplsLdpEntityConfAtmLabelRangeEntry 5 direct }

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

     mplsLdpEntityFrameRelayObjects OBJECT IDENTIFIER
         ::= { mplsLdpEntityObjects 4 mplsLdpEntityAtmParmsEntry 5 }

     mplsLdpEntityFrameRelayParmsTable

     mplsLdpEntityDefaultControlVpi OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpEntityFrameRelayParmsEntry      AtmVpIdentifier
         MAX-ACCESS  not-accessible  read-create
         STATUS      current
         DESCRIPTION
             "This table contains information about
             "The default VPI value for the
             Optional Parameters to specify what non-MPLS connection.  The
             default value of this Entity is
             going 0 (zero) but other values may
             be configured.  This object allows a different value
             to specify for Frame Relay specific
             LDP Intialization Messages." be configured."
         REFERENCE
            "draft-ietf-mpls-atm-02.txt, Section 7.1"
         DEFVAL
             { 0 }
         ::= { mplsLdpEntityFrameRelayObjects 1 mplsLdpEntityAtmParmsEntry 6 }

     mplsLdpEntityFrameRelayParmsEntry

     mplsLdpEntityDefaultControlVci OBJECT-TYPE
         SYNTAX      MplsLdpEntityFrameRelayParmsEntry      AtmVcIdentifier
         MAX-ACCESS  not-accessible  read-create
         STATUS      current
         DESCRIPTION
             "An entry in
             "The Default VCI value for a non-MPLS connection.  The
             default value of this table represents the Frame Relay
             optional parameters associated with the LDP entity."
         INDEX       {  mplsLdpEntityLdpId, mplsLdpEntityIndex  }
         ::= 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
             { mplsLdpEntityFrameRelayParmsTable 1 32 }

     MplsLdpEntityFrameRelayParmsEntry
         ::= SEQUENCE {
         mplsLdpEntityFrMergeCap                     INTEGER,
         mplsLdpEntityFrLabelRangeComponents         Unsigned32,
         mplsLdpEntityFrVcDirectionality             INTEGER,
         mplsLdpEntityFrParmsRowStatus               RowStatus mplsLdpEntityAtmParmsEntry 7 }

     mplsLdpEntityFrMergeCap

     mplsLdpEntityUnlabTrafVpi OBJECT-TYPE
         SYNTAX      INTEGER {
                         notSupported(0),
                         supported(1)
                     }      AtmVpIdentifier
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "This represents whether or not Frame Relay merge
capability
             "VPI value of the VCC supporting unlabelled traffic.  This
             non-MPLS connection is supported." used to carry unlabelled (IP)
             packets."
         DEFVAL  { 0 }
         ::= { mplsLdpEntityFrameRelayParmsEntry 1 mplsLdpEntityAtmParmsEntry 8 }

     mplsLdpEntityFrLabelRangeComponents

     mplsLdpEntityUnlabTrafVci OBJECT-TYPE
         SYNTAX      Unsigned32 (1..65535)      AtmVcIdentifier
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
             "Number
             "VCI value of LabelRange Components in the Initialization
             message. VCC supporting unlabelled traffic.
             This also represents the number of entries
             in the mplsLdpEntityConfFrLabelRangeTable which correspond non-MPLS connection is used to this entry." carry unlabelled (IP)
             packets."
         DEFVAL  { 32 }
         ::= { mplsLdpEntityFrameRelayParmsEntry 2 mplsLdpEntityAtmParmsEntry 9 }

     mplsLdpEntityFrVcDirectionality

     mplsLdpEntityAtmStorageType  OBJECT-TYPE
         SYNTAX      INTEGER      StorageType
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "The storage type for this entry."
         ::= {
                               bidirectional(0),
                               unidirection(1) mplsLdpEntityAtmParmsEntry 10 }

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

             NOTE:  This RowStatus object is 'bidirectional(0)', then should
             have the LSR supports same value of 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 'mplsLdpEntityRowStatus'
             related to
                  be created and deleted using the
                  RowStatus convention." this entry."
         ::= { mplsLdpEntityFrameRelayParmsEntry 4 mplsLdpEntityAtmParmsEntry 11 }

     --
     -- Frame Relay The MPLS LDP Entity Configurable ATM Label Range Components Table
     --

     mplsLdpEntityConfFrLabelRangeTable

     mplsLdpEntityConfAtmLabelRangeTable OBJECT-TYPE
         SYNTAX SEQUENCE OF MplsLdpEntityConfFrLabelRangeEntry MplsLdpEntityConfAtmLabelRangeEntry
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "This table contains information about the
             Optional Parameters to specify what this
             "The MPLS LDP Entity Configurable ATM Label Range Table.
             The purpose of this table is
             going to specify provide a mechanism
             for specifying a contiguous range of vpi's
             with a contiguous range of vci's, or a 'label range'
             for Frame Relay specific LDP Intialization Messages." Entities.

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

     mplsLdpEntityConfFrLabelRangeEntry

     mplsLdpEntityConfAtmLabelRangeEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityConfFrLabelRangeEntry MplsLdpEntityConfAtmLabelRangeEntry
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "An
             "A row in the LDP Entity Configurable ATM Label
             Range Table.  One entry in this table represents the Frame Relay
             optional parameters associated with contains
             information on a single range of labels
             represented by the LDP entity."
         INDEX       {  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex,
                        mplsLdpConfFrMinimumDlci
                     }
         ::= { mplsLdpEntityConfFrLabelRangeTable 1 }

     MplsLdpEntityConfFrLabelRangeEntry ::= SEQUENCE {
         mplsLdpConfFrMinimumDlci                  Integer32,
         mplsLdpConfFrMaximumDlci                  Integer32,
         mplsLdpConfFrLen                          INTEGER,
         mplsLdpConfFrRowStatus                    RowStatus
     }

     mplsLdpConfFrMinimumDlci OBJECT-TYPE
         SYNTAX      Integer32(0..4194303)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "The lower bound which is supported.  This value should
             be configured Upper and Lower
             Bounds VPI/VCI pairs.  These are the same as that
             data used in the Frame Relay Label Range
Component's
             Minimum DLCI field."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 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,
                        mplsLdpEntityConfAtmLabelRangeMinimumVpi,
                        mplsLdpEntityConfAtmLabelRangeMinimumVci
                     }
         ::= { mplsLdpEntityConfAtmLabelRangeTable 1 }

     mplsLdpConfFrMaximumDlci

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

     mplsLdpEntityConfAtmLabelRangeMinimumVpi OBJECT-TYPE
         SYNTAX      Integer32 (0..4194303) AtmVpIdentifier
         MAX-ACCESS  read-create not-accessible
         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." minimum VPI number configured for this range."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 2 mplsLdpEntityConfAtmLabelRangeEntry 1 }

     mplsLdpConfFrLen

     mplsLdpEntityConfAtmLabelRangeMinimumVci OBJECT-TYPE
         SYNTAX      INTEGER AtmVcIdentifier
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "The minimum VCI number configured for this range."
         ::= {
                         tenDlciBits(0),
                         seventeenDlciBits(1),
                         twentyThreeDlciBits(2) mplsLdpEntityConfAtmLabelRangeEntry 2 }

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

     mplsLdpConfFrRowStatus

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

     mplsLdpEntityConfAtmLabelRangeStorageType  OBJECT-TYPE
         SYNTAX      StorageType
         MAX-ACCESS  read-create
         STATUS      current
         DESCRIPTION
                  "The storage type for this entry."
         ::= { mplsLdpEntityConfAtmLabelRangeEntry 5 }

     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.

                  If the value of the object
'mplsLdpEntityOptionalParameters'
                  contains the value of
'frameReleaySessionParameters(3)' then
                  there

             There must be exist at least one corresponding entry in this
table."
             table for every LDP Entity that has
             'mplsLdpEntityOptionalParameters' object with
             a value of 'atmSessionParameters'.

             NOTE:  This RowStatus object should
             have the same value of the 'mplsLdpEntityRowStatus'
             related to this entry."
         ::= { mplsLdpEntityConfFrLabelRangeEntry 4 mplsLdpEntityConfAtmLabelRangeEntry 6 }

     --
     -- The MPLS LDP Ldp Entity Statistics Table Objects for Frame Relay
     --

     mplsLdpEntityStatsTable

     mplsLdpEntityFrameRelayObjects OBJECT IDENTIFIER ::=
                                         { mplsLdpEntityObjects 5 }

     mplsLdpEntityFrameRelayParmsTable  OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpEntityStatsEntry MplsLdpEntityFrameRelayParmsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table is a read-only table which augments contains information about the mplsLdpEntityTable.  The purpose of
             Optional Parameters to specify what this
             table Entity is
             going to keep statistical information about
             the specify for Frame Relay specific
             LDP Entities on the LSR." Intialization Messages."
         ::= { mplsLdpEntityObjects 5 mplsLdpEntityFrameRelayObjects 1 }

     mplsLdpEntityStatsEntry
     mplsLdpEntityFrameRelayParmsEntry OBJECT-TYPE
         SYNTAX      MplsLdpEntityStatsEntry      MplsLdpEntityFrameRelayParmsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A row
             "An entry 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 represents the Frame Relay
             optional parameters 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 LDP entity."
         INDEX       {   mplsLdpEntityEntry  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex
                     }
         ::= { mplsLdpEntityStatsTable mplsLdpEntityFrameRelayParmsTable 1 }

     MplsLdpEntityStatsEntry

     MplsLdpEntityFrameRelayParmsEntry ::= 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
         mplsLdpEntityFrIfIndexOrZero        InterfaceIndexOrZero,
         mplsLdpEntityFrMergeCap             INTEGER,
         mplsLdpEntityFrLabelRangeComponents Unsigned32,
         mplsLdpEntityFrLen                  INTEGER,
         mplsLdpEntityFrVcDirectionality     INTEGER,
         mplsLdpEntityFrParmsStorageType     StorageType,
         mplsLdpEntityFrParmsRowStatus       RowStatus
     }

     mplsLdpAttemptedSessions

     mplsLdpEntityFrIfIndexOrZero OBJECT-TYPE
         SYNTAX      Counter32      InterfaceIndexOrZero
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "A count
            "This value represents either the InterfaceIndex of
            the total attempted sessions 'ifLayer' where the Frame Relay Labels 'owned' by this
            entry were created, or 0 (zero).  The value of zero
            means that the InterfaceIndex is not known.  For example,
            if the InterfaceIndex is created subsequent to the
            Frame Relay Label's creation, then it would not be known.
            However, if the InterfaceIndex is known, then it must
            be represented by this value.

            If an InterfaceIndex becomes known, then the
            network management entity (e.g. SNMP agent) responsible
            for this LDP Entity." object MUST change the value from 0 (zero) to the
            value of the InterfaceIndex.  If an Frame Relay Label is
            being used in forwarding data, then the value of this
            object MUST be the InterfaceIndex."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 1 }

     mplsLdpSessionRejectedNoHelloErrors

     mplsLdpEntityFrMergeCap OBJECT-TYPE
         SYNTAX      Counter32      INTEGER {
                         notSupported(0),
                         supported(1)
                     }
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "A count of the Session Rejected/No Hello Error
             Notification Messages sent
             "This represents whether or received by
             this LDP Entity." not Frame Relay merge
             capability is supported."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 2 }

     mplsLdpSessionRejectedAdvertisementErrors

     mplsLdpEntityFrLabelRangeComponents OBJECT-TYPE
         SYNTAX      Counter32      Unsigned32 (1..65535)
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "A count
             "Number of LabelRange Components in the Session Rejected/Parameters
             Advertisement Mode Error Notification Messages sent
             or received by Initialization
             message.  This also represents the number of entries
             in the mplsLdpEntityConfFrLabelRangeTable which correspond
             to this LDP Entity." entry."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 3 }

     mplsLdpSessionRejectedMaxPduErrors

     mplsLdpEntityFrLen OBJECT-TYPE
         SYNTAX      Counter32      INTEGER {
                         tenDlciBits(0),
                         twentyThreeDlciBits(2)
                     }
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "A count of
             "This object specifies the Session Rejected/Parameters
             Max Pdu Length Error Notification Messages sent
             or received by this LDP Entity." DLCI bits."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 4 }

     mplsLdpSessionRejectedLabelRangeErrors

     mplsLdpEntityFrVcDirectionality OBJECT-TYPE
         SYNTAX      Counter32      INTEGER {
                               bidirectional(0),
                               unidirection(1)
                             }
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "A count
             "If the value of this object is 'bidirectional(0)', then
             the Session Rejected/Parameters
             Label Range Notification Notification Messages sent
             or received by LSR supports the use of a given DLCI as a label for
             both directions independently.  If the value of
             this LDP Entity." object is 'unidirectional(1)', then the LSR
             uses the given DLCI as a label in only one direction."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 5 }

     mplsLdpBadLdpIdentifierErrors

     mplsLdpEntityFrParmsStorageType  OBJECT-TYPE
         SYNTAX      Counter32      StorageType
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "This object counts the number of Bad LDP Identifier Fatal
             Errors detected by the session(s) (past and present)
associated
             with
                  "The storage type for this LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2." entry."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 6 }

     mplsLdpBadPduLengthErrors

     mplsLdpEntityFrParmsRowStatus OBJECT-TYPE
         SYNTAX      Counter32      RowStatus
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "This
             "An object counts that allows entries in this table to
             be created and deleted using the number
             RowStatus convention.

             NOTE:  This RowStatus object should
             have the same value of Bad Pdu Length Fatal
             Errors detected by the session(s) (past and present)
associated
             with 'mplsLdpEntityRowStatus'
             related to this LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2." entry."
         ::= { mplsLdpEntityStatsEntry mplsLdpEntityFrameRelayParmsEntry 7 }

     mplsLdpBadMessageLengthErrors

     --
     -- Frame Relay Label Range Components
     --

     mplsLdpEntityConfFrLabelRangeTable  OBJECT-TYPE
         SYNTAX      Counter32      SEQUENCE OF MplsLdpEntityConfFrLabelRangeEntry
         MAX-ACCESS  read-only  not-accessible
         STATUS      current
         DESCRIPTION
             "This object counts the number of Bad Message Length Fatal
             Errors detected by table contains information about the session(s) (past and present)
associated
             with
             Optional Parameters to specify what this Entity is
             going to specify for Frame Relay specific
             LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2." Intialization Messages."
         ::= { mplsLdpEntityStatsEntry 8 mplsLdpEntityFrameRelayObjects 2 }

     mplsLdpBadTlvLengthErrors

     mplsLdpEntityConfFrLabelRangeEntry OBJECT-TYPE
         SYNTAX      Counter32      MplsLdpEntityConfFrLabelRangeEntry
         MAX-ACCESS  read-only  not-accessible
         STATUS      current
         DESCRIPTION
             "This object counts the number of Bad TLV Length Fatal
             Errors detected by
             "An entry in this table represents the session(s) (past and present) Frame Relay
             optional parameters associated with this the LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2." entity."
         INDEX       {  mplsLdpEntityLdpId,
                        mplsLdpEntityIndex,
                        mplsLdpConfFrMinimumDlci
                     }
         ::= { mplsLdpEntityStatsEntry 9 mplsLdpEntityConfFrLabelRangeTable 1 }

     mplsLdpMalformedTlvValueErrors

     MplsLdpEntityConfFrLabelRangeEntry ::= SEQUENCE {
         mplsLdpConfFrMinimumDlci                  Integer32,
         mplsLdpConfFrMaximumDlci                  Integer32,
         mplsLdpConfFrStorageType                  StorageType,
         mplsLdpConfFrRowStatus                    RowStatus
     }

     mplsLdpConfFrMinimumDlci OBJECT-TYPE
         SYNTAX      Counter32      Integer32(0..4194303)
         MAX-ACCESS  read-only  not-accessible
         STATUS      current
         DESCRIPTION
             "This object counts
             "The lower bound which is supported.  This value should
             be the number of Malformed TLV Value Fatal
             Errors detected by same as that in the session(s) (past and present)
associated
             with this LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2." Frame Relay Label Range
             Component's Minimum DLCI field."
         ::= { mplsLdpEntityStatsEntry 10 mplsLdpEntityConfFrLabelRangeEntry 1 }

     mplsLdpKeepAliveTimerExpiredErrors

     mplsLdpConfFrMaximumDlci OBJECT-TYPE
         SYNTAX      Counter32      Integer32 (0..4194303)
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "This object counts
             "The upper bound which is supported.  This value should
             be the number of Session Keep Alive Timer
             Expired Errors detected by same as that in the session(s) (past and
present)
             associated with this LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2." Frame Relay Label Range
             Component's Maximum DLCI field."
         ::= { mplsLdpEntityStatsEntry 11 mplsLdpEntityConfFrLabelRangeEntry 2 }

     mplsLdpShutdownNotifReceived

     mplsLdpConfFrStorageType  OBJECT-TYPE
         SYNTAX      Counter32      StorageType
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "This object counts the number of Shutdown Notfications
             received related to session(s) (past and present)
associated
             with
                  "The storage type for this LDP Entity." entry."
         ::= { mplsLdpEntityStatsEntry 12 mplsLdpEntityConfFrLabelRangeEntry 3 }

     mplsLdpShutdownNotifSent

     mplsLdpConfFrRowStatus OBJECT-TYPE
         SYNTAX      Counter32      RowStatus
         MAX-ACCESS  read-only  read-create
         STATUS      current
         DESCRIPTION
             "This
             "An object counts that allows entries in this table to
             be created and deleted using the number
             RowStatus convention.

             If the value of Shutdown Notfications
             sent the object
             'mplsLdpEntityOptionalParameters' contains the
             value of 'frameRelaySessionParameters(3)' then
             there must be at least one corresponding entry
             in this table.

             NOTE:  This RowStatus object should
             have the same value of the 'mplsLdpEntityRowStatus'
             related to session(s) (past and present) associated
             with this LDP Entity." entry."
         ::= { mplsLdpEntityStatsEntry 13 mplsLdpEntityConfFrLabelRangeEntry 4 }

     --
     -- The MPLS LDP Peer Entity Statistics Table
     --

     mplsLdpPeerObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 3 }

     mplsLdpPeerTable

     mplsLdpEntityStatsTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpPeerEntry MplsLdpEntityStatsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Information
             "This table is a read-only table which augments
             the mplsLdpEntityTable.  The purpose of this
             table is to keep statistical information about
             the LDP peers.  This information is
             gathered either by Entities on the Discovery messages and/or by
             Session Intialization Messages." LSR."
         ::= { mplsLdpPeerObjects 1 mplsLdpEntityObjects 6 }

     mplsLdpPeerEntry

     mplsLdpEntityStatsEntry OBJECT-TYPE
         SYNTAX      MplsLdpPeerEntry      MplsLdpEntityStatsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Information
             "A row in this table contains statistical information
             about an LDP Entity.  Some counters contained in a single Peer."
         INDEX
             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       { mplsLdpPeerLdpId   mplsLdpEntityEntry  }
         ::= { mplsLdpPeerTable mplsLdpEntityStatsTable 1 }

     MplsLdpPeerEntry

     MplsLdpEntityStatsEntry ::= SEQUENCE {
         mplsLdpPeerLdpId                      MplsLdpIdentifier,
         mplsLdpPeerLabelDistributionMethod    INTEGER,
         mplsLdpPeerLoopDetectionForPV         INTEGER,
         mplsLdpPeerPathVectorLimit            Integer32
         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
     }

     mplsLdpPeerLdpId

     mplsLdpAttemptedSessions OBJECT-TYPE
         SYNTAX      MplsLdpIdentifier      Counter32
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "The LDP identifier
             "A count of the total attempted sessions for
             this LDP Peer." Entity."
         ::= { mplsLdpPeerEntry mplsLdpEntityStatsEntry 1 }

     mplsLdpPeerLabelDistributionMethod

     mplsLdpSessionRejectedNoHelloErrors OBJECT-TYPE
         SYNTAX      INTEGER {
                        downstreamOnDemand(1),
                        downstreamUnsolicited(2)
                     }      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "For any given LDP session, the method
             "A count of
             label distribution must be specified."
         REFERENCE
             "draft-ietf-mpls-arch-06.txt [20]." the Session Rejected/No Hello Error
             Notification Messages sent or received by
             this LDP Entity."
         ::= { mplsLdpPeerEntry mplsLdpEntityStatsEntry 2 }

     mplsLdpPeerLoopDetectionForPV

     mplsLdpSessionRejectedAdvertisementErrors OBJECT-TYPE
         SYNTAX      INTEGER {
                        disabled(0),
                        enabled(1)
                     }      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "An indication
             "A count of whether loop detection based on path
vectors is
             disabled the Session Rejected/Parameters
             Advertisement Mode Error Notification Messages sent
             or enabled for this Peer.

             If this object has a value of disabled(0),
             then loop detection is disabled.  Otherwise, if received by this object
has
             a value of enabled(1), then loop detection based on path
vectors
             is enabled." LDP Entity."
         ::= { mplsLdpPeerEntry mplsLdpEntityStatsEntry 3 }

     mplsLdpPeerPathVectorLimit

     mplsLdpSessionRejectedMaxPduErrors OBJECT-TYPE
         SYNTAX      Integer32 (0..255)      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "If the value
             "A count 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 Session Rejected/Parameters
             Max Pdu Length Error Notification Messages sent
             or received by this value should be 0 (zero)."
         ::= { mplsLdpPeerEntry 4 }

     --
     -- The MPLS LDP Sessions Table
     --

     mplsLdpSessionObjects OBJECT IDENTIFIER Entity."
         ::= { mplsLdpObjects mplsLdpEntityStatsEntry 4 }

     mplsLdpSessionTable

     mplsLdpSessionRejectedLabelRangeErrors OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpSessionEntry      Counter32
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "A table count of Sessions between the Session Rejected/Parameters
             Label Range Notification Notification Messages sent
             or received by this LDP Entities and
             LDP Peers.  Each row represents a single session." Entity."
         ::= { mplsLdpSessionObjects 1 mplsLdpEntityStatsEntry 5 }

     mplsLdpSessionEntry

     mplsLdpBadLdpIdentifierErrors OBJECT-TYPE
         SYNTAX      MplsLdpSessionEntry      Counter32
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "An entry in this table represents information on a
             single session between an
             "This object counts the number of Bad LDP Entity Identifier
             Fatal Errors detected by the session(s)
             (past and present) associated with this LDP Peer.
             The information contained in a row is read-only."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId
                     }
         ::= { mplsLdpSessionTable 1 }

     MplsLdpSessionEntry Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= SEQUENCE {
         mplsLdpSessionState                          INTEGER,
         mplsLdpSessionProtocolVersion                Integer32,
         mplsLdpSessionKeepAliveHoldTimeRemaining     TimeInterval,
         mplsLdpSessionMaxPduLength                   Integer32,
         mplsLdpSessionDiscontinuityTime              TimeStamp mplsLdpEntityStatsEntry 6 }

     mplsLdpSessionState

     mplsLdpBadPduLengthErrors OBJECT-TYPE
         SYNTAX      INTEGER {
                        nonexistent(1),
                        initialized(2),
                        openrec(3),
                        opensent(4),
                        operational(5)
                     }      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The current state of the session, all of
             "This object counts the
             states 1 - 5 are based on number of Bad Pdu Length
             Fatal Errors detected by the state machine for
             session negotiation behavior." session(s)
             (past and present) associated with this LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpSessionEntry 1 mplsLdpEntityStatsEntry 7 }

     mplsLdpSessionProtocolVersion

     mplsLdpBadMessageLengthErrors OBJECT-TYPE
         SYNTAX      Integer32(1..65535)      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
                  "The version
             "This object counts the number of Bad Message
             Length Fatal Errors detected by the LDP Protocol which session(s)
             (past and present) associated with this session is using." LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpSessionEntry 2 mplsLdpEntityStatsEntry 8 }

     mplsLdpSessionKeepAliveHoldTimeRemaining

     mplsLdpBadTlvLengthErrors OBJECT-TYPE
         SYNTAX      TimeInterval      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The keep alive hold time remaining for
             "This object counts the number of Bad TLV
             Length Fatal Errors detected by the session(s)
             (past and present) associated with this session." LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpSessionEntry 3 mplsLdpEntityStatsEntry 9 }

     mplsLdpSessionMaxPduLength

     mplsLdpMalformedTlvValueErrors OBJECT-TYPE
         SYNTAX      Integer32 (0..65535)      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The value
             "This object counts the number of maximum allowable length for LDP PDUs for
             this session.  This value may have been negotiated during Malformed TLV
             Value Fatal Errors detected by the Session Initialization." session(s)
             (past and present) associated with this
             LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpSessionEntry 4 mplsLdpEntityStatsEntry 10 }

     mplsLdpSessionDiscontinuityTime

     mplsLdpKeepAliveTimerExpiredErrors OBJECT-TYPE
         SYNTAX      TimeStamp      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The value of sysUpTime on
             "This object counts the most recent occasion at
             which any one or more number of this session's counters
             suffered a discontinuity.  The relevant counters are Session Keep Alive
             Timer Expired Errors detected by the specific instances session(s)
             (past and present) associated with this session
             of any LDP Entity."
         REFERENCE
            "LDP Specification, Section 3.5.1.2."
         ::= { mplsLdpEntityStatsEntry 11 }

     mplsLdpShutdownNotifReceived OBJECT-TYPE
         SYNTAX      Counter32 or Counter64
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object contained in the
             mplsLdpSessionStatsTable.  If no such discontinuities have
             occurred since counts the last re-initialization number of the local
             management subsystem, then 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 contains a zero
             value.

             Also, an NMS can distinguish when a session
             between a given Entity and Peer goes away and then is
             're-established'.  This value would change and
             thus indicate to counts the NMS that number of Shutdown Notfications
             sent related to session(s) (past and present) associated
             with this is a different session." LDP Entity."
         ::= { mplsLdpSessionEntry 5 mplsLdpEntityStatsEntry 13 }

     --
     -- The MPLS LDP ATM Session Information Entity Peer Table
     --

     mplsLdpAtmSessionTable

     mplsLdpEntityPeerObjects OBJECT IDENTIFIER ::=
                                              { mplsLdpObjects 3 }

     mplsLdpEntityPeerTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpAtmSessionEntry MplsLdpEntityPeerEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table which relates Sessions in the
'mplsLdpSessionTable'
             and their label range intersections.  There could
             be one or more label range intersections between an
             LDP Entity and
             "Information about LDP Peer using ATM as peers known by Entities in
             the underlying media.

             Each row represents a single label range intersection.

             NOTE: mplsLdpEntityTable.  The information in this table cannot use
             is based on information from the 'AUGMENTS'
             clause because there Entity-Peer interaction
             but is not necessarily a one-to-one
             mapping between this table and appropriate for the mplsLdpSessionTable."
         ::= { mplsLdpSessionObjects 2 mplsLdpEntityPeerObjects 1 }

     mplsLdpAtmSessionEntry

     mplsLdpEntityPeerEntry OBJECT-TYPE
         SYNTAX      MplsLdpAtmSessionEntry      MplsLdpEntityPeerEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table represents information on
             "Information about a single label range intersection between an LDP Entity
             and LDP Peer.

             The information contained in a row Peer which is read-only." related
             to an entity."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                       mplsLdpSessionAtmLabelRangeLowerBoundVpi,
                       mplsLdpSessionAtmLabelRangeLowerBoundVci
                       mplsLdpPeerLdpId }
         ::= { mplsLdpAtmSessionTable mplsLdpEntityPeerTable 1 }

     MplsLdpAtmSessionEntry

     MplsLdpEntityPeerEntry ::= SEQUENCE {
         mplsLdpSessionAtmLabelRangeLowerBoundVpi     AtmVpIdentifier,
         mplsLdpSessionAtmLabelRangeLowerBoundVci     AtmVcIdentifier,
         mplsLdpSessionAtmLabelRangeUpperBoundVpi     AtmVpIdentifier,
         mplsLdpSessionAtmLabelRangeUpperBoundVci     AtmVcIdentifier
         mplsLdpPeerLdpId                      MplsLdpIdentifier,
         mplsLdpPeerLabelDistributionMethod    INTEGER,
         mplsLdpPeerLoopDetectionForPV         INTEGER,
         mplsLdpPeerPathVectorLimit            Integer32
     }

     mplsLdpSessionAtmLabelRangeLowerBoundVpi

     mplsLdpPeerLdpId OBJECT-TYPE
         SYNTAX AtmVpIdentifier      MplsLdpIdentifier
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "The minimum VPI number for LDP identifier of this range." LDP Peer."
         ::= { mplsLdpAtmSessionEntry mplsLdpEntityPeerEntry 1 }

     mplsLdpSessionAtmLabelRangeLowerBoundVci

     mplsLdpPeerLabelDistributionMethod OBJECT-TYPE
         SYNTAX AtmVcIdentifier      INTEGER {
                        downstreamOnDemand(1),
                        downstreamUnsolicited(2)
                     }
         MAX-ACCESS not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "The minimum VCI number for this range."
             "For any given LDP session, the method of
             label distribution must be specified."
         REFERENCE
             "draft-ietf-mpls-arch-06.txt [20]."
         ::= { mplsLdpAtmSessionEntry mplsLdpEntityPeerEntry 2 }

     mplsLdpSessionAtmLabelRangeUpperBoundVpi

     mplsLdpPeerLoopDetectionForPV OBJECT-TYPE
         SYNTAX AtmVpIdentifier      INTEGER {
                        disabled(0),
                        enabled(1)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The maximum VPI number
             "An indication of whether loop detection based
             on path vectors is disabled or enabled for this range." 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."
         ::= { mplsLdpAtmSessionEntry mplsLdpEntityPeerEntry 3 }

     mplsLdpSessionAtmLabelRangeUpperBoundVci

     mplsLdpPeerPathVectorLimit OBJECT-TYPE
         SYNTAX AtmVcIdentifier      Integer32 (0..255)
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The maximum VCI number
             "If the value of 'mplsLdpPeerLoopDetectionForPV' for
             this range." 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)."
         ::= { mplsLdpAtmSessionEntry mplsLdpEntityPeerEntry 4 }

     --
     -- The MPLS LDP Frame Relay Session Information Hello Adjacency Table
     --

     mplsLdpFrameRelaySessionTable

     mplsLdpHelloAdjacencyObjects OBJECT IDENTIFIER ::=
                                   { mplsLdpEntityPeerObjects 2 }

     mplsLdpHelloAdjacencyTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpFrameRelaySessionEntry MplsLdpHelloAdjacencyEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table of Frame Relay label range intersections
             between the LDP Entities and LDP Peers.
             Each row represents a single label range intersection.

             NOTE:  this table cannot use the 'AUGMENTS'
             clause because there is not necessarily a one-to-one
             mapping between this table and the mplsLdpSessionTable." Hello Adjacencies for Sessions."
         ::= { mplsLdpSessionObjects 3 mplsLdpHelloAdjacencyObjects 1 }

     mplsLdpFrameRelaySessionEntry

     mplsLdpHelloAdjacencyEntry OBJECT-TYPE
         SYNTAX      MplsLdpFrameRelaySessionEntry      MplsLdpHelloAdjacencyEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An entry in this table
             "Each row represents information on a single label range intersection between an LDP Entity and Hello Adjacency.
             An LDP Peer.

             The information contained in a row is read-only." Session can have one or more Hello adjacencies."
              INDEX       { mplsLdpEntityLdpId,
                            mplsLdpEntityIndex,
                            mplsLdpPeerLdpId,
                       mplsLdpFrSessionMinDlci
                            mplsLdpHelloAdjacencyIndex }
         ::= { mplsLdpFrameRelaySessionTable mplsLdpHelloAdjacencyTable 1 }
     MplsLdpFrameRelaySessionEntry

     MplsLdpHelloAdjacencyEntry ::= SEQUENCE {
         mplsLdpFrSessionMinDlci    Integer32,
         mplsLdpFrSessionMaxDlci    Integer32,
         mplsLdpFrSessionLen
         mplsLdpHelloAdjacencyIndex                  Unsigned32,
         mplsLdpHelloAdjacencyHoldTimeRemaining      TimeInterval,
         mplsLdpHelloAdjacencyType                   INTEGER
     }

     mplsLdpFrSessionMinDlci

     mplsLdpHelloAdjacencyIndex OBJECT-TYPE
         SYNTAX      Integer32(0..4194303)      Unsigned32 (1..4294967295)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "The lower bound of DLCIs which are supported."
             "An identifier for this specific adjacency."
         ::= { mplsLdpFrameRelaySessionEntry mplsLdpHelloAdjacencyEntry 1 }

     mplsLdpFrSessionMaxDlci

     mplsLdpHelloAdjacencyHoldTimeRemaining OBJECT-TYPE
         SYNTAX      Integer32 (0..4194303)      TimeInterval
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The upper bound of DLCIs time remaining for this Hello Adjacency.
             This interval will change when the 'next'
             Hello message which are supported." corresponds to this
             Hello Adjacency is received."
         ::= { mplsLdpFrameRelaySessionEntry mplsLdpHelloAdjacencyEntry 2 }

     mplsLdpFrSessionLen

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

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

     mplsLdpSessionStatsTable

     mplsLdpSessionObjects OBJECT IDENTIFIER ::=
                                 { mplsLdpEntityPeerObjects 3 }

     mplsLdpSessionUpDownTrapEnable OBJECT-TYPE
         SYNTAX      INTEGER {
                                enabled(1),
                                disabled(2)
                             }
         MAX-ACCESS  read-write
         STATUS      current
         DESCRIPTION
             "Indicates whether the traps, 'mplsLdpSessionUp' and
             'mplsLdpSessionDown' will be generated or not.

             If the value of this object is 'enabled(1)'
             then the traps will generated.  If the value
             of this object is 'disabled(2)' then the
             traps will not be generated.  The DEFVAL
             is set to 'disabled(1)'."
         DEFVAL { disabled }
         ::= { mplsLdpSessionObjects 1 }

     mplsLdpSessionTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpSessionStatsEntry MplsLdpSessionEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table of Sessions between the LDP Entities and
             LDP Peers." Peers.  Each row represents a single session."
         ::= { mplsLdpSessionObjects 4 2 }
     mplsLdpSessionStatsEntry

     mplsLdpSessionEntry OBJECT-TYPE
         SYNTAX      MplsLdpSessionStatsEntry      MplsLdpSessionEntry
         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 Peer.
             The information contained in a row is read-only."
         INDEX       { mplsLdpSessionEntry mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId
                     }
         ::= { mplsLdpSessionStatsTable mplsLdpSessionTable 1 }

     MplsLdpSessionStatsEntry

     MplsLdpSessionEntry ::= SEQUENCE {
         mplsLdpSessionStatsUnknownMessageTypeErrors Counter32,
         mplsLdpSessionStatsUnknownTlvErrors         Counter32
         mplsLdpSessionState                          INTEGER,
         mplsLdpSessionProtocolVersion                Integer32,
         mplsLdpSessionKeepAliveHoldTimeRemaining     TimeInterval,
         mplsLdpSessionMaxPduLength                   Unsigned32,
         mplsLdpSessionDiscontinuityTime              TimeStamp
     }

     mplsLdpSessionStatsUnknownMessageTypeErrors

     mplsLdpSessionState OBJECT-TYPE
         SYNTAX      Counter32      INTEGER {
                        nonexistent(1),
                        initialized(2),
                        openrec(3),
                        opensent(4),
                        operational(5)
                     }
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "This object counts the number
             "The current state of Unknown Message Type
             Errors detected during this session.

             Discontinuities in the value of this counter can occur
             at re-initialization session, all of the management system, and at
             other times as indicated by
             states 1 - 5 are based on the value of
             mplsLdpSeeionDiscontinuityTime." state machine for
             session negotiation behavior."
         ::= { mplsLdpSessionStatsEntry mplsLdpSessionEntry 1 }

     mplsLdpSessionStatsUnknownTlvErrors

     mplsLdpSessionProtocolVersion OBJECT-TYPE
              SYNTAX      Counter32      Integer32(1..65535)
              MAX-ACCESS  read-only
              STATUS      current
              DESCRIPTION
             "This object counts the number
                  "The version of Unknown TLV Errors
             detected during this session.

             Discontinuities in the value of LDP Protocol which
                  this counter can occur
             at re-initialization of the management system, and at
             other times as indicated by the value of
             mplsLdpSeeionDiscontinuityTime." session is using."
              ::= { mplsLdpSessionStatsEntry mplsLdpSessionEntry 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

     mplsLdpSessionKeepAliveHoldTimeRemaining OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpSessionPeerAddressEntry      TimeInterval
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "This table 'extends' the mplsLdpSessionTable.
             This table is used to store Label Address Information
             from Label Address Messages received by
             "The keep alive hold time remaining for this LSR from
             Peers.  This table is session."
         ::= { mplsLdpSessionEntry 3 }

     mplsLdpSessionMaxPduLength OBJECT-TYPE
         SYNTAX      Unsigned32 (1..65535)
         MAX-ACCESS  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,
         STATUS      current
         DESCRIPTION
             "The value of maximum allowable length for LDP PDUs for
             this table 'extends',
             rather than 'AUGMENTS' session.  This value may have been negotiated during
             the mplsLdpSessionTable's
             information." Session Initialization."
         ::= { mplsLdpSessionObjects 5 mplsLdpSessionEntry 4 }

     mplsLdpSessionPeerAddressEntry

     mplsLdpSessionDiscontinuityTime OBJECT-TYPE
         SYNTAX      MplsLdpSessionPeerAddressEntry      TimeStamp
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "An entry in
             "The value of sysUpTime on the most recent occasion at
             which any one or more of this session's counters
             suffered a discontinuity.  The relevant counters are
             the specific instances associated with this session
             of any Counter32 or Counter64 object contained in the
             mplsLdpSessionStatsTable.  If no such discontinuities have
             occurred since the last re-initialization of the local
             management subsystem, then this object contains a zero
             value.

             Also, an NMS can distinguish when a session
             between a given Entity and Peer goes away and then is
             're-established'.  This value would change and
             thus indicate to the NMS that this is a
             different session."
         ::= { mplsLdpSessionEntry 5 }

     --
     -- MPLS LDP ATM Session Information
     --

     mplsLdpAtmSessionTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpAtmSessionEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table which relates Sessions in the
             'mplsLdpSessionTable' and their label
             range intersections.  There could be one
             or more label range intersections between an
             LDP Entity and LDP Peer using ATM as the underlying
             media. Each row represents a single label range
             intersection.

             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 4 }

     mplsLdpAtmSessionEntry OBJECT-TYPE
         SYNTAX      MplsLdpAtmSessionEntry
         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 label range intersection between an Address Message from the LDP peer. Entity
             and LDP Peer.

             The information contained in a row is read-only."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                       mplsLdpSessionPeerAddressIndex
                       mplsLdpSessionAtmLabelRangeLowerBoundVpi,
                       mplsLdpSessionAtmLabelRangeLowerBoundVci

                     }
         ::= { mplsLdpSessionPeerAddressTable mplsLdpAtmSessionTable 1 }

     MplsLdpSessionPeerAddressEntry

     MplsLdpAtmSessionEntry ::= SEQUENCE {
         mplsLdpSessionPeerAddressIndex           Unsigned32,
         mplsLdpSessionPeerNextHopAddressType     AddressFamilyNumbers,
         mplsLdpSessionPeerNextHopAddress         MplsLdpGenAddr
         mplsLdpSessionAtmLabelRangeLowerBoundVpi     AtmVpIdentifier,
         mplsLdpSessionAtmLabelRangeLowerBoundVci     AtmVcIdentifier,
         mplsLdpSessionAtmLabelRangeUpperBoundVpi     AtmVpIdentifier,
         mplsLdpSessionAtmLabelRangeUpperBoundVci     AtmVcIdentifier
     }

     mplsLdpSessionPeerAddressIndex

     mplsLdpSessionAtmLabelRangeLowerBoundVpi OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295) AtmVpIdentifier
         MAX-ACCESS not-accessible
         STATUS current
         DESCRIPTION
             "An index which uniquely identifies
             "The minimum VPI number for this entry within
             a given session." range."
         ::= { mplsLdpSessionPeerAddressEntry mplsLdpAtmSessionEntry 1 }
     mplsLdpSessionPeerNextHopAddressType

     mplsLdpSessionAtmLabelRangeLowerBoundVci OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers AtmVcIdentifier
         MAX-ACCESS  read-only not-accessible
         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 minimum VCI number for this object indicates
             how to interpret the value of
             mplsLdpSessionPeerNextHopAddress." range."
         ::= { mplsLdpSessionPeerAddressEntry mplsLdpAtmSessionEntry 2 }

     mplsLdpSessionPeerNextHopAddress
     mplsLdpSessionAtmLabelRangeUpperBoundVpi OBJECT-TYPE
         SYNTAX      MplsLdpGenAddr AtmVpIdentifier
         MAX-ACCESS read-only
         STATUS current
         DESCRIPTION
             "The value of the next hop address."
         REFERENCE
             "LDP Specification [18] defines only IPv4 maximum VPI number for LDP Protocol
             Version 1, see section 3.4.3." this range."
         ::= { mplsLdpSessionPeerAddressEntry mplsLdpAtmSessionEntry 3 }

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

     --
     -- The MPLS LDP Hello Adjacency Table Frame Relay Session Information
     --

     mplsLdpHelloAdjacencyObjects OBJECT IDENTIFIER ::= { mplsLdpObjects
5 }

     mplsLdpHelloAdjacencyTable

     mplsLdpFrameRelaySessionTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpHelloAdjacencyEntry MplsLdpFrameRelaySessionEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "A table of Hello Adjacencies for Sessions." Frame Relay label range intersections
             between the LDP Entities and LDP Peers.
             Each row represents a single label range intersection.

             NOTE:  this table cannot use the 'AUGMENTS'
             clause because there is not necessarily a one-to-one
             mapping between this table and the mplsLdpSessionTable."
         ::= { mplsLdpHelloAdjacencyObjects 1 mplsLdpSessionObjects 5 }

     mplsLdpHelloAdjacencyEntry

     mplsLdpFrameRelaySessionEntry OBJECT-TYPE
         SYNTAX      MplsLdpHelloAdjacencyEntry      MplsLdpFrameRelaySessionEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Each row
             "An entry in this table represents information on a
             single label range intersection between an
             LDP Hello Adjacency.
             An Entity and LDP Session can have one or more Hello adjacencies." Peer.

             The information contained in a row is read-only."
         INDEX       { mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                            mplsLdpHelloAdjacencyIndex
                       mplsLdpFrSessionMinDlci
                     }
         ::= { mplsLdpHelloAdjacencyTable mplsLdpFrameRelaySessionTable 1 }
     MplsLdpHelloAdjacencyEntry

     MplsLdpFrameRelaySessionEntry ::= SEQUENCE {
         mplsLdpHelloAdjacencyIndex                  Unsigned32,
         mplsLdpHelloAdjacencyHoldTimeRemaining      TimeInterval,
         mplsLdpHelloAdjacencyType
         mplsLdpFrSessionMinDlci    Integer32,
         mplsLdpFrSessionMaxDlci    Integer32,
         mplsLdpFrSessionLen        INTEGER
     }

     mplsLdpHelloAdjacencyIndex

     mplsLdpFrSessionMinDlci OBJECT-TYPE
         SYNTAX      Unsigned32 (1..4294967295)      Integer32(0..4194303)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An identifier for this specific adjacency."
         ::= { mplsLdpHelloAdjacencyEntry 1 }

     mplsLdpHelloAdjacencyHoldTimeRemaining
             "The lower bound of DLCIs which are supported."
         ::= { mplsLdpFrameRelaySessionEntry 1 }

     mplsLdpFrSessionMaxDlci OBJECT-TYPE
         SYNTAX      TimeInterval      Integer32 (0..4194303)
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The time remaining for this Hello Adjacency.
             This interval will change when the 'next'
             Hello message upper bound of DLCIs which corresponds to this
             Hello Adjacency is received." are supported."
         ::= { mplsLdpHelloAdjacencyEntry mplsLdpFrameRelaySessionEntry 2 }

     mplsLdpHelloAdjacencyType

     mplsLdpFrSessionLen OBJECT-TYPE
         SYNTAX      INTEGER {
                        link(1),
                        targeted(2)
                         tenDlciBits(0),
                         twentyThreeDlciBits(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)." specifies the DLCI bits."
         ::= { mplsLdpHelloAdjacencyEntry mplsLdpFrameRelaySessionEntry 3 }

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

     mplsLdpLibObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 6 }

     mplsLdpLibTable

     mplsLdpSessionStatsTable OBJECT-TYPE
         SYNTAX      SEQUENCE OF MplsLdpLibEntry MplsLdpSessionStatsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table represents LIB (Label Information Base)
             Information.  The
             "A table is read-only." of statistics for Sessions between
             LDP Entities and LDP Peers."
         ::= { mplsLdpLibObjects 1 mplsLdpSessionObjects 6 }

     mplsLdpLibEntry
     mplsLdpSessionStatsEntry OBJECT-TYPE
         SYNTAX      MplsLdpLibEntry      MplsLdpSessionStatsEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Each row
             "An entry in this table represents statistical
             information on a single session between an LDP LIB entry."
         INDEX
             Entity and LDP Peer."
         AUGMENTS       { mplsLdpLibLspId mplsLdpSessionEntry }
         ::= { mplsLdpLibTable mplsLdpSessionStatsTable 1 }

     MplsLdpLibEntry

     MplsLdpSessionStatsEntry ::= SEQUENCE {
         mplsLdpLibLspId                             Unsigned32,
         mplsLdpLibLabelInIfIndex                    InterfaceIndex,
         mplsLdpLibLabelOutIfIndex                   InterfaceIndex,
         mplsLdpLibLabelType                         MplsLdpLabelTypes,
         mplsLdpLibInLabel                           MplsLabel,
         mplsLdpLibOutLabel                          MplsLabel
         mplsLdpSessionStatsUnknownMessageTypeErrors Counter32,
         mplsLdpSessionStatsUnknownTlvErrors         Counter32
     }

     mplsLdpLibLspId

     mplsLdpSessionStatsUnknownMessageTypeErrors OBJECT-TYPE
         SYNTAX       Unsigned32 (1..4294967295)      Counter32
         MAX-ACCESS   not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "This object counts the number is used to uniquely identify this row, since of Unknown Message Type
             Errors detected during 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 session.

             Discontinuities 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 value of the 'mplsLdpInLabel'."
         ::= { mplsLdpLibEntry 2 }

     mplsLdpLibLabelOutIfIndex OBJECT-TYPE
         SYNTAX       InterfaceIndex
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "The ifIndex this counter can occur
             at re-initialization of the 'mplsLdpOutLabel'."
         ::= { mplsLdpLibEntry 3 }
     mplsLdpLibLabelType  OBJECT-TYPE
         SYNTAX        MplsLdpLabelTypes
         MAX-ACCESS    read-only
         STATUS        current
         DESCRIPTION
             "The Layer 2 Label Type for 'mplsLdpInLabel' management system, and
             'mplsLdpOutLabel'." at
             other times as indicated by the value of
             mplsLdpSeeionDiscontinuityTime."
         ::= { mplsLdpLibEntry 4 mplsLdpSessionStatsEntry 1 }

     mplsLdpLibInLabel

     mplsLdpSessionStatsUnknownTlvErrors OBJECT-TYPE
         SYNTAX        MplsLabel      Counter32
         MAX-ACCESS  read-only
         STATUS      current
         DESCRIPTION
             "The incoming label
             "This object counts the number of Unknown TLV Errors
             detected during this LSP."
         ::= { mplsLdpLibEntry 5 }

     mplsLdpLibOutLabel OBJECT-TYPE
         SYNTAX         MplsLabel
         MAX-ACCESS     read-only
         STATUS         current
         DESCRIPTION
            "The outgoing label session.

             Discontinuities in the value of this LSP." counter can occur
             at re-initialization of the management system, and at
             other times as indicated by the value of
             mplsLdpSeeionDiscontinuityTime."
         ::= { mplsLdpLibEntry 6 mplsLdpSessionStatsEntry 2 }

     --
     -- Mpls Ldp FEC Table Address Message/Address Withdraw Message Information
     --

     mplsLdpFecTable
     -- 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 MplsLdpFecEntry MplsLdpSessionPeerAddressEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "This table represents 'extends' the FEC
             (Forwarding Equivalence Class) mplsLdpSessionTable.
             This table is used to store Label Address Information associated with an LSP.
             The
             from Label Address Messages received by this LSR from
             Peers.  This table is read-only." 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."
         ::= { mplsLdpLibObjects 2 mplsLdpSessionObjects 7 }

     mplsLdpFecEntry

     mplsLdpSessionPeerAddressEntry OBJECT-TYPE
         SYNTAX      MplsLdpFecEntry      MplsLdpSessionPeerAddressEntry
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Each row
             "An entry in this table represents information on
             session's for a single FEC Element."
         INDEX next hop address which was
             advertised in an Address Message from the LDP peer.
             The information contained in a row is read-only."
         INDEX       { mplsLdpFecType,
                       mplsLdpFecAddressFamily,
                       mplsLdpFecAddressLength,
                       mplsLdpFecAddress mplsLdpEntityLdpId,
                       mplsLdpEntityIndex,
                       mplsLdpPeerLdpId,
                       mplsLdpSessionPeerAddressIndex
                     }
         ::= { mplsLdpFecTable mplsLdpSessionPeerAddressTable 1 }

     MplsLdpFecEntry

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

     mplsLdpFecType

     mplsLdpSessionPeerAddressIndex OBJECT-TYPE
         SYNTAX      INTEGER      Unsigned32 (1..4294967295)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "An index which uniquely identifies this entry within
             a given session."
         ::= {
                        prefix(1),
                        hostAddress(2) mplsLdpSessionPeerAddressEntry 1 }

     mplsLdpSessionPeerNextHopAddressType OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "The internetwork layer address type of the FEC.  If the value of this object
             is 'prefix(1)' then Next Hop
             Address as specified in the FEC type described by Label Address Message
             associated with this
             row is for address prefixes.

             If the Session. The value of this
             object is 'hostAddress(2)' then indicates how to interpret the FEC type described by this row is a host address." value of
             mplsLdpSessionPeerNextHopAddress."
         ::= { mplsLdpFecEntry 1 mplsLdpSessionPeerAddressEntry 2 }

     mplsLdpFecAddressFamily

     mplsLdpSessionPeerNextHopAddress OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers      MplsLdpGenAddr
         MAX-ACCESS  not-accessible  read-only
         STATUS      current
         DESCRIPTION
             "The value of this object is from the Address Family
             Numbers." next hop address."
         REFERENCE
             "LDP Specification [18] defines only IPv4 for LDP Protocol
             Version 1, see section 3.4.3."
         ::= { mplsLdpFecEntry 2 mplsLdpSessionPeerAddressEntry 3 }

     mplsLdpFecAddressLength

     --
     -- MPLS LDP LIB Table
     --

     mplsLdpLibObjects OBJECT IDENTIFIER ::= { mplsLdpObjects 6 }

     mplsLdpLibLspUpDownTrapEnable OBJECT-TYPE
        SYNTAX      Integer32(0..255)      INTEGER { enabled(1), disabled(2) }
        MAX-ACCESS  not-accessible  read-write
        STATUS      current
        DESCRIPTION
             "If the value of 'mplsLdpFecType' is 'prefix(1)'
             then
           "Indicates whether traps related to
           an LSP's operation status should be sent.

           If the value of this object is 'enabled(1)'
           then the length in
             bits of 'mplsLdpLibLspUp' and the address prefix represented by
             'mplsLdpFecAddress', or if
           'mplsLdpLibLspDown' traps will be sent.

           If the length is zero then
             this is a special value which indicates that the
             prefix matches all addresses.  In of this case the
             prefix object is also zero (i.e. 'mplsLdpFecAddress' 'disabled(2)'
           then those traps will
             have the value of zero.)" not be sent."
         DEFVAL { disabled }
         ::= { mplsLdpFecEntry 3 mplsLdpLibObjects 1 }
     mplsLdpFecAddress

     mplsLdpLibTable OBJECT-TYPE
         SYNTAX      MplsLdpGenAddr      SEQUENCE OF MplsLdpLibEntry
         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
             "This table represents LIB (Label Information Base)
             Information.  The table is zero, then this object should also be
             zero." read-only."
         ::= { mplsLdpFecEntry 4 mplsLdpLibObjects 2 }

     mplsLdpFecLspId

     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,
         mplsLdpLibInLabelType                       MplsLdpLabelTypes,
         mplsLdpLibInLabel                           MplsLabel,
         mplsLdpLibOutLabelType                      MplsLdpLabelTypes,
         mplsLdpLibOutLabel                          MplsLabel,
         mplsLdpLibOperationStatus                   INTEGER,
         mplsLdpLibLspLastChange                     TimeStamp

     }

     mplsLdpLibLspId  OBJECT-TYPE
         SYNTAX       Unsigned32 (1..4294967295)
         MAX-ACCESS   read-only   not-accessible
         STATUS       current
         DESCRIPTION
             "This number represents the LSP which is related used to uniquely identify this FEC.  The value of row,
             since this object should correspond row is associated with a specific LSP,
             it may also be used to describe a unique number
             for an entry LSP.  This number is used in the MplsLdpLibTable, as denoted by
             the 'mplsLdpLibLspId' object.  In other words,
             mplsLdpFecTable to identify which FECs or FEC is
             associated with this
             object and the 'mplsLdpLibLspId' should have the same
             value."
         ::= { mplsLdpFecEntry 5 }

     ---
     --- Notifications
     ---

     mplsLdpNotificationPrefix   OBJECT IDENTIFIER LIB entry."
         ::= { mplsLdpNotifications 0 }

     mplsLdpFailedInitSessionThresholdExceeded NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpEntityFailedInitSessionThreshold mplsLdpLibEntry 1 }

     mplsLdpLibLabelInIfIndex OBJECT-TYPE
         SYNTAX       InterfaceIndex
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "This notification is generated whenever the value
             "The ifIndex of mplsLdpEntityFailedInitSessionThreshold is
             exceeded." the 'mplsLdpInLabel'."
         ::= { mplsLdpNotificationPrefix 1 }

     mplsLdpPathVectorLimitMismatch NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpEntityPathVectorLimit,
                        mplsLdpPeerPathVectorLimit mplsLdpLibEntry 2 }
     mplsLdpLibLabelOutIfIndex OBJECT-TYPE
         SYNTAX       InterfaceIndex
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "This notification is generated when the value
             of mplsLdpSessionPathVectorLimit does NOT match
             the value
             "The ifIndex of the mplsLdpPeerPathVectorLimit for
             the corresponding mplsLdpPeerEntry."
          REFERENCE
             "LDP Specification, Section 3.5.3." 'mplsLdpOutLabel'."
         ::= { mplsLdpNotificationPrefix 2 mplsLdpLibEntry 3 }

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

--********************************************************************

     mplsLdpGroups
         OBJECT IDENTIFIER

     mplsLdpLibInLabelType  OBJECT-TYPE
         SYNTAX        MplsLdpLabelTypes
         MAX-ACCESS    read-only
         STATUS        current
         DESCRIPTION
             "The Layer 2 Label Type for 'mplsLdpInLabel'."
         ::= { mplsLdpConformance 1 mplsLdpLibEntry 4 }

     mplsLdpCompliances
         OBJECT IDENTIFIER

     mplsLdpLibInLabel OBJECT-TYPE
         SYNTAX        MplsLabel
         MAX-ACCESS    read-only
         STATUS        current
         DESCRIPTION
             "The incoming label of this LSP."
         ::= { mplsLdpConformance 2 mplsLdpLibEntry 5 }

     --
     -- Compliance Statements
     --

     mplsLdpModuleCompliance MODULE-COMPLIANCE

     mplsLdpLibOutLabelType  OBJECT-TYPE
         SYNTAX        MplsLdpLabelTypes
         MAX-ACCESS    read-only
         STATUS        current
         DESCRIPTION
             "The basic implentation requirements Layer 2 Label Type for agents that
support
             the MPLS LDP MIB."
         MODULE -- this module
             MANDATORY-GROUPS 'mplsLdpOutLabel'."
         ::= { mplsLdpGeneralGroup,
                                   mplsLdpNotificationsGroup mplsLdpLibEntry 6 }
         GROUP mplsLdpAtmGroup

     mplsLdpLibOutLabel OBJECT-TYPE
         SYNTAX         MplsLabel
         MAX-ACCESS     read-only
         STATUS         current
         DESCRIPTION
             "This group must
            "The outgoing label of this LSP."
         ::= { mplsLdpLibEntry 7 }

     mplsLdpLibOperationStatus  OBJECT-TYPE
         SYNTAX         INTEGER {
                           unknown(1),     -- cannot be supported if ATM determined
                           up(2),          -- LSP is used in the
             MPLS LDP implementation."

         GROUP mplsLdpFrameRelayGroup up
                           down(3)         -- LSP is down
                        }
         MAX-ACCESS     read-only
         STATUS         current
         DESCRIPTION
             "This group must
            "The operation status of this LSP.
             unknown(1),     -- cannot be supported if Frame Relay determined
             up(2),          -- LSP is used in the
             MPLS LDP implementation." up
             down(3)         -- LSP is down."
         ::= { mplsLdpCompliances 1 mplsLdpLibEntry 8 }

     -- units

     mplsLdpLibLspLastChange   OBJECT-TYPE
         SYNTAX         TimeStamp
         MAX-ACCESS     read-only
         STATUS         current
         DESCRIPTION
            "The value of conformance

     mplsLdpGeneralGroup OBJECT-GROUP
         OBJECTS sysUpTime on the most recent occasion
            that the 'mplsLdpLibOperationStatus' changed.  If the
            status has not changed since the last re-initialization
            of the network management entity (i.e. SNMP agent), then
            this object should have the value of 0 (zero)."
         ::= {
         mplsLdpLsrId,
         mplsLdpLsrLabelRetentionMode,
         mplsLdpLsrLoopDetectionCapable,
         mplsLdpEntityIndexNext,
         mplsLdpEntityProtocolVersion,
         mplsLdpEntityAdminStatus,
         mplsLdpEntityOperStatus,
         mplsLdpEntityWellKnownDiscoveryPort,
         mplsLdpEntityMtu,
         mplsLdpEntityKeepAliveHoldTimer,
         mplsLdpEntityHelloHoldTimer,
         mplsLdpEntityFailedInitSessionThreshold,
         mplsLdpEntityControlMethod,
         mplsLdpEntityLabelDistributionMethod,
         mplsLdpEntityLoopDetectionForPV,
         mplsLdpEntityPathVectorLimit,
         mplsLdpEntityTargetedPeer,
         mplsLdpEntityTargetedPeerAddrType,
         mplsLdpEntityTargetedPeerAddr,
         mplsLdpEntityOptionalParameters,
         mplsLdpEntityRowStatus,
         mplsLdpAttemptedSessions,
         mplsLdpSessionRejectedNoHelloErrors,
         mplsLdpSessionRejectedAdvertisementErrors,
         mplsLdpSessionRejectedMaxPduErrors,
         mplsLdpSessionRejectedLabelRangeErrors,
         mplsLdpBadLdpIdentifierErrors,
         mplsLdpBadPduLengthErrors,
         mplsLdpBadMessageLengthErrors,
         mplsLdpBadTlvLengthErrors,
         mplsLdpMalformedTlvValueErrors,
         mplsLdpKeepAliveTimerExpiredErrors,
         mplsLdpShutdownNotifReceived,
         mplsLdpShutdownNotifSent,
         mplsLdpPeerLabelDistributionMethod,
         mplsLdpPeerLoopDetectionForPV,
         mplsLdpPeerPathVectorLimit,
         mplsLdpSessionState,
         mplsLdpSessionProtocolVersion,
         mplsLdpSessionKeepAliveHoldTimeRemaining,
         mplsLdpSessionMaxPduLength,
         mplsLdpSessionDiscontinuityTime,
         mplsLdpSessionStatsUnknownMessageTypeErrors,
         mplsLdpSessionStatsUnknownTlvErrors,
         mplsLdpSessionPeerNextHopAddressType,
         mplsLdpSessionPeerNextHopAddress,
         mplsLdpHelloAdjacencyHoldTimeRemaining,
         mplsLdpHelloAdjacencyType,
         mplsLdpLibLabelInIfIndex,
         mplsLdpLibLabelOutIfIndex,
         mplsLdpLibLabelType,
         mplsLdpLibInLabel,
         mplsLdpLibOutLabel, mplsLdpLibEntry 9 }

     --
     -- 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 3 }

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

     MplsLdpFecEntry ::= SEQUENCE {
         mplsLdpFecType              INTEGER,
         mplsLdpFecAddressFamily     AddressFamilyNumbers,
         mplsLdpFecAddressLength     Integer32,
         mplsLdpFecAddress           MplsLdpGenAddr,
         mplsLdpFecLspId             Unsigned32,
         mplsLdpFecSessionRowPointer RowPointer

     }

     mplsLdpFecType  OBJECT-TYPE
         SYNTAX      INTEGER {
                        prefix(1),
                        hostAddress(2)
                     }
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations."
             "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."
         ::= { mplsLdpGroups mplsLdpFecEntry 1 }

     mplsLdpAtmGroup OBJECT-GROUP
         OBJECTS

     mplsLdpFecAddressFamily  OBJECT-TYPE
         SYNTAX      AddressFamilyNumbers
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "The value of this object is from the Address Family
             Numbers."
         ::= {
         mplsLdpEntityAtmMergeCap,
         mplsLdpEntityAtmLabelRangeComponents,
         mplsLdpEntityAtmVcDirectionality,
         mplsLdpEntityAtmLsrConnectivity,
         mplsLdpEntityDefaultControlVpi,
         mplsLdpEntityDefaultControlVci,
         mplsLdpEntityUnlabTrafVpi,
         mplsLdpEntityUnlabTrafVci,
         mplsLdpEntityAtmRowStatus,
         mplsLdpEntityConfAtmLabelRangeMaximumVpi,
         mplsLdpEntityConfAtmLabelRangeMaximumVci,
         mplsLdpEntityConfAtmLabelRangeRowStatus,
         mplsLdpSessionAtmLabelRangeUpperBoundVpi,
         mplsLdpSessionAtmLabelRangeUpperBoundVci mplsLdpFecEntry 2 }

     mplsLdpFecAddressLength  OBJECT-TYPE
         SYNTAX      Integer32(0..255)
         MAX-ACCESS  not-accessible
         STATUS      current
         DESCRIPTION
             "Objects that apply
             "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   not-accessible
         STATUS       current
         DESCRIPTION
             "This number represents the LSP which is related to
             this FEC.  The value of this index should correspond
             to the 'mplsLdpLibLspId' in the LIB table."
         ::= { mplsLdpFecEntry 5 }

     mplsLdpFecSessionRowPointer OBJECT-TYPE
         SYNTAX       RowPointer
         MAX-ACCESS   read-only
         STATUS       current
         DESCRIPTION
             "A pointer to a row in the 'mplsLdpSessionTable' which
             is related to this FEC entry.

             The NULL OID zeroDotzero is interpreted to mean
             there is no known Session related to this FEC."
         ::= { mplsLdpFecEntry 6 }

     ---
     --- Notifications
     ---

     mplsLdpNotificationPrefix   OBJECT IDENTIFIER ::=
                                      { mplsLdpNotifications 0 }

     mplsLdpFailedInitSessionThresholdExceeded NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpEntityFailedInitSessionThreshold
                      }
          STATUS      current
          DESCRIPTION
             "This notification is generated when the value of
             the 'mplsLdpEntityPVLimitMismatchTrapEnable' object
             is 'enabled(1)' and  the value of the object,
             'mplsLdpEntityFailedInitSessionThreshold' has
             been exceeded."
          ::= { mplsLdpNotificationPrefix 1 }

     mplsLdpPathVectorLimitMismatch NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpEntityPathVectorLimit,
                        mplsLdpPeerPathVectorLimit
                      }
          STATUS      current
          DESCRIPTION
             "This notification is generated when the value
             of the value of the object,
             'mplsLdpEntityFailedInitSessionTrapEnable' is
             'enabled(1)' and the
             'mplsLdpEntityPathVectorLimit' does NOT match
             the value of the 'mplsLdpPeerPathVectorLimit' for
             a specific Entity."
          REFERENCE
             "LDP Specification, Section 3.5.3."
          ::= { mplsLdpNotificationPrefix 2 }

     mplsLdpSessionUp NOTIFICATION-TYPE
          OBJECTS     {
                         mplsLdpSessionState
                      }
          STATUS      current
          DESCRIPTION
             "Generation of this trap occurs when the
             'mplsLdpSessionUpDownTrapEnable' object is 'enabled(1)'
             and the value of mplsLdpSessionState changes from
             any state accept 'nonexistent(1)' to 'operational(5)'."
          ::= { mplsLdpNotificationPrefix 3 }

     mplsLdpSessionDown NOTIFICATION-TYPE
          OBJECTS     {
                         mplsLdpSessionState
                      }
          STATUS      current
          DESCRIPTION
             "Generation of this trap occurs when the
             'mplsLdpSessionUpDownTrapEnable' object is 'enabled(1)'
             and the value of mplsLdpSessionState changes from
             'operational(5)' to any other state."
          ::= { mplsLdpNotificationPrefix 4 }

     mplsLdpLibLspUp NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpLibOperationStatus
                      }
          STATUS      current
          DESCRIPTION
             "Generation of this trap occurs when the
             'mplsLdpLibLspUpDownTrapEnable' object is 'enabled(1)'
             and the LSP operation status changes from any state
             to 'up'."
          ::= { mplsLdpNotificationPrefix 5 }

     mplsLdpLibLspDown NOTIFICATION-TYPE
          OBJECTS     {
                        mplsLdpLibOperationStatus
                      }
          STATUS      current
          DESCRIPTION
             "Generation of this trap occurs when the
             'mplsLdpLibLspUpDownTrapEnable' object is 'enabled(1)'
             and the LSP operation status changes from any state
             to 'down'."
          ::= { mplsLdpNotificationPrefix 6 }

     --****************************************************************
     -- 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,
         mplsLdpEntityMaxPduLength,
         mplsLdpEntityKeepAliveHoldTimer,
         mplsLdpEntityHelloHoldTimer,
         mplsLdpEntityFailedInitSessionTrapEnable,
         mplsLdpEntityFailedInitSessionThreshold,
         mplsLdpEntityLabelDistributionMethod,
         mplsLdpEntityPVLimitMismatchTrapEnable,
         mplsLdpEntityPathVectorLimit,
         mplsLdpEntityHopCountLoopDetection,
         mplsLdpEntityHopCount,
         mplsLdpEntityTargetedPeer,
         mplsLdpEntityTargetedPeerAddrType,
         mplsLdpEntityTargetedPeerAddr,
         mplsLdpEntityOptionalParameters,
         mplsLdpEntityDiscontinuityTime,
         mplsLdpEntityStorageType,
         mplsLdpEntityRowStatus,
         mplsLdpAttemptedSessions,
         mplsLdpSessionRejectedNoHelloErrors,
         mplsLdpSessionRejectedAdvertisementErrors,
         mplsLdpSessionRejectedMaxPduErrors,
         mplsLdpSessionRejectedLabelRangeErrors,
         mplsLdpBadLdpIdentifierErrors,
         mplsLdpBadPduLengthErrors,
         mplsLdpBadMessageLengthErrors,
         mplsLdpBadTlvLengthErrors,
         mplsLdpMalformedTlvValueErrors,
         mplsLdpKeepAliveTimerExpiredErrors,
         mplsLdpShutdownNotifReceived,
         mplsLdpShutdownNotifSent,
         mplsLdpPeerLabelDistributionMethod,
         mplsLdpPeerLoopDetectionForPV,
         mplsLdpPeerPathVectorLimit,
         mplsLdpHelloAdjacencyHoldTimeRemaining,
         mplsLdpHelloAdjacencyType,
         mplsLdpSessionUpDownTrapEnable,
         mplsLdpSessionState,
         mplsLdpSessionProtocolVersion,
         mplsLdpSessionKeepAliveHoldTimeRemaining,
         mplsLdpSessionMaxPduLength,
         mplsLdpSessionDiscontinuityTime,
         mplsLdpSessionStatsUnknownMessageTypeErrors,
         mplsLdpSessionStatsUnknownTlvErrors,
         mplsLdpSessionPeerNextHopAddressType,
         mplsLdpSessionPeerNextHopAddress,
         mplsLdpLibLspUpDownTrapEnable,
         mplsLdpLibLabelInIfIndex,
         mplsLdpLibLabelOutIfIndex,
         mplsLdpLibInLabelType,
         mplsLdpLibInLabel,
         mplsLdpLibOutLabelType,
         mplsLdpLibOutLabel,
         mplsLdpLibOperationStatus,
         mplsLdpLibLspLastChange,
         mplsLdpFecSessionRowPointer

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

     mplsLdpGenericGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpConfGenericIfIndexOrZero,
         mplsLdpConfGenericLabel,
         mplsLdpConfGenericStorageType,
         mplsLdpConfGenericRowStatus
         }
         STATUS    current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations
             using Generic Lables."
         ::= { mplsLdpGroups 2 }

     mplsLdpAtmGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpEntityAtmIfIndexOrZero,
         mplsLdpEntityAtmMergeCap,
         mplsLdpEntityAtmLabelRangeComponents,
         mplsLdpEntityAtmVcDirectionality,
         mplsLdpEntityAtmLsrConnectivity,
         mplsLdpEntityDefaultControlVpi,
         mplsLdpEntityDefaultControlVci,
         mplsLdpEntityUnlabTrafVpi,
         mplsLdpEntityUnlabTrafVci,
         mplsLdpEntityAtmStorageType,
         mplsLdpEntityAtmRowStatus,
         mplsLdpEntityConfAtmLabelRangeMaximumVpi,
         mplsLdpEntityConfAtmLabelRangeMaximumVci,
         mplsLdpEntityConfAtmLabelRangeStorageType,
         mplsLdpEntityConfAtmLabelRangeRowStatus,
         mplsLdpSessionAtmLabelRangeUpperBoundVpi,
         mplsLdpSessionAtmLabelRangeUpperBoundVci

         }
         STATUS    current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations
             over ATM."
         ::= { mplsLdpGroups 3 }

     mplsLdpFrameRelayGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpEntityFrIfIndexOrZero,
         mplsLdpEntityFrMergeCap,
         mplsLdpEntityFrLabelRangeComponents,
         mplsLdpEntityFrLen,
         mplsLdpEntityFrVcDirectionality,
         mplsLdpEntityFrParmsStorageType,
         mplsLdpEntityFrParmsRowStatus,
         mplsLdpConfFrMaximumDlci,
         mplsLdpConfFrStorageType,
         mplsLdpConfFrRowStatus,
         mplsLdpFrSessionMaxDlci,
         mplsLdpFrSessionLen
         }
         STATUS    current
         DESCRIPTION
             "Objects that apply to all MPLS LDP implementations over
             Frame Relay."
         ::= { mplsLdpGroups 4 }

         mplsLdpNotificationsGroup NOTIFICATION-GROUP
             NOTIFICATIONS { mplsLdpFailedInitSessionThresholdExceeded,
                             mplsLdpPathVectorLimitMismatch,
                             mplsLdpSessionUp,
                             mplsLdpSessionDown,
                             mplsLdpLibLspUp,
                             mplsLdpLibLspDown
                            }
             STATUS   current
             DESCRIPTION
                 "The notification(s) which an MPLS LDP implemention
                 is required to implement."
             ::= { mplsLdpGroups 5 }

     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-04.txt>

   Editorial changes, fixing typo's, fixing wrapping lines, etc.

   Updated references for latest drafts, and added [33] and [34] to
   Reference Section.

   Added to the Acknowledgements Section.

   Changed the SYNTAX and DESCRIPTION of the
   'mplsLdpLsrLoopDetectionCapable' object, so that it will also support
   the loop detection by hop count.

   Combined the 'mplsLdpEntityLoopDetectionForPV' and
   'mplsLdpEntityPathVectorLimit' objects.  The functionality of the
   'mplsLdpEntityLoopDectionForPV' is now denoted by the value of 0
   (zero) in the 'mplsLdpEntityPathVectorLimit' object.  This results in
   one less object 'mplsLdpEntityLoopDectionForPV' but does not
   sacrifice functionality.

   Changed 'mplsLdpLibLabelType' into two objects:
   'mplsLdpLibInLabelType' and differ from the egress label type.  The
   MIB now reflects this.

   The following items were changed as a result of the Frame Relay Forum
   dropping support for 17-bit DLCIs:  the MplsLabel TC description has
   been modified, and other Frame Relay Object descriptions were also
   modified (as specified in this section).

   The MplsLabel TC was also modified and reference 3. was added to the
   REFERENCE Clause.

   MplsLdpLabelTypes TC was modified to use an enum.

   InterfaceIndex support was added to the Entity information.  This was
   specifically requested by several members of the working group.  An
   additional table, mplsLdpEntityConfGenericTable as a way to configure
   Generic Labels, and an object, 'mplsLdpConfGenericIfIndexOrZero was
   added to map the InterfaceIndex used by Generic Labels.  Objects were
   also added to the 'mplsLdpEntityAtmParmsTable' and the and
   'mplsLdpEntityFrIfIndex', respectively.

   Changed the name of the 'mplsLdpEntityMtu' object to be
   'mplsLdpEntityMaxPduLength' which is more consistent with the LDP
   Specification.  Also, the description and SYNTAX were changed.

   Changed the SYNTAX of the 'mplsLdpSessionMaxPduLength' to unsigned32
   and changed the Range from (0..65535) to (1..65535).

   Added and improved the front section discussion on SNMP
   Notifications.

   Also, modified the DESCRIPTION clause of the

   Added objects to enable/disable the sending of traps:

   Added an object to enable/disable sending traps for Sessions changing
   from Up to Down, or Down to Up.

   Added notifications to generate traps from session changing from Up
   to Down, or Down to up.

   Added a StorageType object to the Entity and associated tables which
   are configurable.

   Added a Discontinuity Time object to the Entity Table,

   Added discussion on row creation in the Entity and other associated
   Entity tables.  This is a new Section in the Front part of the
   document called:

   Removed the 'mplsLdpEntityControlMethod'.

   Made 'mplsLdpFecLspId' as part of the INDEX for the FEC table.  This
   is to allow FECs to map to multiple LSPs.  Also add a RowPointer to a
   row in the Session Table.

   Added an operation status object, 'mplsLdpLspOperationStatus' and a
   last Change object, 'mplsLdpLspLastChangeto the LIB Table.  This will
   be used to detect whether an LSP has changed its status.

   Changed the name of the mplsLdpPeerTable to the
   mplsLdpEntityPeerTable.  This table contains information relevant to
   Peers which are known to specific Entities.  The indexing of this
   table has also changed to include the Row in the Entity Table that
   this Peer is known by.  The mplsLdpHelloAdjacencyTable and the
   mplsLdpSessionTable have been moved under this table.  Since Hello
   Adjacencies are related to Entity-Peer information and Sessions are
   related to Entity-Peer information this was seen as a comprehensive
   and coherent modelling.  Associated descriptions in the front section
   and in the tables have been changed to all MPLS LDP implementations over
ATM."
         ::= { mplsLdpGroups 2 }

     mplsLdpFrameRelayGroup OBJECT-GROUP
         OBJECTS {
         mplsLdpEntityFrMergeCap,
         mplsLdpEntityFrLabelRangeComponents,
         mplsLdpEntityFrVcDirectionality,
         mplsLdpEntityFrParmsRowStatus,
         mplsLdpConfFrMaximumDlci,
         mplsLdpConfFrLen,
         mplsLdpConfFrRowStatus,
         mplsLdpFrSessionMaxDlci,
         mplsLdpFrSessionLen
         }
         STATUS    current
         DESCRIPTION
             "Objects that apply reflect this change.

   Moved the 'mplsLdpConfFrLen' object from the
   'mplsLdpEntityConfFrLabelRangeTable' to the
   'mplsLdpEntityFrameRelayParmsTable' since the Frame Relay
   interface/port can only use one header length at a time, i.e. a
   specific FR interface supports one address length for all MPLS LDP implementations over VCs on that
   interface. Also, changed the object so that it only supports 10 and
   23 bit DLCI lengths. (The 17 bit length was dropped by the Frame Relay."
         ::= { mplsLdpGroups 3 }

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

     END

5.  Revision History

   This section should be removed when no longer required.)  The name of this document
   object was changed from 'mplsLdpConfFrLen' to 'mplsLdpEntityFrLen' to
   fit in with the 'mplsLdpEntityFrameRelayParmsTable'.

   Removed the seventeenDlciBits(1) value from the mplsLdpFrSessionLen
   object.  (The 17 bit length was dropped by the Frame Relay Forum and
   thus, is published as an
   RFC.

5.1. no longer required.)

   Corrected the range of the 'mplsLdpEntityIndexNext' object to include
   0 (zero).

5.2.  Changes from <draft-ietf-mpls-ldp-mib-03.txt>

   Reworded the description of the mplsLdpAtmSessionTable to clarify
   that one or MORE label range intersection(s) is/are represented in
   this table.

   Reworded the description of the mplsLdpFrameRelaySessionTable to
   clarify that one or MORE label range intersection(s) is/are
   represented in this table.

   Added a new index, mplsLdpSessionPeerIndex, to the
   mplsLdpSessionPeerAddressTable.  This new index uniquely identifies
   the entry within a given session.  (Since  adding
   mplsLdpSessionPeerNextHopAddressType,
   mplsLdpSessionPeerNextHopAddress to the INDEX clause of the
   mplsLdpSessionPeerAddressTable leaves a table with only indices and
   no objects, the work around was to add a new index which uniquely
   differentiates an entry within a given session.)

   Quite a few changes to the mplsLdpPeerTable. First, removed the
   mplsLdpPeerIndex from the mplsLdpPeerTable and other tables.  This
   index served no purpose, so was removed.  Second, removed the
   objects:  mplsLdpPeerInternetworkAddrType, and
   mplsLdpPeerInternetworkAddr. Third, reworded the description of this
   table to include information which is known during Session
   Intialization attempts, the specific information has to do with Loop
   Dection based on Path Vectors.  Since Section 3.5.3 of the LDP Spec
   when describing the PVLim says:  "Although knowledge of a peer's path
   vector limit will not change an LSR's behavior, it does enable the
   LSR to alert an operator to a possible misconfiguration." and the
   object mplsLdpPeerPathVectorLimit is sent as a varbind in the
   mplsLdpPathVectorLimitMismatch notification.

   Removed the mplsLdpPeerIndex from the mplsLdpHelloAdjacencyTable.

   Removed the "IANA Address Family Numbers MIB" section.

   Updated the boiler.me from the ops web page dated Weds., Dec 22,
   1999.

   Updated the Security Section from the ops web page.

   Added the following objects to the mplsLdpEntityTable:
   mplsLdpEntityControlMethod, mplsLdpEntityLoopDectionForPV, and
   mplsLdpEntityPathVectorLimit.

   Removed mplsLdpSessionLabelAdvertisement,
   mplsLdpSessionLoopDetectionForPV, and mplsLdpSessionPathVectorLimit
   from the mplsLdpSessionTable.

   Changed the mplsLdpPathVectorLimitMismatch Notification to send
   mplsLdpEntityPathVectorLimit (instead of
   mplsLdpSessionPathVectorLimit).

   Copied the MplsLabel TC from draft-ietf-mpls-lsr-mib-00.txt and
   replaced the MplsLdpGenAddr for mplsLdpLibInLabel and
   mpslLdpLibOutLabel with MplsLabel.

   The mplsLdpSessionIndex was removed throughout the MIB. This was
   replaced by the object mplsLdpSessionDiscontinuityTime.  The
   motivation was to reduce the number of indices.

   The descriptions for the objects in the mplsLdpSessionStatsTable,
   mplsLdpSessionStatsUnknownMessageTypeErrors and
   mplsLdpSessionStatsUnknownTlvErrors, have been updated to include a
   reference to the mplsLdpSessionDiscontinuityTime object.

5.2.

5.3.  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.

5.3.

5.4.  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.

5.4.

5.5.  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:
        Revisions Section and this (TO DO List) Section.

    o   Need to save all Labels in the LIB (not just ones used in
        forwarding) from Bob Thomas.

    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.  Also,
   some members of the working group were very helpful with comments and
   corrections to the MIB; the authors would like to thank Adrian Farrel
   of Data Connection, and Alan Kullberg from Harris & Jeffries.

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,
     draft-ietf-mpls-framework-05.txt, IronBridge Networks, Ennovate
     Networks, IBM, Nortel Networks, Cisco Systems, July September 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
     draft-ietf-mpls-cr-ldp-03.txt, September 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, A., and T. Nadeau "MPLS Label Switch
     Router Management Information Base Using SMIv2", draft-ietf-mpls-lsr-mib-
     00.txt, Lucent Technologies, draft-ietf-mpls-
     lsr-mib-01.txt, Tachion Networks, Force10 Networks, cisco, June
     1999.

[26] Greene, M., J. Cucchiara, J., and 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.

[33] Rosen, E., Rekhter, Y., Tappan, D., Farinacci, D., Fedorkow, G.,
     Li, T., and A. Conta, "MPLS Label Stack Encoding", draft-ietf-
     mpls-label-encaps-07.txt, September 1999.

[34] Conta, A., Doolan, P., and A. Malis, "Use of Label Switching on
     Frame Relay Networks Specification", draft-ietf-mpls-fr-03.txt,
     November 1998.

9.  Security Considerations

There are a number of management objects defined in this MIB that have a
   MAX-ACCESS clause of read-write and/or read-create.  Such objects may
   be considered sensitive or vulnerable in some network environments.
   The support for SET operations in a non-secure environment without
   proper protection can have a negative effect on network operations.

There are a number of managed objects in this MIB that may contain
   sensitive information. These are contained in the mplsLdpEntityTable.
   The objects contained in this table are responsible for setting up or
   tearing down LSPs.

   It is thus important to control even GET access to these objects and
   possibly to even encrypt the values of these object when sending them
   over the network via SNMP.  Not all versions of SNMP provide features
   for such a secure environment.

SNMPv1 by itself is not a secure environment.  Even if the network
   itself is secure (for example by using IPSec), even then, there is no
   control as to who on the secure network is allowed to access and
   GET/SET (read/change/create/delete) the objects in this MIB.

   It is recommended that the implementers consider the security
   features as provided by the SNMPv3 framework.  Specifically, the use
   of the User-based Security Model RFC 2574 [RFC2574] and the View-
   based Access Control Model RFC 2575 [RFC2575] is recommended.

   It is then a customer/user responsibility to ensure that the SNMP
   entity giving access to an instance of this MIB, is properly
   configured to give access to the objects only to those principals
   (users) that have legitimate rights to indeed GET or SET
   (change/create/delete) them.

10.  Authors' Addresses

                  James V. Luciani
                  Nortel Networks
                  600 Technology Park Drive
                  Billerica,
                  TollBridge Technologies
                  PO BOX 1010
                  Concord, MA 01821
                  Phone: (978) 288-4734 01742
                  Email: jluciani@nortelnetworks.com jluciani@tollbridgetech.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
                  Brix Networks
                  300 Concord Ave.
                  Billerica, MA  01821
                  Phone: (978) 439-1523
                  Email: jcucchiara@brixnet.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.