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Versions: (draft-nadeau-mpls-lc-if-mib) 00 01 02 03 04 05 06 07 08 RFC 4368

Network Working Group                                  Thomas D. Nadeau
Internet Draft                                        Subrahmanya Hegde
Expires:   April 2005                               Cisco Systems, Inc.

                                                           October 2004

      Multiprotocol Label Switching (MPLS) Label-Controlled ATM
            and Frame-Relay Management Interface Definition

                   draft-ietf-mpls-lc-if-mib-04.txt

Status of this Memo

  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 a "work in progress."

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

  The list of Internet-Draft Shadow Directories can be accessed at
  http://www.ietf.org/shadow.html

  By submitting this Internet-Draft, I certify that any applicable
  patent or other IPR claims of which I am aware have been disclosed, or
  will be disclosed, and any of which I become aware will be disclosed,
  in accordance with RFC 3668.


Abstract

   This memo defines two MIB modules and corresponding MIB Object
   Definitions that describe how label switching controlled
   Frame-Relay and ATM interfaces can be managed given the
   interface stacking as defined in the MPLS-LSR-STD-MIB and
   MPLS-TE-STD-MIB.


Table of Contents
  1.  Introduction ..............................................  3
  2.  Terminology ...............................................  3
  3.  The SNMP Management Framework .............................  3
  4.  Interface Stacking of LC-ATM and LC-FR ....................  5
  5.  MPLS Label Controlled ATM MIB Definitions ................. 13
  6.  MPLS Label Controlled Frame Relay MIB Definitions ......... 13
  7.  Security Considerations ................................... 51
  8.  References ................................................ 52
  10. Authors' Addresses ........................................ 54
  11. Copyright Notice........................................... 55



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  12. Full Copyright Statement................................... 55
  13. Intellectual Property...................................... 55
  14. IANA Considerations........................................ 55
  15  Acknowledgments............................................ 52


1. Introduction

   This memo defines how label switching controlled Frame-Relay
   [RFC3034] and ATM [RFC3035] interfaces can be realized given
   the interface stacking as defined in the MPLS-LSR-STD [LSRMIB]
   and MPLS-TE-STD [TEMIB] MIBs.  This document also contains a
   MIB module that sparsely augments the MPLS-LSR-STD MIB's
   mplsInterfaceConfTable in such a way as to identify which
   MPLS-type interfaces have LC-ATM or LC-FR capabilities.
   Comments should be made directly to the MPLS mailing list at
   mpls@uu.net.

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
   NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   RFC 2119, reference [RFC2119].


2. Terminology

   This document uses terminology from the document describing the
   MPLS architecture [RFC3031], as well as RFC3035 and RFC3034.
   Specifically, the following terms will be used in this document.

   LC-FR   RFC3034 defines a label switching controlled Frame Relay
           (LC-FR) interface a Frame-Relay interface controlled by the
           label switching control component.  Packets traversing
           such an interface carry labels in the DLCI field

   LC-ATM RFC3035 defines a label switching controlled ATM (LC-ATM)
          interface as an ATM interface controlled by the label
          switching control component.  When a packet traversing such
          an interface is received, it is treated as a labeled packet.
          The packet's top label is inferred either from the contents
          of the VCI field or the combined contents of the VPI and VCI
          fields. Any two LDP peers which are connected via an LC-ATM
          interface will use LDP negotiations to determine which of
          these cases is applicable to that interface.
          Static configuration of labels is also possible.

    When LDP is used to distribute labels for use on label-controlled
    interfaces, label configuration information may be available in the
    MPLS-LDP-ATM-STD-MIB [LDPMIB] when LC-ATM interfaces are used, or
    the MPLS-LDP-FRAME-RELAY-STD-MIB [LDPMIB] when LC-FR interfaces



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    are used. Specifically,

4. The SNMP Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [RFC2580].

5. Interface Stacking of LC-ATM

   Since LC-ATM interfaces [RFC2863] can carry labeled MPLS
   traffic, they too are considered MPLS subinterfaces with
   ifType = mpls(166). They differ slightly in their capability
   from a packet-oriented MPLS interface in that they may
   carry ATM or Frame-Relay encapsulated traffic. It is
   thus beneficial to identify them as such. To identify
   them as such, two tables are defined which extend the
   MPLS-LSR-STD MIB's mplsInterfaceTable (see section 6 for
   LC-ATM or 7 for LC-FR).

6. MPLS Label Controlled ATM MIB Definitions

MPLS-LC-ATM-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
   MODULE-IDENTITY, OBJECT-TYPE
      FROM SNMPv2-SMI
   MODULE-COMPLIANCE, OBJECT-GROUP
      FROM SNMPv2-CONF
   RowStatus, StorageType, TruthValue
      FROM SNMPv2-TC
   AtmVpIdentifier
      FROM ATM-TC-MIB              -- RFC2514
   mplsStdMIB, MplsAtmVcIdentifier
      FROM MPLS-TC-STD-MIB         -- RFC3811
   mplsInterfaceIndex
      FROM MPLS-LSR-STD-MIB        -- RFC3813
   ;

mplsLcAtmStdMIB MODULE-IDENTITY
   LAST-UPDATED "200410121200Z"  -- 12 October 2004 12:00:00 GMT
   ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"



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   CONTACT-INFO
       "        Thomas D. Nadeau
        Postal: Cisco Systems, Inc.
                250 Apollo Drive
                Chelmsford, MA 01824
        Tel:    +1-978-244-3051
        Email:  tnadeau@cisco.com

                Subrahmanya Hegde
        Postal: Cisco Systems, Inc.
                225 East Tazman Drive
        Tel:    +1-408-525-6562
        Email:  subrah@cisco.com
        General comments should be sent to mpls@uu.net
       "
   DESCRIPTION
       "This MIB contains managed object definitions for
        MPLS Label Controlled ATM interfaces as defined in
        RFC3035.

        Copyright (C) The Internet Society (2004).  This
        version of this MIB module is part of RFCXXXX; see
        the RFC itself for full legal notices."
       -- RFC Editor please fill in XXXX

   -- Revision history.
   REVISION
        "200410121200Z"  -- 12 October 2004 12:00:00 GMT
   DESCRIPTION
       "Initial revision, published as part of RFC XXXX."
   ::= { mplsStdMIB XXX } -- To Be Assigned by IANA

-- Top level components of this MIB.

-- Tables, Scalars, Notifications, Conformance

mplsLcAtmStdNotifications OBJECT IDENTIFIER ::= { mplsLcAtmStdMIB 0 }

mplsLcAtmStdObjects       OBJECT IDENTIFIER ::= { mplsLcAtmStdMIB 1 }

mplsLcAtmStdConformance   OBJECT IDENTIFIER ::= { mplsLcAtmStdMIB 2 }

-- MPLS LC-ATM Interface Configuration Table.
mplsLcAtmStdInterfaceConfTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsLcAtmStdInterfaceConfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies per-interface MPLS LC-ATM
        capability and associated information. In particular,



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        this table sparsely augments the MPLS-LSR-STD-MIB's
        mplsInterfaceConfTable."
   ::= { mplsLcAtmStdObjects 1 }

mplsLcAtmStdInterfaceConfEntry OBJECT-TYPE
   SYNTAX        MplsLcAtmStdInterfaceConfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table is created by an LSR for
        every interface capable of supporting MPLS LC-ATM.
        Each entry in this table will exist only if a
        corresponding entry in ifTable and mplsInterfaceConfTable
        exist. If the associated entries in ifTable and
        mplsInterfaceConfTable are deleted, the corresponding
        entry in this table must also be deleted shortly
        thereafter. "
   INDEX       { mplsInterfaceIndex }
      ::= { mplsLcAtmStdInterfaceConfTable 1 }

MplsLcAtmStdInterfaceConfEntry ::= SEQUENCE {
   mplsLcAtmStdCtrlVpi                 AtmVpIdentifier,
   mplsLcAtmStdCtrlVci                 MplsAtmVcIdentifier,
   mplsLcAtmStdUnlabTrafVpi            AtmVpIdentifier,
   mplsLcAtmStdUnlabTrafVci            MplsAtmVcIdentifier,
   mplsLcAtmStdVcMerge                 TruthValue,
   mplsLcAtmVcDirectlyConnected        TruthValue,
   mplsLcAtmLcAtmVPI                   AtmVpIdentifier,
   mplsLcAtmStdIfConfRowStatus         RowStatus,
   mplsLcAtmStdIfConfStoreType         StorageType
}

mplsLcAtmStdCtrlVpi OBJECT-TYPE
   SYNTAX        AtmVpIdentifier
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the VPI value over which this
        LSR is willing to accept control traffic on
        this interface."
   ::= { mplsLcAtmStdInterfaceConfEntry 1 }

mplsLcAtmStdCtrlVci OBJECT-TYPE
   SYNTAX        MplsAtmVcIdentifier
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the VCI value over which this
        LSR is willing to accept control traffic
        on this interface."



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   ::= { mplsLcAtmStdInterfaceConfEntry 2 }

mplsLcAtmStdUnlabTrafVpi OBJECT-TYPE
   SYNTAX        AtmVpIdentifier
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the max VPI value over which this
        LSR is willing to accept unlabeled traffic
        on this interface."
   ::= { mplsLcAtmStdInterfaceConfEntry 3 }

mplsLcAtmStdUnlabTrafVci OBJECT-TYPE
   SYNTAX        MplsAtmVcIdentifier
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the VCI value over which this
        LSR is willing to accept unlabled traffic
        on this interface."
   ::= { mplsLcAtmStdInterfaceConfEntry 4 }

mplsLcAtmStdVcMerge OBJECT-TYPE
   SYNTAX      TruthValue
   MAX-ACCESS  read-create
   STATUS      current
   DESCRIPTION
       "If set to true(1), indicates that this interface
        is capabile of ATM VC merge, otherwise it MUST
        be set to false(2)."
   DEFVAL     { false }
   ::= { mplsLcAtmStdInterfaceConfEntry 5 }

mplsLcAtmVcDirectlyConnected OBJECT-TYPE
   SYNTAX      TruthValue
   MAX-ACCESS  read-create
   STATUS      current
   DESCRIPTION
     "This value indicates whether an LC-ATM is directly
      or indirectly (by means of a VP) connected. If set to
      true(1), indicates that this interface is directly
      connected LC-ATM, otherwise it MUST be set to
      false(2)."
   DEFVAL     { true }
   ::= { mplsLcAtmStdInterfaceConfEntry 6 }

mplsLcAtmLcAtmVPI OBJECT-TYPE
   SYNTAX        AtmVpIdentifier
   MAX-ACCESS    read-create
   STATUS        current



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   DESCRIPTION
     "This is the VPI value used for indirectly
      connected LC-ATM interfaces. For these
      interfaces, the VPI field is not
      available to MPLS, and the label MUST be
      encoded entirely within the VCI field.
      (see RFC 3035). If the interface is directly
      connected, this value MUST be set to zero."
   DEFVAL  { 0 }
   ::= { mplsLcAtmStdInterfaceConfEntry 7 }

mplsLcAtmStdIfConfRowStatus OBJECT-TYPE
   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is object is used to create and
        delete entries in this table. When configuring
        entries in this table, the corresponding
        ifEntry and mplsInterfaceConfEntry
        MUST exist before hand. If an entry is attempted
        to be created by a manager for a corresponding
        mplsInterfaceConfEntry that does not support LC-ATM,
        the agent MUST return an inconsistentValue error.
        If this table is implemented read-only, then the
        agent must set this object to active(1) when this
        row is made active. If this table is implemented
        writable, then an agent MUST not allow modification
        to its objects once this value is set to active(1)."
   ::= { mplsLcAtmStdInterfaceConfEntry 8 }

 mplsLcAtmStdIfConfStoreType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This SNMP storage type for this entry. All objects
        are writable for permanent objects."
   ::= { mplsLcAtmStdInterfaceConfEntry 9 }

-- End of mplsLcAtmStdInterfaceConfTable

-- Module compliance.

mplsLcAtmStdCompliances
   OBJECT IDENTIFIER ::= { mplsLcAtmStdConformance 1 }

mplsLcAtmStdGroups
   OBJECT IDENTIFIER ::= { mplsLcAtmStdConformance 2 }




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-- Compliance requirement for full compliance

mplsLcAtmStdModuleFullCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
       "Compliance statement for agents that provide
        full support for MPLS-LC-ATM-STD-MIB. Such
        devices can be monitored and also be configured
        using this MIB module."
   MODULE -- this module
      MANDATORY-GROUPS {
         mplsLcAtmStdIfGroup
      }

   ::= { mplsLcAtmStdCompliances 1 }

-- Compliance requirement for read-only implementations.

mplsLcAtmStdModuleROCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
       "Compliance requirement for implementations that only
        provide read-only support for MPLS-LC-ATM-STD-MIB.
        Such devices can be monitored but cannot be configured
        using this MIB module.
       "

   MODULE -- this module
      MANDATORY-GROUPS {
         mplsLcAtmStdIfGroup
      }

      -- mplsLcAtmStdInterfaceConfTable

      OBJECT      mplsLcAtmStdCtrlVpi
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmStdCtrlVci
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmStdUnlabTrafVpi
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmStdUnlabTrafVci



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      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmStdVcMerge
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmStdIfConfRowStatus
      SYNTAX       RowStatus { active(1), notInService(2) }
      WRITE-SYNTAX RowStatus { active(1), notInService(2),
                               createAndGo(4), destroy(6)
                             }
      DESCRIPTION "Support for createAndWait and notReady is
                   not required."

      OBJECT      mplsLcAtmVcDirectlyConnected
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmLcAtmVPI
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcAtmStdIfConfStoreType
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."
   ::= { mplsLcAtmStdCompliances 2 }


-- Units of conformance.

mplsLcAtmStdIfGroup OBJECT-GROUP
   OBJECTS {
             mplsLcAtmStdCtrlVpi,
             mplsLcAtmStdCtrlVci,
             mplsLcAtmStdUnlabTrafVpi,
             mplsLcAtmStdUnlabTrafVci,
             mplsLcAtmStdVcMerge,
             mplsLcAtmVcDirectlyConnected,
             mplsLcAtmLcAtmVPI,
             mplsLcAtmStdIfConfRowStatus,
             mplsLcAtmStdIfConfStoreType
    }
   STATUS  current
   DESCRIPTION



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          "Collection of objects needed for MPLS LC-ATM
           interface configuration."
   ::= { mplsLcAtmStdGroups 1 }
END

7. MPLS Label Controlled Frame-Relay MIB Definitions


MPLS-LC-FR-STD-MIB DEFINITIONS ::= BEGIN
IMPORTS
   MODULE-IDENTITY, OBJECT-TYPE
      FROM SNMPv2-SMI
   MODULE-COMPLIANCE, OBJECT-GROUP
      FROM SNMPv2-CONF
   RowStatus, StorageType
      FROM SNMPv2-TC
   mplsInterfaceIndex
      FROM MPLS-LSR-STD-MIB      -- RFC3813
   DLCI
      FROM FRAME-RELAY-DTE-MIB   -- RFC2115
   mplsStdMIB
      FROM MPLS-TC-STD-MIB       -- RFC3811
   ;
mplsLcFrStdMIB MODULE-IDENTITY
   LAST-UPDATED "200405011200Z"  -- 01 May 2004 12:00:00 GMT
   ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"
   CONTACT-INFO
       "        Thomas D. Nadeau
                Cisco Systems, Inc.
        Email:  tnadeau@cisco.com

                Subrahmanya Hegde
        Email:  subrah@cisco.com
        General comments should be sent to mpls@uu.net
       "
   DESCRIPTION
       "This MIB contains managed object definitions for
        MPLS Label Controlled Frame-Relay interfaces as defined
        in RFC3034.

        Copyright (C) The Internet Society (2004).  This
        version of this MIB module is part of RFCXXXX; see
        the RFC itself for full legal notices."
       -- RFC Editor please fill in XXXX

   -- Revision history.
   REVISION
        "200405011200Z"  -- 01 May 2004 12:00:00 GMT
   DESCRIPTION
       "Initial draft revision."



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   ::= { mplsStdMIB XXX } -- To Be Assigned by IANA

-- Top level components of this MIB.
-- Tables, Scalars, Notifications, Conformance

mplsLcFrStdNotifications OBJECT IDENTIFIER ::= { mplsLcFrStdMIB 0 }
mplsLcFrStdObjects       OBJECT IDENTIFIER ::= { mplsLcFrStdMIB 1 }
mplsLcFrStdConformance   OBJECT IDENTIFIER ::= { mplsLcFrStdMIB 2 }

-- MPLS LC-FR Interface Configuration Table.
mplsLcFrStdInterfaceConfTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsLcFrStdInterfaceConfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies per-interface MPLS LC-FR
        capability and associated information. In particular,
        this table sparsely augments the MPLS-LSR-STD-MIB's
        mplsInterfaceConfTable."
   ::= { mplsLcFrStdObjects 1 }

mplsLcFrStdInterfaceConfEntry OBJECT-TYPE
   SYNTAX        MplsLcFrStdInterfaceConfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table is created by an LSR for
        every interface capable of supporting MPLS LC-FR.
        Each entry in this table will exist only if a
        corresponding entry in ifTable and mplsInterfaceConfTable
        exist. If the associated entries in ifTable and
        mplsInterfaceConfTable are deleted, the corresponding
        entry in this table must also be deleted shortly
        thereafter. "
   INDEX       { mplsInterfaceIndex }
      ::= { mplsLcFrStdInterfaceConfTable 1 }

MplsLcFrStdInterfaceConfEntry ::= SEQUENCE {
   mplsLcFrStdTrafficMinDlci          DLCI,
   mplsLcFrStdTrafficMaxDlci          DLCI,
   mplsLcFrStdCtrlMinDlci             DLCI,
   mplsLcFrStdCtrlMaxDlci             DLCI,
   mplsLcFrStdInterfaceConfRowStatus  RowStatus,
   mplsLcFrStdInterfaceConfStoreType  StorageType
}

mplsLcFrStdTrafficMinDlci OBJECT-TYPE
   SYNTAX        DLCI
   MAX-ACCESS    read-create
   STATUS        current



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   DESCRIPTION
       "This is the minimum DLCI value over which this
        LSR is willing to accept traffic on this
        interface."
   ::= { mplsLcFrStdInterfaceConfEntry 1 }

mplsLcFrStdTrafficMaxDlci OBJECT-TYPE
   SYNTAX        DLCI
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the max DLCI value over which this
        LSR is willing to accept traffic on this
        interface."
   ::= { mplsLcFrStdInterfaceConfEntry 2 }

mplsLcFrStdCtrlMinDlci OBJECT-TYPE
   SYNTAX        DLCI
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the min DLCI value over which this
        LSR is willing to accept control traffic
        on this interface."
   ::= { mplsLcFrStdInterfaceConfEntry 3 }

mplsLcFrStdCtrlMaxDlci OBJECT-TYPE
   SYNTAX        DLCI
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the max DLCI value over which this
        LSR is willing to accept control traffic
        on this interface."
   ::= { mplsLcFrStdInterfaceConfEntry 4 }

mplsLcFrStdInterfaceConfRowStatus OBJECT-TYPE
   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is object is used to create and
        delete entries in this table. When configuring
        entries in this table, the corresponding ifEntry and
        mplsInterfaceConfEntry MUST exist before hand. If an entry
        is attempted to be created by a manager for a corresponding
        mplsInterfaceConfEntry that does not support LC-FR,
        the agent MUST return an inconsistentValue error.
        If this table is implemented read-only, then the
        agent must set this object to active(1) when this



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        row is made active. If this table is implemented
        writable, then an agent MUST not allow modification
        to its objects once this value is set to active(1)."
   ::= { mplsLcFrStdInterfaceConfEntry 5 }

 mplsLcFrStdInterfaceConfStoreType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This SNMP storage type for this entry. All objects
        are writable for permanent entries."
   ::= { mplsLcFrStdInterfaceConfEntry 6 }

-- End of mplsLcFrStdInterfaceConfTable

-- Module compliance.

mplsLcFrStdCompliances
   OBJECT IDENTIFIER ::= { mplsLcFrStdConformance 1 }

mplsLcFrStdGroups
   OBJECT IDENTIFIER ::= { mplsLcFrStdConformance 2 }


-- Compliance requirement for full compliance

mplsLcFrStdModuleFullCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
       "Compliance statement for agents that provide
        full support for MPLS-LC-FR-STD-MIB. Such
        devices can be monitored and also be configured
        using this MIB module."
   MODULE -- this module
      MANDATORY-GROUPS {
         mplsLcFrStdIfGroup
      }

   ::= { mplsLcFrStdCompliances 1 }


-- Compliance requirement for read-only implementations.

mplsLcFrStdModuleReadOnlyCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
       "Compliance requirement for implementations that only
        provide read-only support for MPLS-LC-FR-STD-MIB.
        Such devices can be monitored but cannot be configured



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        using this MIB module.
       "
   MODULE -- this module
      -- The mandatory groups have to be implemented
      -- by all LSRs.  However, they may all be supported
      -- as read-only objects in the case where manual
      -- configuration is unsupported.
      MANDATORY-GROUPS {
         mplsLcFrStdIfGroup
      }

      -- mplsLcFrStdInterfaceConfTable

      OBJECT     mplsLcFrStdTrafficMinDlci
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT     mplsLcFrStdTrafficMaxDlci
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcFrStdCtrlMinDlci
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT      mplsLcFrStdCtrlMaxDlci
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."

      OBJECT       mplsLcFrStdInterfaceConfRowStatus
      SYNTAX       RowStatus { active(1), notInService(2) }
      WRITE-SYNTAX RowStatus { active(1), notInService(2),
                               createAndGo(4), destroy(6)
                             }
      DESCRIPTION "Support for createAndWait and notReady is
                   not required."

      OBJECT      mplsLcFrStdInterfaceConfStoreType
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."
   ::= { mplsLcFrStdCompliances 2 }

-- Units of conformance.

mplsLcFrStdIfGroup OBJECT-GROUP



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   OBJECTS {
        mplsLcFrStdTrafficMinDlci,
        mplsLcFrStdTrafficMaxDlci,
        mplsLcFrStdCtrlMinDlci,
        mplsLcFrStdCtrlMaxDlci,
        mplsLcFrStdInterfaceConfRowStatus,
        mplsLcFrStdInterfaceConfStoreType
    }
   STATUS  current

   DESCRIPTION
          "Collection of objects needed for MPLS LC-FR
           interface configuration."
   ::= { mplsLcFrStdGroups 1 }
END


8.   Security Considerations

   It is clear that these MIB modules are potentially useful for
   monitoring of MPLS LSRs supporting LC-ATM and/or LC-FR.  These
   MIB can also be used for configuration of certain objects, and
   anything that can be configured can be incorrectly configured,
   with potentially disastrous results.

   There are a number of management objects defined in this MIB module
   with 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.  These are the tables and objects and their
   sensitivity/vulnerability:

   o    the MplsLcAtmStdInterfaceConfTable and
        mplsLcFrStdInterfaceConfTable collectively
        contain objects which may be used to provision MPLS LC or
        FR-enabled interfaces.  Unauthorized access to objects in
        these tables, could result in disruption of traffic on the
        network.  This is especially true if traffic has been
        established over these interfaces.  The use of stronger
        mechanisms such as SNMPv3 security should be considered
        where possible.  Specifically,SNMPv3 VACM and USM MUST be
        used with any v3 agent which implements this MIB module.
        Administrators should consider whether read access to
        these objects should be allowed, since read access may be
        undesirable under certain circumstances.

   Some of the readable objects in this MIB module "i.e., objects with a
   MAX-ACCESS other than not-accessible" may be considered sensitive or
   vulnerable in some network environments.  It is thus important to



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   control even GET and/or NOTIFY access to these objects and possibly
   to even encrypt the values of these objects when sending them over
   the network via SNMP.  These are the tables and objects and their
   sensitivity/vulnerability:

   o    the MplsLcAtmStdInterfaceConfTable and
        mplsLcFrStdInterfaceConfTable collectively
        collectively show the LC-ATM and/or LC-FR interfaces,
        their associated configurations and their linkages to other
        MPLS-related configuration and/or performanc statistics.
        Administrators not wishing to reveal this information should
        consider these objects sensitive/vulnerable and take
        precautions so they are not revealed.

   SNMP versions prior to SNMPv3 did not include adequate security.
   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 module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework "see [RFC3410], section 8",
   including full support for the SNMPv3 cryptographic mechanisms "for
   authentication and privacy".

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED. Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an
   instance of this MIB module, 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.

9.   References

9.1 Normative References

   [RFC2115]     Brown, C., Baker, F., "Management Information Base
                 for Frame Relay DTEs Using SMIv2", RFC2115, September
                 1997.

   [RFC2514]     Noto, M., Spiegel, E., Tesink, K., et al., "Definitions
                 of Textual Conventions and OBJECT-IDENTITIES for ATM
                 Management", RFC2514, February 1999.

   [RFC2863]     McCloghrie, K. and F. Kastenholz, "The Interfaces
                 Group MIB", RFC 2863, June 2000.

   [RFC3031]     Rosen, E., Viswanathan, A., and R. Callon,
                 "Multiprotocol Label Switching Architecture", RFC



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                 3031, January 2001.

   [TEMIB]       Srinivasan, C., Viswanathan, A. and Nadeau, T., "MPLS
                 Traffic Engineering Management Information Base ",
                 RFC3812, June 2004.

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

   [TCMIB]       Nadeau, T., Cucchiara, J., Editors,
                 "Definition of Textual Conventions and OBJECT-
                 IDENTITIES for Multi-Protocol Label Switching (MPLS)
                 Management", RFC3811, June 2004.

9.2 Informative References

   [RFC2119]     S. Bradner, "Key Words for use in RFCs to Indicate
                 Requirement Levels", RFC 2119, BCP 14, March 1997.

   [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.

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

   [LDPMIB]      J. Cucchiara, et al., "Definitions of
                 Managed Objects for the Multiprotocol Label
                 Switching, Label Distribution Protocol
                 (LDP)", <draft-ietf-mpls-ldp-mib-14.txt>,
                 November 2003.


10.  Authors' Addresses

   Thomas D. Nadeau                Subrahmanya Hegde
   Cisco Systems, Inc.             Cisco Systems, Inc.



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   300 Beaver Brook Road           225 East Tazman Drive
   Boxboro, MA 01719               San Jose, CA
   Phone: +1-978-936-1470          Phone: +1-408-525-6562
   Email: tnadeau@cisco.com        Email: subrah@cisco.com


11. Copyright Notice

Copyright (C) The Internet Society (2004). All Rights Reserved.

12. Full Copyright Statement

   Copyright (C) The Internet Society (2004).  This document is subject
   to the rights, licenses and restrictions contained in BCP 78 and
   except as set forth therein, the authors retain all their rights.

   This document and the information contained herein are provided on an
   "AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
   OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY AND THE INTERNET
   ENGINEERING TASK FORCE DISCLAIM 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.

13. Intellectual Property

   The IETF takes no position regarding the validity or scope of any
   Intellectual Property Rights or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; nor does it represent that it has
   made any independent effort to identify any such rights.  Information
   on the procedures with respect to rights in RFC documents can be
   found in BCP 78 and BCP 79.

   Copies of IPR disclosures made to the IETF Secretariat and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementers or users of this
   specification can be obtained from the IETF on-line IPR repository at
   http://www.ietf.org/ipr.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights that may cover technology that may be required to implement
   this standard.  Please address the information to the IETF at ietf-
   ipr@ietf.org.

14.  IANA Considerations




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   As described in and as requested in the MPLS-TC-STD-MIB
   [TCMIB], MPLS related standards track MIB modules should be
   rooted under the mplsStdMIB subtree.  There are 2 MPLS MIB Modules
   contained in this document, each of the following "IANA
   Considerations" subsections requests IANA for a new assignment under
   the mplsStdMIB subtree.  New assignments can only be made via a
   Standards Action as specified in [RFC2434].

14.1.  IANA Considerations for MPLS-LC-ATM-STD-MIB

   The IANA is requested to assign { mplsStdMIB 9 } to the
   MPLS-LC-ATM-STD-MIB module specified in this document.

14.2.  IANA Considerations for MPLS-LC-FR-STD-MIB

   The IANA is requested to assign { mplsStdMIB 10 } to the
   MPLS-LC-FR-STD-MIB module specified in this document.


15.   Acknowledgments

   We wish to thank Joan Cucchiara and Carlos Pignataro for
   their comments on this document.






























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