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Versions: 00 01

Network Working Group                                  Thomas D. Nadeau
Internet Draft                                      Cisco Systems, Inc.
Expires: July 2002
                                                      Cheenu Srinivasan
                                                  Parama Networks, Inc.

                                                          Adrian Farrel
                                                   Movaz Networks, Inc.

                                                               Tim Hall
                                                        Edward Harrison
                                                   Data Connection Ltd.

                                                           January 2002


   Generalized Multiprotocol Label Switching (GMPLS) Label
                 Management Information Base

          draft-nadeau-ccamp-gmpls-label-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
   [RFC2026].

   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.


Abstract

   This memo defines an experimental portion of the
   Management Information Base (MIB) for use with network
   management protocols in the Internet community.  In
   particular, it describes managed objects defining label



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   for Multiprotocol Label Switching (MPLS) [RFC3031] and
   Generalized Multiprotocol Label Switching (GMPLS)
   [GMPLSArch] Label Switching Routers (LSRs).



Table of Contents

  1. Changes and Pending Work ..................................  2
   1.1. Changes Since the Last Version .........................  2
   1.2. Pending Work ...........................................  2
  2. Introduction ..............................................  3
  3. The SNMP Management Framework .............................  3
  4. Brief Description of MIB Objects ..........................  4
   4.1. gmplsLabelTable ........................................  4
    4.1.1 Concatenated Labels ..................................  5
  5. GMPLS Label MIB Definitions ...............................  5
  6. Security Considerations ................................... 17
  7. Acknowledgements .......................................... 18
  8. References ................................................ 18
   8.1. Normative References ................................... 19
   8.2. Informational References ............................... 20
  9. Authors' Addresses ........................................ 22
  10. Full Copyright Statement ................................. 23



1. Changes and Pending Work

   This section must be removed before the draft progresses
   to RFC.


1.1.  Changes Since the Last Version

   Aligned with the other GMPLS MIBs.  References updated.


1.2.  Pending Work

   The following work items have been identified for this
   version of the draft to be addressed in a future version.

   -  Clarify which objects can be modified when row-status
      and admin-status are set to active.

   -  Expand conformance statements to give one for
      monitoring only, and one for monitoring and control.

   -  Provide examples.



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   -  Provide objects for tables to support the get-next-
      index operation for all arbitrary indexes.


2. 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 modeling and managing labels within
   Generalized MPLS systems.  For an introduction to the
   concepts of GMPLS, see [GMPLSArch].  Note that this
   portion of the MIB is optional within a managed GMPLS
   system.  In particular, if the labels used within the
   system are 'simple' labels that may be encoded within a
   32 bit quantity, and if the encoding of the labels is
   implicit from the context within which they are used,
   then the table defined within this MIB is not required.
   Refer to the other MIB definitions ([GMPLSTEMIB] and
   [GMPLSLSRMIB]) for further details.

   Comments should be made directly to the CCAMP mailing
   list at ccamp@ops.ietf.org.

   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. The SNMP Management Framework

   The SNMP Management Framework presently consists of five
   major components:

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

   -  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 STD 16,
      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].

   -  Message protocols for transferring management



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      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].

   -  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].

   -  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.


4. Brief Description of MIB Objects

   The tables support both manually configured and signaled
   tunnels as described in [TBD].


4.1.  gmplsLabelTable




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   The gmplsLabelTable allows Generalized Labels to be
   defined and managed in a central location.  Generalized
   Labels can be of variable length and have distinct bit-by-
   bit interpretations according to the use that is made of
   them.

   It is useful to configure and inspect Generalized Labels
   using the sub-fields of the labels - and this table makes
   that feature possible.  At the same time, some labels may
   be of unknown construction and must be exposed as octet
   strings.  Similarly, some implementations may choose not
   to expose the construction of some or all labels, and can
   show them as octet strings.

   It is possible that some implementations will choose to
   construct and fully populate this table with all valid
   labels at start of day.  Other implementations may choose
   to create entries on-demand.  This table is indexed using
   an arbitrary index value that is not related to the label
   value in use.  This means that it is possible to create
   two row entries with the same label values.  This may be
   convenient when creating table entries on-demand.


4.1.1 Concatenated Labels

   In some environments such as TDM, it is useful to be able
   to build a single GMPLS label from a concatenation of sub-
   labels.  This facilitates, for example, concatenation of
   timeslots to support a data flow.

   This concatenation is achieved through a secondary index
   into the Label Table.


5. GMPLS Label MIB Definitions

GMPLS-LABEL-MIB DEFINITIONS ::= BEGIN

IMPORTS
   MODULE-IDENTITY, OBJECT-TYPE, Integer32, Unsigned32
      FROM SNMPv2-SMI
   MODULE-COMPLIANCE, OBJECT-GROUP
      FROM SNMPv2-CONF
   RowStatus, StorageType
      FROM SNMPv2-TC
   MplsLabel
      FROM MPLS-TC-MIB
   gmplsMIB, GmplsGeneralizedLabelTypes,
   GmplsGeneralizedLabelSubtypes, GmplsFreeformLabel



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      FROM GMPLS-TC-MIB
   ;

gmplsLabelMIB MODULE-IDENTITY
   LAST-UPDATED
   "200201251200Z"  -- 25 Jan 2002 12:00:00 GMT""
   ORGANIZATION
       "Common Control And Management Protocols
        (CCAMP) 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

               Cheenu Srinivasan
       Postal: Parama Networks, Inc.
               1030 Broad Street
               Shrewsbury, NJ 07702
          Tel: +1-732-544-9120 x731
        Email: cheenu@paramanet.comTel:
        +1-732-544-9120x731

               Adrian Farrel
       Postal: Movaz Networks, Inc.
               7926 Jones Branch Drive
               McLean, VA 22102
          Tel: +1-703-847-1986
        Email: afarrel@movaz.com

               Edward Harrison
       Postal: Data Connection Ltd.
               100 Church Street
               Enfield, Middlesex
               EN2 6BQ, United Kingdom
          Tel: +44-20-8366-1177
        Email: eph@dataconnection.com

               Tim Hall
       Postal: Data Connection Ltd.
               100 Church Street
               Enfield, Middlesex
               EN2 6BQ, United Kingdom
          Tel: +44-20-8366-1177
        Email: timhall@dataconnection.com
       Email comments to the CCAMP WG Mailing List
        at ccamp@ops.ietf.org."
   DESCRIPTION



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       "This MIB module contains managed object
        definitions of labels within GMPLS
        systems."

   -- Revision history.

   REVISION
       "200111111100Z"  -- 11 Nov 2001 11:00:00 GMT
   DESCRIPTION
       "Initial version."
   REVISION
       "200201251200Z"  -- 25 Jan 2002 12:00:00 GMT
   DESCRIPTION
       "Revision for compilation and work in
        progress."
   ::= { gmplsMIB 3 }

-- Top level components of this MIB.

-- tables, scalars
gmplsLabelObjects
   OBJECT IDENTIFIER ::= { gmplsLabelMIB 1 }
gmplsLabelConformance
   OBJECT IDENTIFIER ::= { gmplsLabelMIB 2 }

-- GMPLS Label Table.

gmplsLabelTable OBJECT-TYPE
   SYNTAX        SEQUENCE OF GmplsLabelEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "Table of GMPLS Labels.  Each entry in this
        table represents an individual GMPLS label
        value.  Labels in the tables in other MIBs
        are referred to using index entries into
        this table.  In effect, the table provides
        an integer mapping for label values that
        may be more complex than simple integers."
   ::= { gmplsLabelObjects 1 }

gmplsLabelEntry OBJECT-TYPE
   SYNTAX        GmplsLabelEntry
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "An entry in this table defines a GMPLS
        label."
   INDEX { gmplsLabelIndex, gmplsSublabelIndex }
   ::= { gmplsLabelTable 1 }



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GmplsLabelEntry ::= SEQUENCE {
     gmplsLabelIndex          Unsigned32,
     gmplsSublabelIndex       Unsigned32,
     gmplsLabelRowStatus      RowStatus,
     gmplsLabelStorageType    StorageType,
     gmplsLabelType           GmplsGeneralizedLabelTypes,
     gmplsLabelSubtype        GmplsGeneralizedLabelSubtypes,
     gmplsMplsLabel           MplsLabel,
     gmplsPortWavelengthLabel Unsigned32,
     gmplsFreeformLength      Integer32,
     gmplsFreeformLabel       GmplsFreeformLabel,
     gmplsSonetSdhSignalIndex Integer32,
     gmplsSdhVc               Integer32,
     gmplsSdhVcBranch         Integer32,
     gmplsSonetSdhBranch      Integer32,
     gmplsSonetSdhGroupBranch Integer32,
     gmplsWavebandId          Unsigned32,
     gmplsWavebandStartLabel  Unsigned32,
     gmplsWavebandEndLabel    Unsigned32
   }

gmplsLabelIndex OBJECT-TYPE
   SYNTAX        Unsigned32 (1..4294967295)
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "Uniquely identifies this label.  In
        conjunction with gmplsSublabelIndex this
        uniquely identifies a row."
   ::= { gmplsLabelEntry 1 }

gmplsSublabelIndex OBJECT-TYPE
   SYNTAX        Unsigned32 (1..4294967295)
   MAX-ACCESS    not-accessible
   STATUS        current
   DESCRIPTION
       "In conjunction with gmplsLabelIndex
        uniquely identifies this row.  This sub-
        index allows a single GMPLS label to be
        defined as a concatenation of labels.  This
        is particularly useful in TDM.  The
        ordering of sub-labels is strict with the
        sub-label with lowest gmplsSublabelIndex
        appearing first.  Note that all sub-labels
        of a single GMPLS label must share the same
        gmplsLabelIndex value.  For labels that are
        not composed of concatenated sub-labels,
        this value should be set to zero."
   ::= { gmplsLabelEntry 2 }



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gmplsLabelRowStatus OBJECT-TYPE
   SYNTAX        RowStatus
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable is used to create, modify,
        and/or delete a row in this table."
   ::= { gmplsLabelEntry 3 }

gmplsLabelStorageType OBJECT-TYPE
   SYNTAX        StorageType
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "This variable indicates the storage type
        for this table entry.  When set to
        'permanent', the entire row is to be
        stored."
   ::= { gmplsLabelEntry 4 }

gmplsLabelType OBJECT-TYPE
   SYNTAX        GmplsGeneralizedLabelTypes
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "Identifies the type of this label as it
        appears in a Generalized Label."
   ::= { gmplsLabelEntry 5 }

gmplsLabelSubtype OBJECT-TYPE
   SYNTAX        GmplsGeneralizedLabelSubtypes
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "Subtype to help determine which of the
        subsequent fields should be used to form
        the Generalized Label."
   ::= { gmplsLabelEntry 6 }

gmplsMplsLabel OBJECT-TYPE
   SYNTAX        MplsLabel
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The value of a conventional MPLS label when
        carried as a Generalized Label.  Only valid
        if gmplsLabelType is set to mplsLabel(1),
        and gmplsLabelSubtype is set to
        mplsLabel(1)."



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   ::= { gmplsLabelEntry 7 }

gmplsPortWavelengthLabel OBJECT-TYPE
   SYNTAX        Unsigned32
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The value of a Port or Wavelength Label
        when carried as a Generalized Label.  Only
        valid if gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to portWavelengthLabel(2)."
   ::= { gmplsLabelEntry 8 }

gmplsFreeformLength OBJECT-TYPE
   SYNTAX        Integer32 (1..64)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The length of a freeform Generalized Label
        indicated in the gmplsFreeformLabel object.
        Only valid if gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to freeformGeneralizedLabel(3)."
   ::= { gmplsLabelEntry 9 }

gmplsFreeformLabel OBJECT-TYPE
   SYNTAX        GmplsFreeformLabel
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The value of a freeform Generalized Label
        that does not conform to one of the
        standardized label encoding or that an
        implementation chooses to represent as an
        octet string without further decoding.  The
        length of this object is given by the value
        of gmplsFreeformLength.  Only valid if
        gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to freeformGeneralizedLabel(3)."
   ::= { gmplsLabelEntry 10 }

gmplsSonetSdhSignalIndex OBJECT-TYPE
   SYNTAX        Integer32 (0..4095)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The Signal Index value (S) of a Sonet or
        SDH Generalized Label.  0 indicates that



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        this field is non-significant.  Only valid
        if gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to sonetLabel(4) or sdhLabel(5)."
   ::= { gmplsLabelEntry 11 }

gmplsSdhVc OBJECT-TYPE
   SYNTAX        Integer32 (0..15)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The VC Indicator (U) of an SDH Generalized
        Label.  0 indicates that this field is non-
        significant.  Only valid if gmplsLabelType
        is set to generalizedLabel(2), and
        gmplsLabelSubtype is set to sdhLabel(5)."
   ::= { gmplsLabelEntry 12 }

gmplsSdhVcBranch OBJECT-TYPE
   SYNTAX        Integer32 (0..15)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The VC Branch Indicator (K) of an SDH
        Generalized Label.  0 indicates that this
        field is non-significant.  Only valid if
        gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to sdhLabel(5)."
   ::= { gmplsLabelEntry 13 }

gmplsSonetSdhBranch OBJECT-TYPE
   SYNTAX        Integer32 (0..15)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The Branch Indicator (L) of a Sonet or SDH
        Generalized Label.  0 indicates that this
        field is non-significant.  Only valid if
        gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to sonetLabel(4) or SdhLabel(5)."
   ::= { gmplsLabelEntry 14 }

gmplsSonetSdhGroupBranch OBJECT-TYPE
   SYNTAX        Integer32 (0..15)
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The Group Branch Indicator (M) of a Sonet



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        or SDH Generalized Label.  0 indicates that
        this field is non-significant.  Only valid
        if gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to sonetLabel(4) or sdhLabel(5)."
   ::= { gmplsLabelEntry 15 }

gmplsWavebandId OBJECT-TYPE
   SYNTAX        Unsigned32
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The waveband identifier component of a
        waveband label.  Only valid if
        gmplsLabelType is set to
        generalizedLabel(2), and gmplsLabelSubtype
        is set to wavebandLabel(6)."
   ::= { gmplsLabelEntry 16 }

gmplsWavebandStartLabel OBJECT-TYPE
   SYNTAX        Unsigned32
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The starting label component of a waveband
        label.  Only valid if gmplsLabelType is set
        to generalizedLabel(2), and
        gmplsLabelSubtype is set to
        wavebandLabel(6)."
   ::= { gmplsLabelEntry 17 }

gmplsWavebandEndLabel OBJECT-TYPE
   SYNTAX        Unsigned32
   MAX-ACCESS    read-create
   STATUS        current
   DESCRIPTION
       "The end label component of a waveband
        label.  Only valid if gmplsLabelType is set
        to generalizedLabel(2), and
        gmplsLabelSubtype is set to
        wavebandLabel(6)."
   ::= { gmplsLabelEntry 18 }

-- End of GMPLS Label Table

-- Module compliance.

gmplsLabelGroups
   OBJECT IDENTIFIER ::= { gmplsLabelConformance 1 }




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gmplsLabelCompliances
   OBJECT IDENTIFIER ::= { gmplsLabelConformance 2 }

gmplsLabelModuleCompliance MODULE-COMPLIANCE
   STATUS current
   DESCRIPTION
          "Compliance  statement for  agents  that
           support the GMPLS Label MIB."

MODULE -- this module

   -- The mandatory groups have to be implemented by
   -- LSRs claiming support for this MIB. This MIB itself,
   -- however, is mandatory only on LSRs supporting GMPLS

   MANDATORY-GROUPS {
      gmplsLabelTableGroup
   }


   -- Units of conformance.

   GROUP gmplsLabelTableGroup
   DESCRIPTION
       "This group is mandatory for devices which
        support the gmplsLabelTable."

   GROUP gmplsMPLSLabelGroup
   DESCRIPTION
       "This group extends gmplsLabelTableGroup for
        implementations that support conventional
        MPLS labels."

   GROUP gmplsPortWavelengthLabelGroup
   DESCRIPTION
       "This group extends gmplsLabelTableGroup for
        implementations that support port and
        wavelength labels."

   GROUP gmplsFreeformLabelGroup
   DESCRIPTION
       "This group extends gmplsLabelTableGroup for
        implementations that support freeform
        labels."

   GROUP gmplsSonetSdhLabelGroup
   DESCRIPTION
       "This group extends gmplsLabelTableGroup for
        implementations that support SonetSdh
        labels."



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   GROUP gmplsWavebandLabelGroup
   DESCRIPTION
          "This group extends gmplsLabelTableGroup
           for    implementations   that   support
           Waveband labels."

   -- gmplsLabelTable

   OBJECT      gmplsLabelRowStatus
   SYNTAX      INTEGER {
      active(1),
      notInService(2),
      createAndGo(4),
      destroy(6)
   }
   MIN-ACCESS  read-only
   DESCRIPTION
       "The notReady(3) and createAndWait(5) states
        need not be supported. Write access is not
        required."

   OBJECT      gmplsLabelStorageType
   SYNTAX      INTEGER { other(1) }
   MIN-ACCESS  read-only
   DESCRIPTION
       "Only other (1) needs to be supported."

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

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

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

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

   OBJECT      gmplsFreeformLength
   MIN-ACCESS  read-only



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   DESCRIPTION
       "Write access is not required."

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

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

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

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

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

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

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

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

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

::= { gmplsLabelCompliances 1 }




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-- Units of conformance.

gmplsLabelTableGroup OBJECT-GROUP
   OBJECTS {
      gmplsLabelRowStatus,
      gmplsLabelStorageType,
      gmplsLabelType,
      gmplsLabelSubtype
   }
   STATUS  current
   DESCRIPTION
       "Necessary, but not sufficient, set of
        objects to implement label table support.
        In addition, depending on the type of
        labels supported (for example, wavelength
        labels), the following other groups defined
        below are mandatory: gmplsMPLSLabelGroup
        and/or gmplsPortWavelengthLabelGroup and/or
        gmplsFreeformLabelGroup and/or
        gmplsSonetSdhLabelGroup."
   ::= { gmplsLabelGroups 1 }

gmplsMPLSLabelGroup OBJECT-GROUP
   OBJECTS {
      gmplsMplsLabel
   }
   STATUS  current
   DESCRIPTION
       "Object needed to implement MPLS labels."
   ::= { gmplsLabelGroups 2 }

gmplsPortWavelengthLabelGroup OBJECT-GROUP
   OBJECTS {
      gmplsPortWavelengthLabel
   }
   STATUS  current
   DESCRIPTION
       "Object needed to implement Port and
        Wavelength labels."
   ::= { gmplsLabelGroups 3 }

gmplsFreeformLabelGroup OBJECT-GROUP
   OBJECTS {
      gmplsFreeformLength,
      gmplsFreeformLabel
   }
   STATUS  current
   DESCRIPTION
       "Object needed to implement Freeform
        labels."



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   ::= { gmplsLabelGroups 4 }

gmplsSonetSdhLabelGroup OBJECT-GROUP
   OBJECTS {
      gmplsSonetSdhSignalIndex,
      gmplsSdhVc,
      gmplsSdhVcBranch,
      gmplsSonetSdhBranch,
      gmplsSonetSdhGroupBranch
   }
   STATUS  current
   DESCRIPTION
       "Object needed to implement SONET and SDH
        labels."
   ::= { gmplsLabelGroups 5 }

gmplsWavebandLabelGroup OBJECT-GROUP
   OBJECTS {
      gmplsWavebandId,
      gmplsWavebandStartLabel,
      gmplsWavebandEndLabel
   }
   STATUS  current
   DESCRIPTION
       "Object needed to implement Waveband
        labels."
   ::= { gmplsLabelGroups 6 }

END


6. 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 information that may be sensitive from a
   business perspective, in that they represent a customer's
   interface to the GMPLS network.  Allowing uncontrolled
   access to these objects could result in malicious and
   unwanted disruptions of network traffic or incorrect
   configurations for these customers.  There are no objects
   that are particularly sensitive in their own right, such
   as passwords or monetary amounts.



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   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.

   At this writing, no security holes have been identified
   beyond those that SNMP Security [RFC2571] is itself
   intended to address.  These relate to primarily
   controlled access to sensitive information and the
   ability to configure a device - or which might result
   from operator error, which is beyond the scope of any
   security architecture.

   SNMPv1 or SNMPv2 are by themselves not a secure
   environment. Even if the network itself is secure (for
   example by using IPSec [IPSEC]), 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
   [RFC2574] and the View-based Access Control [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.

   There are a number of managed objects in this MIB that
   may contain information that may be sensitive from a
   business perspective, in that they represent a customer's
   interface to the GMPLS network. Allowing uncontrolled
   access to these objects could result in malicious and
   unwanted disruptions of network traffic or incorrect
   configurations for these customers. There are no objects
   that are particularly sensitive in their own right, such
   as passwords or monetary amounts.


7. Acknowledgements

   The authors would like to express their thanks to Dan
   Joyle for his careful review and comments on GMPLS
   labels.


8. References



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8.1.  Normative References

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

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

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

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

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

   [GMPLSArch]   Ashwood-Smith, P., Awduche, D., Banerjee,
                 A., Basak, D, Berger, L., Bernstein, G.,
                 Drake, J., Fan, Y., Fedyk, D., Grammel, D.,
                 Kompella, K., Kullberg, A., Lang, J., Liaw,
                 F., Papadimitriou, D., Pendarakis, D.,
                 Rajagopalan, B., Rekhter, Y., Saha, D.,
                 Sandick, H., Sharma, V., Swallow, G., Tang,
                 Z., Yu, J., Zinin, A., Nadeau, T., Mannie,
                 E., Generalized Multiprotocol Label
                 Switching (GMPLS) Architecture, Internet
                 Draft <draft-many-gmpls-architecture-
                 01.txt>, March 2001, work in progress.

   [GMPLSSig]    Ashwood-Smith, P., Awduche, D., Banerjee,
                 A., Basak, D, Berger, L., Bernstein, G.,
                 Drake, J., Fan, Y., Fedyk, D., Grammel, D.,
                 Kompella, K., Kullberg, A., Lang,
                 Rajagopalan, B., Rekhter, Y., Saha, D.,
                 Sharma, V., Swallow, G., Bo Tang, Z.,
                 Generalized MPLS - Signaling Functional
                 Description, <draft-ietf-mpls-generalized-
                 signaling-04.txt>, May 2001, work in
                 progress.

   [GMPLSCRLDP]  Ashwood-Smith, P., Awduche, D., Banerjee,
                 A., Basak, D, Berger, L., Bernstein, G.,
                 Drake, J., Fan, Y., Fedyk, D., Grammel, D.,



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                 Kompella, K., Kullberg, A., Lang,
                 Rajagopalan, B., Rekhter, Y., Saha, D.,
                 Sharma, V., Swallow, G., Bo Tang, Z.,
                 Generalized MPLS Signaling - CR-LDP
                 Extensions, Internet Draft <draft-ietf-mpls-
                 generalized-cr-ldp-03.txt>, May 2001, work
                 in progress.

   [GMPLSRSVPTE] Ashwood-Smith, P., Awduche, D., Banerjee,
                 A., Basak, D, Berger, L., Bernstein, G.,
                 Drake, J., Fan, Y., Fedyk, D., Grammel, D.,
                 Kompella, K., Kullberg, A., Lang,
                 Rajagopalan, B., Rekhter, Y., Saha, D.,
                 Sharma, V., Swallow, G., Bo Tang, Z.,
                 Generalized MPLS Signaling - RSVP-TE
                 Extensions, Internet Draft <draft-ietf-mpls-
                 generalized-rsvp-te-03.txt>, May 2001, work
                 in progress.

   [GMPLSSonetSDH]  Mannie, E., Ansorge, S., Ashwood-Smith,
                 P., Banerjee, A., Berger, L., Bernstein,
                 G., Chiu, A., Drake, J., Fan, Y., Fontana,
                 M., Grammel, G., Heiles, J., Katukam, S.,
                 Kompella, K., Lang, J. P., Liaw, F., Lin,
                 Z., Mack-Crane, B., Papadimitriou, D.,
                 Pendarakis, D., Raftelis, M., Rajagopalan,
                 B., Rekhter, Y., Saha, D., Sharma, V.,
                 Swallow, G., Bo Tang, Z., Varma, E.,
                 Vissers, M., Xu, Y., GMPLS Extensions for
                 SONET and SDH Control, Internet Draft
                 <draft-ietf-ccamp-gmpls-sonet-sdh-00.txt>,
                 May 2001, work in progress.

   [TCMIB]       Nadeau, T., Cucchiara, J., Srinivasan, C,
                 Viswanathan, A. and H. Sjostrand,
                 "Definition of Textual Conventions and
                 OBJECT-IDENTITIES for Multiprotocol Label
                 Switching (MPLS) Management", Internet
                 Draft <draft-ietf-mpls-tc-mib-03.txt>,
                 January 2002, work in progress.


8.2.  Informational References

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

   [RFC1215]     M. Rose, "A Convention for Defining Traps



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                 for use with the SNMP", RFC 1215, March
                 1991.

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

   [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.

   [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.

   [RFC2514]     Noto, et. al., "Definitions of Textual
                 Conventions and OBJECT-IDENTITIES for ATM
                 Management", RFC 2514, Feb. 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.

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

   [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.

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

   [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.




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   [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.

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

   [RFC3031]     Rosen, E., Viswanathan, A., and R. Callon,
                 "Multiprotocol Label Switching
                 Architecture", RFC 3031, August 1999.

   [RFC3032]     Rosen, E., Rekhter, Y., Tappan, D.,
                 Farinacci, D., Federokow, G., Li, T., and
                 A. Conta, "MPLS Label Stack Encoding", RFC
                 3032, January 2001.

   [Assigned]    Reynolds, J., and J. Postel, "Assigned
                 Numbers", RFC 1700, October 1994. See also:
                 http://www.isi.edu/in-
                 notes/iana/assignments/smi-numbers.


9. Authors' Addresses

  Thomas D. Nadeau
  Cisco Systems, Inc.
  300 Apollo Drive
  Chelmsford, MA 01824
  Phone: +1-978-244-3051
  Email: tnadeau@cisco.com

  Cheenu Srinivasan
  Parama Networks, Inc.
  1030 Broad Street
  Shrewsbury, NJ 07702
  Phone: +1-732-544-9120 x731
  Email: cheenu@paramanet.com

  Adrian Farrel
  Movaz Networks, Inc.
  7926 Jones Branch Drive, Suite 615
  McLean VA, 22102USA
  Phone: +1-703-847-9847
  Email: afarrel@movaz.com

  Tim Hall



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  Data Connection Ltd.
  100 Church Street
  Enfield, Middlesex
  EN2 6BQ, UK
  Phone: +44 20 8366 1177
  Email: timhall@dataconnection.com

  Edward Harrison
  Data Connection Ltd.
  100 Church Street
  Enfield, Middlesex
  EN2 6BQ, UK
  Phone: +44 20 8366 1177
  Email: eph@dataconnection.com


10.   Full Copyright Statement

   Copyright (C) The Internet Society (2002). 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.






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