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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: October 2004                               Cisco Systems, Inc.

                                                          January 2004

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

                   draft-ietf-mpls-lc-if-mib-01.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 In ternet 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.


Table of Contents
  1. Abstract ..................................................  2
  2. Introduction ..............................................  3
  3. Terminology ...............................................  3
  4. The SNMP Management Framework .............................  3
  5. Interface Stacking of LC-ATM and LC-FR ....................  5
  6. MPLS Label Controlled ATM MIB Definitions ................. 13
  7. MPLS Label Controlled Frame Relay MIB Definitions ......... 13
  8. Security Considerations ................................... 51
  9. References ................................................ 52
  9.1 Normative References...................................... 52
  9.2 Informative References.................................... 52
  10. Authors' Addresses ....................................... 54
  11. Full Copyright Statement ................................. 55
  12.  Intellectual Property Notice ............................ 52
  13.  IANA Considerations ..................................... 52
  14.1.  IANA Considerations for MPLS-LC-ATM-MIB ............... 52
  14.2.  IANA Considerations for MPLS-LC-FR-MIB ................ 52

1. Abstract



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   This memo defines how label switching controlled Frame-Relay
   and ATM interfaces can be realized given the interface stacking
   as defined in the MPLS-LSR and MPLS-TE MIBs.


2. 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 [LSRMIB]
   and MPLS-TE [TEMIB] MIBs.  This document also contains a
   MIB module that extends the MPLS-LSR 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.

   This memo does not, in its draft form, specify a standard for the
   Internet community.

   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].


3. 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.


4. The SNMP Management Framework



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   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 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 MIB's mplsInterfaceConfTable (see section 7 for
   LC-ATM or 8 for LC-FR).

6. MPLS Label Controlled ATM MIB Definitions

MPLS-LC-ATM-MIB-DRAFT-01 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
   mplsStdMIB, MplsAtmVcIdentifier
      FROM MPLS-TC-STD-MIB
   mplsInterfaceIndex
      FROM MPLS-LSR-STD-MIB
   ;

mplsLcAtmMIB MODULE-IDENTITY
   LAST-UPDATED "200401301200Z"  -- 30 January 2004 12:00:00 GMT
   ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"
   CONTACT-INFO
       "        Thomas D. Nadeau
        Postal: Cisco Systems, Inc.



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                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."

   -- Revision history.
   REVISION
       "200401301200Z"  -- 30 January 2004 12:00:00 GMT
   DESCRIPTION
       "Initial revision, published as part of RFC XXXX."
   ::= { mplsStdMIB XXX } -- To Be Assigned by IANA, maybe 6

-- Top level components of this MIB.

-- Tables, Scalars, Notifications, Conformance

mplsLcAtmNotifications OBJECT IDENTIFIER ::= { mplsLcAtmMIB 0 }

mplsLcAtmObjects       OBJECT IDENTIFIER ::= { mplsLcAtmMIB 1 }

mplsLcAtmConformance   OBJECT IDENTIFIER ::= { mplsLcAtmMIB 2 }

-- MPLS LC-ATM Interface Configuration Table.
mplsLcAtmIfConfTable  OBJECT-TYPE
   SYNTAX        SEQUENCE OF MplsLcAtmIfConfEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "This table specifies per-interface MPLS LC-ATM
        capability and associated information. In particular,
        this table extends the MPLS-LSR MIB's
        mplsInterfaceConfTable."
   ::= { mplsLcAtmObjects 1 }

mplsLcAtmIfConfEntry OBJECT-TYPE
   SYNTAX        MplsLcAtmIfConfEntry
   MAX-ACCESS    not-accessible
   STATUS        current



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   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 }
      ::= { mplsLcAtmIfConfTable 1 }

MplsLcAtmIfConfEntry ::= SEQUENCE {
   mplsLcAtmCtrlVpi          AtmVpIdentifier,
   mplsLcAtmCtrlVci          MplsAtmVcIdentifier,
   mplsLcAtmUnlabTrafVpi     AtmVpIdentifier,
   mplsLcAtmUnlabTrafVci     MplsAtmVcIdentifier,
   mplsLcAtmVcMerge          TruthValue,
   mplsLcAtmIfConfRowStatus  RowStatus,
   mplsLcAtmIfConfStoreType  StorageType
}

mplsLcAtmCtrlVpi 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."
   ::= { mplsLcAtmIfConfEntry 1 }

mplsLcAtmCtrlVci 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."
   ::= { mplsLcAtmIfConfEntry 2 }

mplsLcAtmUnlabTrafVpi 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."



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   ::= { mplsLcAtmIfConfEntry 3 }

mplsLcAtmUnlabTrafVci 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."
   ::= { mplsLcAtmIfConfEntry 4 }

mplsLcAtmVcMerge OBJECT-TYPE
   SYNTAX      TruthValue
   MAX-ACCESS  read-create
   STATUS      current
   DESCRIPTION
       "If set to true(0), indicates that this interface
        is capabile of ATM VC merge, otherwise it MUST
        be set to false(1)."
   DEFVAL     { false }
   ::= { mplsLcAtmIfConfEntry 5 }

mplsLcAtmIfConfRowStatus 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
        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)."
   ::= { mplsLcAtmIfConfEntry 6 }

 mplsLcAtmIfConfStoreType 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."



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   ::= { mplsLcAtmIfConfEntry 7 }

-- End of mplsLcAtmIfConfTable

-- Module compliance.

mplsLcAtmCompliances
   OBJECT IDENTIFIER ::= { mplsLcAtmConformance 1 }

mplsLcAtmGroups
   OBJECT IDENTIFIER ::= { mplsLcAtmConformance 2 }

mplsLcAtmModuleCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
       "Compliance statement for agents that support
        MPLS LC-ATM Interfaces."
   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 {
         mplsLcAtmIfGroup
      }

      -- mplsLcAtmIfConfTable

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

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

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

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

      OBJECT      mplsLcAtmVcMerge
      MIN-ACCESS  read-only



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      DESCRIPTION
          "Write access is not required."

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

      OBJECT      mplsLcAtmIfConfStoreType
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."
   ::= { mplsLcAtmCompliances 1 }

-- Units of conformance.

mplsLcAtmIfGroup OBJECT-GROUP
   OBJECTS {
             mplsLcAtmCtrlVpi,
             mplsLcAtmCtrlVci,
             mplsLcAtmUnlabTrafVpi,
             mplsLcAtmUnlabTrafVci,
             mplsLcAtmVcMerge,
             mplsLcAtmIfConfRowStatus,
             mplsLcAtmIfConfStoreType
    }
   STATUS  current
   DESCRIPTION
          "Collection of objects needed for MPLS LC-ATM
           interface configuration."
   ::= { mplsLcAtmGroups 1 }
END

7. MPLS Label Controlled Frame-Relay MIB Definitions

MPLS-LC-FR-MIB-DRAFT-01 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
   DLCI
      FROM FRAME-RELAY-DTE-MIB
   mplsStdMIB
      FROM MPLS-TC-STD-MIB
   ;



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mplsLcFrMIB MODULE-IDENTITY
   LAST-UPDATED "200401301200Z"  -- 30 January 2004 12:00:00 GMT
   ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"
   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 Frame-Relay interfaces as defined
        in RFC3034."

   -- Revision history.
   REVISION
        "200401301200Z"  -- 30 January 2004 12:00:00 GMT
   DESCRIPTION
       "Initial draft revision."
   ::= { mplsStdMIB XXX } -- To Be Assigned by IANA, maybe 7

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

mplsLcFrNotifications OBJECT IDENTIFIER ::= { mplsLcFrMIB 0 }
mplsLcFrObjects       OBJECT IDENTIFIER ::= { mplsLcFrMIB 1 }
mplsLcFrConformance   OBJECT IDENTIFIER ::= { mplsLcFrMIB 2 }

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

mplsLcFrIfConfEntry OBJECT-TYPE
   SYNTAX        MplsLcFrIfConfEntry



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   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 }
      ::= { mplsLcFrIfConfTable 1 }

MplsLcFrIfConfEntry ::= SEQUENCE {
   mplsLcFrTrafficMinDlci   DLCI,
   mplsLcFrTrafficMaxDlci   DLCI,
   mplsLcFrCtrlMinDlci      DLCI,
   mplsLcFrCtrlMaxDlci      DLCI,
   mplsLcFrIfConfRowStatus  RowStatus,
   mplsLcFrIfConfStoreType  StorageType
}

mplsLcFrTrafficMinDlci OBJECT-TYPE
   SYNTAX        DLCI
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This is the minimum DLCI value over which this
        LSR is willing to accept traffic on this
        interface."
   ::= { mplsLcFrIfConfEntry 1 }

mplsLcFrTrafficMaxDlci 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."
   ::= { mplsLcFrIfConfEntry 2 }

mplsLcFrCtrlMinDlci 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



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        on this interface."
   ::= { mplsLcFrIfConfEntry 3 }

mplsLcFrCtrlMaxDlci 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."
   ::= { mplsLcFrIfConfEntry 4 }

mplsLcFrIfConfRowStatus 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
        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
        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)."
   ::= { mplsLcFrIfConfEntry 5 }

 mplsLcFrIfConfStoreType 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."
   ::= { mplsLcFrIfConfEntry 6 }

-- End of mplsLcFrIfConfTable

-- Module compliance.

mplsLcFrCompliances
   OBJECT IDENTIFIER ::= { mplsLcFrConformance 1 }

mplsLcFrGroups



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   OBJECT IDENTIFIER ::= { mplsLcFrConformance 2 }

mplsLcFrModuleCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
       "Compliance statement for agents that support
        MPLS LC-FR Interfaces."

   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 {
         mplsLcFrIfGroup
      }

      -- mplsLcFrIfConfTable

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

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

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

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

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

      OBJECT      mplsLcFrIfConfStoreType
      MIN-ACCESS  read-only
      DESCRIPTION
          "Write access is not required."
   ::= { mplsLcFrCompliances 1 }




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-- Units of conformance.

mplsLcFrIfGroup OBJECT-GROUP
   OBJECTS {
        mplsLcFrTrafficMinDlci,
        mplsLcFrTrafficMaxDlci,
        mplsLcFrCtrlMinDlci,
        mplsLcFrCtrlMaxDlci,
        mplsLcFrIfConfRowStatus,
        mplsLcFrIfConfStoreType
    }
   STATUS  current

   DESCRIPTION
          "Collection of objects needed for MPLS LC-FR
           interface configuration."
   ::= { mplsLcFrGroups 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 MplsLcAtmIfConfTable and mplsLcFrIfConfTable 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



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   MAX-ACCESS other than not-accessible" may be considered sensitive or
   vulnerable in some network environments.  It is thus important to
   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 MplsLcAtmIfConfTable and mplsLcFrIfConfTable 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

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

   [RFC2515]     Tesink, K., et al., "Definitions of Managed Objects
                 for ATM Management", RFC 2515, February 1999.

   [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,



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                 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.

   [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
                 3031, January 2001.

   [RFC3291]     Daniele, M., Haberman, B., Routhier., S.,
                 Schoenwaelder., J., "Textual Conventions
                 for Internet Network Addresses", RFC3291,
                 May 2002.

   [RFC3411]     Harrington, D., Presuhn, R., and B. Wijnen, "An
                 Architecture for Describing Simple Network Management
                 Protocol (SNMP) Management Frameworks", RFC 3411,
                 December 2002.

   [TEMIB]       Srinivasan, C., Viswanathan, A. and Nadeau, T., "MPLS
                 Traffic Engineering Management Information Base ",
                 Internet Draft <draft-ietf-mpls-te-mib-09.txt>,
                 November 2002.

   [LSRMIB]      Srinivasan, C., Viswanathan, A. and T.
                 Nadeau, "MPLS Multiprotocol Label Switching
                 (MPLS) Label Switch Router Management
                 Information Base ", Internet Draft <draft-
                 ietf-mpls-lsr-mib-14.txt>, November 2003.

   [TCMIB]       Nadeau, T., Cucchiara, J., Srinivasan, C.,
                 Viswanathan, A., Sjostrand, H. and K. Kompella,
                 "Definition of Textual Conventions and OBJECT-
                 IDENTITIES for Multi-Protocol Label Switching (MPLS)
                 Management", Internet Draft <draft-ietf-mpls-tc-mib-
                 06.txt>, April 2003.

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

9.2 Informative References



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   [RFC2026]     S. Bradner, "The Internet Standards Process --
                 Revision 3", RFC 2026, October 1996.

   [RFC3413]     Levi, D., Meyer, P., Stewart, B.,
                 "SNMP Applications", RFC 3413, December 2002.

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


10.  Authors' Addresses

  Thomas D. Nadeau
  Cisco Systems, Inc.
  300 Beaver Brook Road
  Boxboro, MA 01719
  Phone: +1-978-936-1470
  Email: tnadeau@cisco.com

  Subrahmanya Hegde
  Cisco Systems, Inc.
  225 East Tazman Drive
  Phone: +1-408-525-6562
  Email: subrah@cisco.com


11.   Full Copyright Statement

   Copyright (C) The Internet Society (2001).  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



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

12.  Intellectual Property Notice

   The IETF takes no position regarding the validity or scope of any
   intellectual property 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; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in BCP-11 [RFC2028].
   Copies of claims of rights made available for publication 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 implementors or users of this
   specification can be obtained from the IETF Secretariat.
   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 practice
   this standard.  Please address the information to the IETF Executive
   Director.

13.  IANA Considerations

   As described in [MPLSMGMT] and as requested in the MPLS-TC-STD-MIB
   [MPLSTCMIB], 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-MIB

   The IANA is requested to assign { mplsStdMIB 6 } to the
   MPLS-LC-ATM-MIB module specified in this document.

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

   The IANA is requested to assign { mplsStdMIB 7 } to the
   MPLS-LC-FR-MIB module specified in this document.







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