[Docs] [txt|pdf] [draft-ietf-mpls-t...] [Diff1] [Diff2]

PROPOSED STANDARD

Network Working Group                                           M. Dubuc
Request for Comments: 4220                                    Consultant
Category: Standards Track                                      T. Nadeau
                                                           Cisco Systems
                                                                 J. Lang
                                                             Sonos, Inc.
                                                           November 2005


          Traffic Engineering Link Management Information Base

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2005).

Abstract

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   In particular, it describes managed objects for modeling TE links as
   described in the Link Bundling in MPLS Traffic Engineering (TE)
   document.





















Dubuc, et al.               Standards Track                     [Page 1]

RFC 4220                MPLS TE Link MIB Module            November 2005


Table of Contents

   1. The Internet-Standard Management Framework ......................2
   2. Introduction ....................................................3
   3. Terminology .....................................................3
   4. Feature Checklist ...............................................4
   5. Outline .........................................................4
   6. Brief Description of MIB Objects ................................4
      6.1. teLinkTable ................................................4
      6.2. teLinkDescriptorTable ......................................4
      6.3. teLinkSrlgTable ............................................5
      6.4. teLinkBandwidthTable .......................................5
      6.5. componentLinkTable .........................................5
      6.6. componentLinkDescriptorTable ...............................5
      6.7. componentLinkBandwidthTable ................................5
   7. Example of Bundled Link Setup ...................................5
   8. Application of the Interfaces Group to TE Links .................9
      8.1. Support of the TE Link Layer by ifTable ....................9
      8.2. Using ifStackTable ........................................11
      8.3. Applicability of ifRcvAddressTable ........................13
   9. TE Link MIB Module Definitions .................................13
   10. Security Considerations .......................................50
   11. Contributors ..................................................51
   12. Acknowledgements ..............................................51
   13. IANA Considerations ...........................................51
       13.1. IANA Considerations for the TE-LINK-STD-MIB .............51
   14. References ....................................................51
       14.1. Normative References ....................................51
       14.2. Informative References ..................................52

1.  The Internet-Standard 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].







Dubuc, et al.               Standards Track                     [Page 2]

RFC 4220                MPLS TE Link MIB Module            November 2005


2.  Introduction

   OSPF [RFC3630], Generalized MPLS (GMPLS) [RFC3471], and the Link
   Management Protocol (LMP) [RFC4204] use the concept of traffic
   engineering (TE) links to abstract link properties.  The effect of
   this approach is a reduction in the amount of routing information
   exchanged in the network, which improves routing scalability.  In
   addition, the use of TE links allows the implementation of new
   capabilities such as link protection.

   In this document, we present a MIB module that can be used to manage
   TE links and their extension, the bundled link.  This MIB module
   enables both the configuration and the performance monitoring of TE
   links and the bundled link.

   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 [RFC2119].

3.  Terminology

   This document uses terminology from the documents describing link
   bundling [RFC4201] and GMPLS [RFC3945].

   The link bundling feature is designed to aggregate one or more
   similar entities between a node pair into a bundled link [RFC4201].
   In RFC 4201, those entities are referred to as TE links.  A TE link
   is a subinterface capable of carrying MPLS traffic engineered
   traffic.  A TE Link may be comprised of only one underlying component
   link.  In cases where more than one component links are to be
   combined, multiple component links should be created with differing
   priorities to indicate hot-standby or parallel utilization.

   A bundled link is another kind of Traffic Engineering (TE) link (see
   [RFC4203]).  A link bundle is a subinterface that binds the traffic
   of a group of one or more TE links.  There should be more than one TE
   Link in a link bundle, but this is not a requirement.  Furthermore,
   if there are more than one TE links in a link bundle at some time,
   and at some point later, all but one of the links are deleted, the
   agent may choose to either delete the link bundle, or it may choose
   to leave it intact.  Traffic counters on a link bundle are cumulative
   for all subinterfaces that it binds together.









Dubuc, et al.               Standards Track                     [Page 3]

RFC 4220                MPLS TE Link MIB Module            November 2005


4.  Feature Checklist

   The TE Link MIB module (TE-LINK-STD-MIB) is designed to satisfy the
   following requirements and constraints:

   -  The MIB module supports the management of TE links, including
      bundled links.

   -  Support is provided for configuration of traffic engineering
      parameters associated with TE links.

   -  The MIB module is used to monitor the priority-based component
      link and TE link bandwidth values.

5.  Outline

   Configuring bundled links involves the following steps:

   -  Creating a bundled link.

   -  Creating TE links.

   -  Optionally specifying the shared risk link groups associated with
      the TE links.

   -  Configuring the component links including the bandwidth parameters
      and associating the component links with the appropriate TE link.

   -  Associating the TE links with the appropriate bundled link.

6.  Brief Description of MIB Objects

   Sections 6.1 - 6.4 describe objects pertaining to TE links while
   Sections 6.5 - 6.7 describe objects pertaining to component links.
   The MIB objects were derived from the link bundling document
   [RFC4201].

6.1.  teLinkTable

   This table represents the TE links, including bundled links, and
   their generic traffic engineering parameters.

6.2.  teLinkDescriptorTable

   This table represents the TE link interface switching capability
   descriptors.





Dubuc, et al.               Standards Track                     [Page 4]

RFC 4220                MPLS TE Link MIB Module            November 2005


6.3.  teLinkSrlgTable

   This table represents the shared risk link groups (SRLGs) associated
   with TE links.

6.4.  teLinkBandwidthTable

   This table specifies the priority-based bandwidth traffic engineering
   parameters associated with TE links.

6.5.  componentLinkTable

   This table enumerates the component links and their generic traffic
   engineering parameters.

6.6.  componentLinkDescriptorTable

   This table enumerates the interface switching capability descriptors
   that each component link supports.

6.7.  componentLinkBandwidthTable

   The component link bandwidth table specifies the priority-based
   bandwidth values associated with the component links.

   Component links that belong to the same TE link must be compatible.
   If these two tables are managed independently, mechanisms should be
   put in place to ensure consistency between the two tables.  TE links
   that form a bundled link must have compatible traffic engineering
   parameters (resource class, link metric, and protection type).

   The link descriptors of the teLinkDescriptorTable can be derived from
   the link descriptors of the componentLinkDescrTable.

   Some of the bandwidth parameters of the teLinkTable,
   teLinkDescriptorTable, teLinkBandwidthTable are derived from the
   bandwidth parameters of the componentLinkTable,
   componentLinkDescriptorTable, and componentLinkBandwidthTable
   (maximum reservable bandwidth, minimum LSP bandwidth, maximum LSP
   bandwidth at specified priority, and unreserved bandwidth).

7.  Example of Bundled Link Setup

   In this section, we provide a brief example of using the MIB objects
   described in section 10 to set up a bundled link.  While this example
   is not meant to illustrate every nuance of the MIB module, it is
   intended as an aid to understanding some of the key concepts.  It is
   meant to be read after going through the MIB module itself.  Section



Dubuc, et al.               Standards Track                     [Page 5]

RFC 4220                MPLS TE Link MIB Module            November 2005


   8.2 provides more details on the use of the ifStackTable to establish
   relationships between bundled links, TE links, and component links.

   Suppose that one would like to manually create a bundled link out of
   two 1:1 TE links, as depicted in the figure in Section 8.2.  Assume
   that the bundled link is associated with SRLGs 10 and 50.  Finally,
   let the component links be port entity interfaces (lambdas).  The
   following example illustrates which rows and corresponding objects
   might be created to accomplish this.

   First, a bundled link entry is created.  An ifEntry with the same
   ifIndex and with ifType teLink needs to be created beforehand.

      In teLinkTable:
      {
         ifIndex                        = 2,
         teLinkAddressType              = unknown(0),
         teLinkLocalIpAddr              = ''H,
         teLinkRemoteIpAddr             = ''H,
         teLinkMetric                   = 5,
         teLinkProtectionType           = dedicated1For1(4),
         teLinkWorkingPriority          = 7,
         teLinkResourceClass            = 3,
         teLinkIncomingIfId             = 0,
         teLinkOutgoingIfId             = 2,
         teLinkRowStatus                = createAndGo(4),
         teLinkStorageType              = nonVolatile(3)
      }

      In ifStackTable:
      {
         ifStackHigherLayer             = 0,
         ifStackLowerLayer              = 2,
         ifStackStatus                  = createAndGo(4)
      }

   Next, the two TE links are created.

      In teLinkTable:
      {
         ifIndex                        = 3,
         teLinkAddressType              = unknown(0),
         teLinkLocalIpAddr              = ''H,
         teLinkRemoteIpAddr             = ''H,
         teLinkMetric                   = 5,
         teLinkProtectionType           = unprotected(2),
         teLinkWorkingPriority          = 7,
         teLinkResourceClass            = 3,



Dubuc, et al.               Standards Track                     [Page 6]

RFC 4220                MPLS TE Link MIB Module            November 2005


         teLinkIncomingIfId             = 0,
         teLinkOutgoingIfId             = 3,
         teLinkRowStatus                = createAndGo(4),
         teLinkStorageType              = nonVolatile(3)
      }

      In ifStackTable:
      {
         ifStackHigherLayer             = 2,
         ifStackLowerLayer              = 3,
         ifStackStatus                  = createAndGo(4)
      }

      In teLinkTable:
      {
         ifIndex                        = 4,
         teLinkAddressType              = unknown(0),
         teLinkLocalIpAddr              = ''H,
         teLinkRemoteIpAddr             = ''H,
         teLinkMetric                   = 5,
         teLinkProtectionType           = unprotected(2),
         teLinkWorkingPriority          = 7,
         teLinkResourceClass            = 3,
         teLinkIncomingIfId             = 0,
         teLinkOutgoingIfId             = 4,
         teLinkRowStatus                = createAndGo(4),
         teLinkStorageType              = nonVolatile(3)
      }

      In ifStackTable:
      {
         ifStackHigherLayer             = 2,
         ifStackLowerLayer              = 4,
         ifStackStatus                  = createAndGo(4)
      }

   We assign SRLGs to the TE links.

      In the teLinkSrlgTable:
      {
         ifIndex                        = 3,
         teLinkSrlg                     = 10,
         teLinkSrlgRowStatus            = createAndGo(4),
         teLinkSrlgStorageType          = nonVolatile(3)
      }

      In the teLinkSrlgTable:
      {



Dubuc, et al.               Standards Track                     [Page 7]

RFC 4220                MPLS TE Link MIB Module            November 2005


         ifIndex                        = 4,
         teLinkSrlg                     = 50,
         teLinkSrlgRowStatus            = createAndGo(4),
         teLinkSrlgStorageType          = nonVolatile(3)
      }

   The bundled link inherits the SRLG properties from the associated TE
   links.

   Next, for each unbundled TE link, a component link is created.  An
   ifEntry with the same ifIndex needs to be created beforehand.

      In componentLinkTable:
      {
         ifIndex                          = 5,
         componentLinkPreferredProtection = primary(1),
         componentLinkRowStatus           = createAndGo(4),
         componentLinkStorageType         = nonVolatile(3)
      }

      In ifStackTable:
      {
         ifStackHigherLayer             = 3,
         ifStackLowerLayer              = 5,
         ifStackStatus                  = createAndGo(4)
      }

      In componentLinkTable:
      {
         ifIndex                          = 6,
         componentLinkPreferredProtection = secondary(2),
         componentLinkRowStatus           = createAndGo(4)
         componentLinkStorageType         = nonVolatile(3)
      }

      In ifStackTable:
      {
         ifStackHigherLayer             = 4,
         ifStackLowerLayer              = 6,
         ifStackStatus                  = createAndGo(4)
      }

   In this example, once a component link is added to the
   componentLinkTable, the associated link descriptors are implicitly
   added to the componentLinkDescriptorTable.

   TE link link descriptors are derived from their component link
   descriptors.



Dubuc, et al.               Standards Track                     [Page 8]

RFC 4220                MPLS TE Link MIB Module            November 2005


   Note that the bandwidth attributes in teLinkDescriptorTable,
   componentLinkDescriptorTable, teLinkBandwidthTable, and
   componentLinkBandwidthTable are maintained by the device according to
   LSP creation/deletion at different priorities.  The values in the
   teLinkBandwidthTable are an aggregation of the values for the
   component links of the TE links and the TE links of the bundled link.

8.  Application of the Interfaces Group to TE Links

   The Interfaces Group [RFC2863] defines generic managed objects for
   managing interfaces.  This memo contains the media-specific
   extensions to the Interfaces Group for managing TE Link interfaces as
   logical interfaces.

   This memo assumes the interpretation of the Interfaces Group to be in
   accordance with [RFC2863], which states that the interfaces table
   (ifTable) contains information on the managed resource's interfaces
   and that each sub-layer below the internetwork layer of a network
   interface is considered an interface.  Thus, the TE Link interface is
   represented as an entry in the ifTable.  The interrelation of entries
   in the ifTable is defined by Interfaces Stack Group, as defined in
   [RFC2863].

   When using TE Link interfaces, the interface stack table might appear
   as follows:

      +----------------------------------------+
      | TE link-interface ifType = teLink(200) +
      +----------------------------------------+
      | Underlying Layer...                    +
      +----------------------------------------+

   In the above diagram, "Underlying Layer..." refers to the ifIndex of
   any interface type, which has been defined for TE Link interworking.
   Examples include ATM, Frame Relay, Ethernet, etc.

8.1.  Support of the TE Link Layer by ifTable

   Some specific interpretations of ifTable for the TE Link layer
   follow.

   Object        Use for the TE Link layer

   ifIndex       Each TE Link interface is represented by an ifEntry.

   ifDescr       Description of the TE Link interface.





Dubuc, et al.               Standards Track                     [Page 9]

RFC 4220                MPLS TE Link MIB Module            November 2005


   ifType        The value that is allocated for TE Link is 200
                 [IANAifType].

   ifSpeed       The total bandwidth in bits per second for use by the
                 TE Link layer.

   ifPhysAddress Unused.

   ifAdminStatus This variable indicates the administrator's intent as
                 to whether TE Link should be enabled, disabled, or
                 running in some diagnostic testing mode on this
                 interface.  Also see [RFC2863].

   ifOperStatus  This value reflects the actual or operational status of
                 the TE Link on this interface.

   ifLastChange  See [RFC2863].

   ifInOctets    The number of received octets over the interface, i.e.,
                 the number of received octets in all component links
                 associated with the interface.

   ifOutOctets   The number of transmitted octets over the interface,
                 i.e., the number of octets transmitted over all
                 component links associated with the interface.

   ifInErrors    The number of packets dropped due to uncorrectable
                 errors.

   ifInUnknownProtos
                 The number of received packets discarded during packet
                 header validation.

   ifOutErrors   See [RFC2863].

   ifName        Textual name (unique on this system) of the interface,
                 or an octet string of zero length.

   ifLinkUpDownTrapEnable
                 Default is disabled (2).

   ifConnectorPresent
                 Set to false (2).

   ifHighSpeed   See [RFC2863].






Dubuc, et al.               Standards Track                    [Page 10]

RFC 4220                MPLS TE Link MIB Module            November 2005


   ifHCInOctets  The 64-bit version of ifInOctets; supported if required
                 by the compliance statements in [RFC2863].

   ifHCOutOctets The 64-bit version of ifOutOctets; supported if
                 required by the compliance statements in [RFC2863].

   ifAlias       The non-volatile 'alias' name for the interface, as
                 specified by a network manager.

   ifCounterDiscontinuityTime
                 See [RFC2863].

   Support for ifInOctets, ifOutOctets, ifInErrors, ifInUnknownProtos,
   ifOutErrors, ifHCInOctets, and ifHCOutOctets objects is not required
   if the encoding type is clear.  For other encoding types, traffic
   counters on a TE link are cumulative for all subinterfaces that it
   binds together.

8.2.  Using ifStackTable

   This section describes, by example, how to use the ifStackTable to
   represent the relationship of TE links with underlying TE-enabled
   interfaces.  Implementors of the stack table for TE link interfaces
   should look at the appropriate RFC for the service being stacked on
   TE links.  The examples given below are for illustration purposes
   only.

      Example: MPLS is being carried on a bundled TE link.  The bundled
               TE link represents a 1:1 optical transport interface.

   In this example, the component link is a TE link.  The two component
   links/TE links are grouped in a bundled link.

   +-------------------------------------------------------------------+
   | MPLS interface ifType = mpls(166)                                 |
   | ifIndex = 1                                                       |
   +-------------------------------------------------------------------+
   | TE link (bundled link) ifType = teLink(200)                       |
   | ifIndex = 2                                                       |
   +--------------------------------+-+--------------------------------+
   | TE link ifType = teLink(200)   | | TE link ifType = teLink(200)   |
   | ifIndex = 3                    | | ifIndex = 4                    |
   +--------------------------------+ +--------------------------------+
   | Component link                 | | Component link                 |
   | ifType = opticalTransport(196) | | ifType = opticalTransport(196) |
   | ifIndex = 5                    | | ifIndex = 6                    |
   +--------------------------------+ +--------------------------------+




Dubuc, et al.               Standards Track                    [Page 11]

RFC 4220                MPLS TE Link MIB Module            November 2005


   The assignment of the index values could, for example, be:

            ifIndex  Description
            1        mpls             (type 166)
            2        teLink           (type 200)
            3        teLink           (type 200)
            4        teLink           (type 200)
            5        opticalTransport (type 196)
            6        opticalTransport (type 196)

   The ifStackTable is then used to show the relationships between the
   various interfaces.

            ifStackTable Entries

            HigherLayer   LowerLayer
            0             1
            1             2
            2             3
            2             4
            3             5
            4             6
            5             0
            6             0

   In the case where MPLS is using a single TE link, then the upper TE
   link layer (link bundle) is not required.

      +-----------------------------------+
      | MPLS interface ifType = mpls(166) |
      +-----------------------------------+
      | TE link ifType = teLink(200)      |
      +-----------------------------------+
      | Component link                    |
      | ifType = opticalTransport(196)    |
      +-----------------------------------+

   The assignment of the index values could for example be:

            ifIndex  Description
            1        mpls             (type 166)
            2        teLink           (type 200)
            3        opticalTransport (type 196)








Dubuc, et al.               Standards Track                    [Page 12]

RFC 4220                MPLS TE Link MIB Module            November 2005


   The ifStackTable is then used to show the relationships between the
   various interfaces.

            ifStackTable Entries

            HigherLayer   LowerLayer
            0             1
            1             2
            2             3
            3             0

8.3.  Applicability of ifRcvAddressTable

   TE link interfaces are logical interfaces with no media-level
   addresses.  As such, the ifRcvAddressTable is not applicable to these
   interfaces.

9.  TE Link MIB Module Definitions

   TE-LINK-STD-MIB DEFINITIONS ::= BEGIN

   IMPORTS
      MODULE-IDENTITY, OBJECT-TYPE, transmission, Integer32, Unsigned32
         FROM SNMPv2-SMI

      MODULE-COMPLIANCE, OBJECT-GROUP
         FROM SNMPv2-CONF

      TEXTUAL-CONVENTION, RowStatus, StorageType
         FROM SNMPv2-TC

      InterfaceIndexOrZero, ifIndex
         FROM IF-MIB

      InetAddressType, InetAddress
         FROM INET-ADDRESS-MIB;


   teLinkStdMIB MODULE-IDENTITY
      LAST-UPDATED "200510110000Z"  -- 11 October 2005
      ORGANIZATION "Multiprotocol Label Switching (MPLS) Working Group"
      CONTACT-INFO
          "        Martin Dubuc
           Email:  mdubuc@ncf.ca

                   Thomas D. Nadeau
           Email:  tnadeau@cisco.com




Dubuc, et al.               Standards Track                    [Page 13]

RFC 4220                MPLS TE Link MIB Module            November 2005


                   Jonathan P. Lang
           Email:  jplang@ieee.org

           Comments about this document should be emailed directly to
           the MPLS working group mailing list at mpls@uu.net."

      DESCRIPTION
          "Copyright (C) 2005 The Internet Society.  This version of
           this MIB module is part of RFC 4220; see the RFC
           itself for full legal notices.

           This MIB module contains managed object definitions for
           MPLS traffic engineering links as defined in
           'Link Bundling in MPLS Traffic Engineering (TE)'."

      -- Revision history.
      REVISION
          "200510110000Z"  -- 11 October 2005
      DESCRIPTION
          "Initial version published as RFC 4220."
      ::= { transmission 200 }

   -- Textual Conventions

   TeLinkBandwidth ::= TEXTUAL-CONVENTION
      STATUS       current
      DESCRIPTION
          "This type is used to represent link bandwidth in bps.  This
           value is represented using a 4 octet IEEE floating point
           format [IEEE].  The floating point representation is not
           used to represent fractional value but rather to allow
           specification of large numbers that cannot be expressed
           with 32-bit integers."
      REFERENCE
          "IEEE Standard for Binary Floating-Point Arithmetic,
           Standard 754-1985"
      SYNTAX       OCTET STRING (SIZE(4))

   TeLinkPriority ::= TEXTUAL-CONVENTION
      DISPLAY-HINT "d"
      STATUS       current
      DESCRIPTION
          "This type is used to represent a priority.  Each connection
           is assigned a priority.  This priority is used when
           accounting for bandwidth on TE links or component
           links, for resource allocation and for rerouting purposes.
           Value 0 is the highest priority.  Value 7 is the lowest
           priority."



Dubuc, et al.               Standards Track                    [Page 14]

RFC 4220                MPLS TE Link MIB Module            November 2005


      SYNTAX       Unsigned32 (0..7)

   TeLinkProtection ::= TEXTUAL-CONVENTION
      STATUS       current
      DESCRIPTION
          "Link protection."
      SYNTAX       INTEGER {
                       primary(1),
                       secondary(2)
                   }

   TeLinkSwitchingCapability ::= TEXTUAL-CONVENTION
      STATUS       current
      DESCRIPTION
          "Switching capability as specified in the 'OSPF Extensions in
           Support of Generalized Multi-Protocol Label Switching
           (GMPLS)' document.  The values specified in this document
           are not contiguous."
      SYNTAX       INTEGER {
                       packetSwitch1(1),
                       packetSwitch2(2),
                       packetSwitch3(3),
                       packetSwitch4(4),
                       layer2Switch(51),
                       tdm(100),
                       lambdaSwitch(150),
                       fiberSwitch(200)
                   }

   TeLinkEncodingType ::= TEXTUAL-CONVENTION
      STATUS       current
      DESCRIPTION
          "Link encoding type as specified in 'Generalized
           Multi-Protocol Label Switching (GMPLS) Signaling
           Functional Description' document.  The values
           specified in this document are not contiguous."
      SYNTAX       INTEGER {
                       packet(1),
                       ethernet(2),
                       ansiEtsiPdh(3),
                       sdhItuSonetAnsi(5),
                       digitalWrapper(7),
                       lambda(8),
                       fiber(9),
                       fiberChannel(11)
                   }

   TeLinkSonetSdhIndication ::= TEXTUAL-CONVENTION



Dubuc, et al.               Standards Track                    [Page 15]

RFC 4220                MPLS TE Link MIB Module            November 2005


      STATUS       current
      DESCRIPTION
          "This convention is used to indicate whether the interface
           supports Standard or Arbitrary SONET/SDH.  To simplify the
           mapping process, the values used in this textual convention
           match the values specified in the interface switching
           capability specific information field, i.e., 0 for Standard
           SONET/SDH and 1 for Arbitrary SONET/SDH."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      SYNTAX       INTEGER {
                       standard(0),
                       arbitrary(1)
                   }

   -- Top level components of this MIB module

   -- Notifications
   teLinkNotifications OBJECT IDENTIFIER ::= { teLinkStdMIB 0 }
   -- Tables, Scalars
   teLinkObjects       OBJECT IDENTIFIER ::= { teLinkStdMIB 1 }
   -- Conformance
   teLinkConformance   OBJECT IDENTIFIER ::= { teLinkStdMIB 2 }

   -- TE Link Table

   teLinkTable OBJECT-TYPE
      SYNTAX        SEQUENCE OF TeLinkEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This table specifies the grouping of component links into
           TE links and the grouping of TE links into bundled links."
      ::= { teLinkObjects 1 }

   teLinkEntry OBJECT-TYPE
      SYNTAX        TeLinkEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "An entry in this table exists for each ifEntry with an
           ifType of teLink(200), i.e., for every TE link.  An ifEntry
           in the ifTable must exist before a teLinkEntry is created
           with the corresponding ifIndex.  If a TE link entry in the
           ifTable is destroyed, then so is the corresponding entry
           in the teLinkTable.  The administrative and operational
           status values are controlled from the ifEntry."



Dubuc, et al.               Standards Track                    [Page 16]

RFC 4220                MPLS TE Link MIB Module            November 2005


      INDEX         { ifIndex }
      ::= { teLinkTable 1 }

   TeLinkEntry ::= SEQUENCE {
     teLinkAddressType                 InetAddressType,
     teLinkLocalIpAddr                 InetAddress,
     teLinkRemoteIpAddr                InetAddress,
     teLinkMetric                      Unsigned32,
     teLinkMaximumReservableBandwidth  TeLinkBandwidth,
     teLinkProtectionType              INTEGER,
     teLinkWorkingPriority             TeLinkPriority,
     teLinkResourceClass               Unsigned32,
     teLinkIncomingIfId                Integer32,
     teLinkOutgoingIfId                InterfaceIndexOrZero,
     teLinkRowStatus                   RowStatus,
     teLinkStorageType                 StorageType
   }

   teLinkAddressType OBJECT-TYPE
      SYNTAX        InetAddressType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The type of Internet address for the TE link."
      ::= { teLinkEntry 1 }

   teLinkLocalIpAddr OBJECT-TYPE
      SYNTAX        InetAddress
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The local Internet address for numbered links.  The type of
           this address is determined by the value of the
           teLinkAddressType object.

           For IPv4 and IPv6 numbered links, this object represents the
           local IP address associated with the TE link.  For an
           unnumbered link, the local address is of type unknown, this
           object is set to the zero length string, and the
           teLinkOutgoingIfId object then identifies the unnumbered
           address.

           If the TE link is a Forwarding Adjacency (FA), the local
           IP address is set to the head-end address of the FA-LSP.

           If ipAddrTable is implemented, this object must have the
           same value as the ipAdEntAddr object that belongs to the
           row in ipAddrTable where ipAdEntIfIndex is equal to



Dubuc, et al.               Standards Track                    [Page 17]

RFC 4220                MPLS TE Link MIB Module            November 2005


           ifIndex."
      ::= { teLinkEntry 2 }

   teLinkRemoteIpAddr OBJECT-TYPE
      SYNTAX        InetAddress
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The remote Internet address for numbered links.  The type of
           this address is determined by the value of the
           teLinkAddressType object.

           The remote IP address associated with the TE link (IPv4 and
           IPv6 numbered links).  For an unnumbered link, the remote
           address is of type unknown, this object is set to the
           zero length string, and the teLinkIncomingIfId object then
           identifies the unnumbered address.

           If the TE link is a Forwarding Adjacency, the remote IP
           address is set to the tail-end address of the FA-LSP."
      ::= { teLinkEntry 3 }

   teLinkMetric OBJECT-TYPE
      SYNTAX        Unsigned32
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The traffic engineering metric for the TE link is
           derived from its component links.  All component links
           within the TE link must have the same traffic
           engineering metric."
      REFERENCE
          "Link Bundling in MPLS Traffic Engineering (TE), RFC 4201"
      ::= { teLinkEntry 4 }

   teLinkMaximumReservableBandwidth OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-only
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum reservable bandwidth on
           the TE link.  This is the union of the maximum reservable
           bandwidth of all the component links within the
           TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"



Dubuc, et al.               Standards Track                    [Page 18]

RFC 4220                MPLS TE Link MIB Module            November 2005


      ::= { teLinkEntry 5 }

   teLinkProtectionType OBJECT-TYPE
      SYNTAX        INTEGER {
                        extraTraffic(1),
                        unprotected(2),
                        shared(3),
                        dedicated1For1(4),
                        dedicated1Plus1(5),
                        enhanced(6)
                    }
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the link protection type of the
           TE link.  Descriptions of the different protection types can
           be found in the 'Routing Extensions in Support of
           Generalized Multi-Protocol Label Switching (GMPLS)'
           document."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203 and
           Routing Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4202"
      ::= { teLinkEntry 6 }

   teLinkWorkingPriority OBJECT-TYPE
      SYNTAX        TeLinkPriority
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This object represents a priority value such that a new
           connection with a higher priority, i.e., numerically lower
           than this value, is guaranteed to be setup on a primary
           link and not on a secondary link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkEntry 7 }

   teLinkResourceClass OBJECT-TYPE
      SYNTAX        Unsigned32
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the TE link resource class.
           The resource class is a 32 bit bitfield.  The resource class
           for a link bundle is derived from the resource class of its



Dubuc, et al.               Standards Track                    [Page 19]

RFC 4220                MPLS TE Link MIB Module            November 2005


           TE links.  All TE links within a link bundle must have the
           same resource class.  Encoding of the resource class is
           described in the 'Traffic Engineering (TE) Extensions to
           OSPF Version 2' document."
      REFERENCE
          "Link Bundling in MPLS Traffic Engineering (TE), RFC 4201
           and Traffic Engineering (TE) Extensions to OSPF Version 2,
           RFC 3630"
      ::= { teLinkEntry 8 }

   teLinkIncomingIfId OBJECT-TYPE
      SYNTAX        Integer32 (0..2147483647)
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "For unnumbered links, the incoming interface is set to the
           outgoing interface identifier chosen by the neighboring LSR
           for the reverse link corresponding to this TE link.  If the
           link is numbered, the value of this object is 0 and the
           address is stored in the teLinkRemoteIpAddr instead."
      REFERENCE
          "Link Bundling in MPLS Traffic Engineering (TE), RFC 4201"
      ::= { teLinkEntry 9 }

   teLinkOutgoingIfId OBJECT-TYPE
      SYNTAX        InterfaceIndexOrZero
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "If the link is unnumbered, the outgoing interface identifier
           is set to the outgoing interface identifier chosen for the
           TE link by the advertising LSR.  If the link is numbered, the
           value of this object is 0 and the address is stored in the
           teLinkLocalIpAddr instead."
      REFERENCE
          "Link Bundling in MPLS Traffic Engineering (TE), RFC 4201"
      ::= { teLinkEntry 10 }

   teLinkRowStatus 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.  None of the writable objects in
           a row can be changed if status is active(1)."
      ::= { teLinkEntry 11 }




Dubuc, et al.               Standards Track                    [Page 20]

RFC 4220                MPLS TE Link MIB Module            November 2005


   teLinkStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the
           teLinkTable.  Conceptual rows having the value
           'permanent' need not allow write-access to any
           columnar object in the row."
      ::= { teLinkEntry 12 }

   -- End of teLinkTable


   -- TE Link Descriptor Table

   teLinkDescriptorTable OBJECT-TYPE
      SYNTAX        SEQUENCE OF TeLinkDescriptorEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This table specifies the interface switching capability
           descriptors associated with the TE links."
      ::= { teLinkObjects 2 }

   teLinkDescriptorEntry OBJECT-TYPE
      SYNTAX        TeLinkDescriptorEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "An entry in this table is created for every TE link interface
           switching capability descriptor.  An ifEntry in the ifTable
           must exist before a teLinkDescriptorEntry using the same
           ifIndex is created.  ifType of ifEntry must be teLink(200).
           If a TE link entry in the ifTable is destroyed, then so are
           all of the entries in the teLinkDescriptorTable that use the
           ifIndex of this TE link."
      INDEX         { ifIndex, teLinkDescriptorId }
      ::= { teLinkDescriptorTable 1 }

   TeLinkDescriptorEntry ::= SEQUENCE {
     teLinkDescriptorId               Unsigned32,
     teLinkDescrSwitchingCapability   TeLinkSwitchingCapability,
     teLinkDescrEncodingType          TeLinkEncodingType,
     teLinkDescrMinLspBandwidth       TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio0  TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio1  TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio2  TeLinkBandwidth,



Dubuc, et al.               Standards Track                    [Page 21]

RFC 4220                MPLS TE Link MIB Module            November 2005


     teLinkDescrMaxLspBandwidthPrio3  TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio4  TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio5  TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio6  TeLinkBandwidth,
     teLinkDescrMaxLspBandwidthPrio7  TeLinkBandwidth,
     teLinkDescrInterfaceMtu          Unsigned32,
     teLinkDescrIndication            TeLinkSonetSdhIndication,
     teLinkDescrRowStatus             RowStatus,
     teLinkDescrStorageType           StorageType
   }

   teLinkDescriptorId OBJECT-TYPE
      SYNTAX        Unsigned32 (1..4294967295)
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This object specifies the link descriptor identifier."
      ::= { teLinkDescriptorEntry 1 }

   teLinkDescrSwitchingCapability OBJECT-TYPE
      SYNTAX        TeLinkSwitchingCapability
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies interface switching capability of
           the TE link, which is derived from its component links."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 2 }

   teLinkDescrEncodingType OBJECT-TYPE
      SYNTAX        TeLinkEncodingType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the TE link encoding type."
      REFERENCE
          "Generalized Multi-Protocol Label Switching (GMPLS)
           Signaling Functional Description, RFC 3471"
      ::= { teLinkDescriptorEntry 3 }

   teLinkDescrMinLspBandwidth OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION



Dubuc, et al.               Standards Track                    [Page 22]

RFC 4220                MPLS TE Link MIB Module            November 2005


          "This attribute specifies the minimum LSP bandwidth on
           the TE link.  This is derived from the union of the
           minimum LSP bandwidth of all the component links
           associated with the TE link that can be used to carry
           live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 4 }

   teLinkDescrMaxLspBandwidthPrio0 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 0 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 0 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 5 }

   teLinkDescrMaxLspBandwidthPrio1 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 1 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 1 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 6 }

   teLinkDescrMaxLspBandwidthPrio2 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 2 on the TE link.  This is the union of the maximum



Dubuc, et al.               Standards Track                    [Page 23]

RFC 4220                MPLS TE Link MIB Module            November 2005


           LSP bandwidth at priority 2 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 7 }

   teLinkDescrMaxLspBandwidthPrio3 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 3 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 3 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 8 }

   teLinkDescrMaxLspBandwidthPrio4 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 4 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 4 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 9 }

   teLinkDescrMaxLspBandwidthPrio5 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 5 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 5 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE



Dubuc, et al.               Standards Track                    [Page 24]

RFC 4220                MPLS TE Link MIB Module            November 2005


          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 10 }

   teLinkDescrMaxLspBandwidthPrio6 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 6 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 6 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 11 }

   teLinkDescrMaxLspBandwidthPrio7 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 7 on the TE link.  This is the union of the maximum
           LSP bandwidth at priority 7 of all the component links within
           the TE link that can be used to carry live traffic."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 12 }

   teLinkDescrInterfaceMtu OBJECT-TYPE
      SYNTAX        Unsigned32 (1..65535)
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the interface MTU for the TE
           link descriptor."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 13 }

   teLinkDescrIndication OBJECT-TYPE
      SYNTAX        TeLinkSonetSdhIndication



Dubuc, et al.               Standards Track                    [Page 25]

RFC 4220                MPLS TE Link MIB Module            November 2005


      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies whether this interface supports
           Standard or Arbitrary SONET/SDH."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkDescriptorEntry 14 }

   teLinkDescrRowStatus 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.  No read-create object
           can be changed if teLinkDescrRowStatus is in the active(1)
           state."
      ::= { teLinkDescriptorEntry 15 }

   teLinkDescrStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the
           teLinkDescriptorTable.  Conceptual rows having the value
           'permanent' need not allow write-access to any
           columnar object in the row."
      ::= { teLinkDescriptorEntry 16 }

   -- End of teLinkDescriptorTable


   -- TE Link Shared Risk Link Group Table

   teLinkSrlgTable OBJECT-TYPE
      SYNTAX        SEQUENCE OF TeLinkSrlgEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This table specifies the SRLGs associated with TE links."
      ::= { teLinkObjects 3 }

   teLinkSrlgEntry OBJECT-TYPE
      SYNTAX        TeLinkSrlgEntry
      MAX-ACCESS    not-accessible



Dubuc, et al.               Standards Track                    [Page 26]

RFC 4220                MPLS TE Link MIB Module            November 2005


      STATUS        current
      DESCRIPTION
          "An entry in this table contains information about an
           SRLG associated with a TE link.
           An ifEntry in the ifTable must exist before a
           teLinkSrlgEntry using the same ifIndex is created.
           The ifType of ifEntry must be teLink(200).
           If a TE link entry in the ifTable is destroyed, then so
           are all of the entries in the teLinkSrlgTable that use the
           ifIndex of this TE link."
      INDEX         { ifIndex, teLinkSrlg }
      ::= { teLinkSrlgTable 1 }

   TeLinkSrlgEntry ::= SEQUENCE {
     teLinkSrlg            Unsigned32,
     teLinkSrlgRowStatus   RowStatus,
     teLinkSrlgStorageType StorageType
   }

   teLinkSrlg OBJECT-TYPE
      SYNTAX        Unsigned32 (0..4294967295)
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This identifies an SRLG supported by the TE link.  An SRLG is
           identified with a 32-bit number that is unique within an IGP
           domain.  Zero is a valid SRLG number."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { teLinkSrlgEntry 1 }

   teLinkSrlgRowStatus 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.  No read-create object can
           be modified if teLinkSrlgRowStatus is active(1)."
      ::= { teLinkSrlgEntry 2 }

   teLinkSrlgStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the



Dubuc, et al.               Standards Track                    [Page 27]

RFC 4220                MPLS TE Link MIB Module            November 2005


           teLinkSrlgTable.  Conceptual rows having the value
           'permanent' need not allow write-access to any
           columnar object in the row."
      ::= { teLinkSrlgEntry 3 }

   -- End of teLinkSrlgTable


   -- TE Link Bandwidth Table

   teLinkBandwidthTable OBJECT-TYPE
      SYNTAX        SEQUENCE OF TeLinkBandwidthEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This table specifies the priority-based bandwidth table
           for TE links."
      ::= { teLinkObjects 4 }

   teLinkBandwidthEntry OBJECT-TYPE
      SYNTAX        TeLinkBandwidthEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "An entry in this table contains information about
           the priority-based bandwidth of TE links.  An ifEntry in the
           ifTable must exist before a teLinkBandwidthEntry using the
           same ifIndex is created.  The ifType of ifEntry must be
           teLink(200).  If a TE link entry in the ifTable is destroyed,
           then so are all of the entries in the teLinkBandwidthTable
           that use the ifIndex of this TE link."
      INDEX         { ifIndex, teLinkBandwidthPriority }
      ::= { teLinkBandwidthTable 1 }

   TeLinkBandwidthEntry ::= SEQUENCE {
     teLinkBandwidthPriority    TeLinkPriority,
     teLinkBandwidthUnreserved  TeLinkBandwidth,
     teLinkBandwidthRowStatus   RowStatus,
     teLinkBandwidthStorageType StorageType
   }

   teLinkBandwidthPriority OBJECT-TYPE
      SYNTAX        TeLinkPriority
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This attribute specifies the priority.  A value of 0 is valid
           as specified in the 'Traffic Engineering (TE) Extensions to



Dubuc, et al.               Standards Track                    [Page 28]

RFC 4220                MPLS TE Link MIB Module            November 2005


           OSPF Version 2' document."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203 and
           Traffic Engineering (TE) Extensions to OSPF Version 2,
           RFC 3630"
      ::= { teLinkBandwidthEntry 1 }

   teLinkBandwidthUnreserved OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-only
      STATUS        current
      DESCRIPTION
          "This attribute specifies the TE link unreserved
           bandwidth at priority p.  It is the sum of the unreserved
           bandwidths at priority p of all component links associated
           with the TE link (excluding all links that are strictly
           used as protecting links)."
      REFERENCE
          "Link Bundling in MPLS Traffic Engineering (TE), RFC 4201"
      ::= { teLinkBandwidthEntry 2 }

   teLinkBandwidthRowStatus 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.  No read-create object
           can be modified when teLinkBandwidthRowStatus is active(1)."
      ::= { teLinkBandwidthEntry 3 }

   teLinkBandwidthStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the
           teLinkBandwidthTable.  Conceptual rows having the value
           'permanent' need not allow write-access to any
           columnar object in the row."
      ::= { teLinkBandwidthEntry 4 }

   -- End of teLinkBandwidthTable


   -- Component Link Table



Dubuc, et al.               Standards Track                    [Page 29]

RFC 4220                MPLS TE Link MIB Module            November 2005


   componentLinkTable  OBJECT-TYPE
      SYNTAX        SEQUENCE OF ComponentLinkEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This table specifies the component link parameters."
      ::= { teLinkObjects 5 }

   componentLinkEntry  OBJECT-TYPE
      SYNTAX        ComponentLinkEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "An entry in this table exists for each ifEntry that
           represents a component link.  An ifEntry must exist in
           the ifTable before a componentLinkEntry is created with
           the corresponding ifIndex.  ifEntry's ifType can be
           of any interface type that has been defined for TE Link
           interworking.  Examples include ATM, Frame Relay, Ethernet,
           etc.  If an entry representing a component link is destroyed
           in the ifTable, then so is the corresponding entry in the
           componentLinkTable.  The administrative and operational
           status values are controlled from the ifEntry."
      INDEX         { ifIndex }
      ::= { componentLinkTable 1 }

   ComponentLinkEntry ::= SEQUENCE {
     componentLinkMaxResBandwidth     TeLinkBandwidth,
     componentLinkPreferredProtection TeLinkProtection,
     componentLinkCurrentProtection   TeLinkProtection,
     componentLinkRowStatus           RowStatus,
     componentLinkStorageType         StorageType
   }

   componentLinkMaxResBandwidth OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum reservable bandwidth on
           the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkEntry 1 }

   componentLinkPreferredProtection OBJECT-TYPE



Dubuc, et al.               Standards Track                    [Page 30]

RFC 4220                MPLS TE Link MIB Module            November 2005


      SYNTAX        TeLinkProtection
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies whether this component link is
           a primary or secondary entity."
      ::= { componentLinkEntry 2 }

   componentLinkCurrentProtection OBJECT-TYPE
      SYNTAX        TeLinkProtection
      MAX-ACCESS    read-only
      STATUS        current
      DESCRIPTION
          "This attribute specifies whether this component link is
           currently used as primary or secondary link."
      ::= { componentLinkEntry 3 }

   componentLinkRowStatus 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.  No read-create object
           can be modified when componentLinkRowStatus is active(1)."
      ::= { componentLinkEntry 4 }

   componentLinkStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the
           componentLinkTable.  Conceptual rows having the value
           'permanent' need not allow write-access to any
           columnar object in the row."
      ::= { componentLinkEntry 5 }

   -- End of componentLinkTable


   -- Component Link Descriptor Table

   componentLinkDescriptorTable OBJECT-TYPE
      SYNTAX        SEQUENCE OF ComponentLinkDescriptorEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION



Dubuc, et al.               Standards Track                    [Page 31]

RFC 4220                MPLS TE Link MIB Module            November 2005


          "This table specifies the interface switching capability
           descriptors associated with the component links."
      ::= { teLinkObjects 6 }

   componentLinkDescriptorEntry OBJECT-TYPE
      SYNTAX        ComponentLinkDescriptorEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "An entry in this table is created for every component link
           descriptor.  An ifEntry in the ifTable must exist before a
           componentLinkDescriptorEntry using the same ifIndex is
           created.  ifEntry's ifType can be of any interface type that
           has been defined for TE Link interworking.  Examples include
           ATM, Frame Relay, Ethernet, etc.  If a component link entry
           in the ifTable is destroyed, then so are all entries in the
           componentLinkDescriptorTable that use the ifIndex of this
           component link."
      INDEX         { ifIndex, componentLinkDescrId }
      ::= { componentLinkDescriptorTable 1 }

   ComponentLinkDescriptorEntry ::= SEQUENCE {
     componentLinkDescrId                    Unsigned32,
     componentLinkDescrSwitchingCapability   TeLinkSwitchingCapability,
     componentLinkDescrEncodingType          TeLinkEncodingType,
     componentLinkDescrMinLspBandwidth       TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio0  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio1  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio2  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio3  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio4  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio5  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio6  TeLinkBandwidth,
     componentLinkDescrMaxLspBandwidthPrio7  TeLinkBandwidth,
     componentLinkDescrInterfaceMtu          Unsigned32,
     componentLinkDescrIndication            TeLinkSonetSdhIndication,
     componentLinkDescrRowStatus             RowStatus,
     componentLinkDescrStorageType           StorageType
   }

   componentLinkDescrId OBJECT-TYPE
      SYNTAX        Unsigned32 (1..4294967295)
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This object specifies the link descriptor identifier."
      ::= { componentLinkDescriptorEntry 1 }




Dubuc, et al.               Standards Track                    [Page 32]

RFC 4220                MPLS TE Link MIB Module            November 2005


   componentLinkDescrSwitchingCapability OBJECT-TYPE
      SYNTAX        TeLinkSwitchingCapability
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies link multiplexing capabilities of
           the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 2 }

   componentLinkDescrEncodingType OBJECT-TYPE
      SYNTAX        TeLinkEncodingType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the component link encoding type."
      REFERENCE
          "Generalized Multi-Protocol Label Switching (GMPLS) Signaling
           Functional Description, RFC 3471"
      ::= { componentLinkDescriptorEntry 3 }

   componentLinkDescrMinLspBandwidth OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the minimum LSP bandwidth on
           the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 4 }

   componentLinkDescrMaxLspBandwidthPrio0 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 0 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 5 }



Dubuc, et al.               Standards Track                    [Page 33]

RFC 4220                MPLS TE Link MIB Module            November 2005


   componentLinkDescrMaxLspBandwidthPrio1 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 1 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 6 }

   componentLinkDescrMaxLspBandwidthPrio2 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 2 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 7 }

   componentLinkDescrMaxLspBandwidthPrio3 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 3 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 8 }

   componentLinkDescrMaxLspBandwidthPrio4 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 4 on the component link."
      REFERENCE



Dubuc, et al.               Standards Track                    [Page 34]

RFC 4220                MPLS TE Link MIB Module            November 2005


          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 9 }

   componentLinkDescrMaxLspBandwidthPrio5 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "thousand bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 5 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 10 }

   componentLinkDescrMaxLspBandwidthPrio6 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 6 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 11 }

   componentLinkDescrMaxLspBandwidthPrio7 OBJECT-TYPE
      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies the maximum LSP bandwidth at
           priority 7 on the component link."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 12 }

   componentLinkDescrInterfaceMtu OBJECT-TYPE
      SYNTAX        Unsigned32 (1..65535)
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION



Dubuc, et al.               Standards Track                    [Page 35]

RFC 4220                MPLS TE Link MIB Module            November 2005


          "This attribute specifies the interface MTU for the component
           link descriptor."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 13 }

   componentLinkDescrIndication OBJECT-TYPE
      SYNTAX        TeLinkSonetSdhIndication
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "This attribute specifies whether this interface supports
           Standard or Arbitrary SONET/SDH."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkDescriptorEntry 14 }

   componentLinkDescrRowStatus 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.  No read-create object
           can be modified when componentLinkDescrRowStatus
           is active(1)."
      ::= { componentLinkDescriptorEntry 15 }

   componentLinkDescrStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the
           componentLinkDescriptorTable.  Conceptual rows
           having the value 'permanent' need not allow write-access
           to any columnar object in the row."
      ::= { componentLinkDescriptorEntry 16 }

   -- End of componentLinkDescriptorTable


   -- Component Link Bandwidth Table

   componentLinkBandwidthTable OBJECT-TYPE
      SYNTAX        SEQUENCE OF ComponentLinkBandwidthEntry



Dubuc, et al.               Standards Track                    [Page 36]

RFC 4220                MPLS TE Link MIB Module            November 2005


      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This table specifies the priority-based bandwidth
           for component links."
      ::= { teLinkObjects 7 }

   componentLinkBandwidthEntry OBJECT-TYPE
      SYNTAX        ComponentLinkBandwidthEntry
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "An entry in this table contains information about
           the priority-based bandwidth on component links.
           An ifEntry in the ifTable must exist before a
           componentLinkBandwidthEntry using the same ifIndex is
           created.  ifEntry's ifType can be of any interface type that
           has been defined for TE Link interworking.  Examples
           include ATM, Frame Relay, Ethernet, etc.  If a component link
           entry in the ifTable is destroyed, then so are all entries
           in the componentLinkBandwidthTable that use the ifIndex of
           this component link."
      INDEX         { ifIndex, componentLinkBandwidthPriority }
      ::= { componentLinkBandwidthTable 1 }

   ComponentLinkBandwidthEntry ::= SEQUENCE {
     componentLinkBandwidthPriority    TeLinkPriority,
     componentLinkBandwidthUnreserved  TeLinkBandwidth,
     componentLinkBandwidthRowStatus   RowStatus,
     componentLinkBandwidthStorageType StorageType
   }

   componentLinkBandwidthPriority OBJECT-TYPE
      SYNTAX        TeLinkPriority
      MAX-ACCESS    not-accessible
      STATUS        current
      DESCRIPTION
          "This attribute specifies the priority.  A value of 0 is valid
           as specified in the 'Traffic Engineering (TE) Extensions to
            OSPF Version 2' document."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203 and
           Traffic Engineering (TE) Extensions to OSPF Version 2,
           RFC 3630"
      ::= { componentLinkBandwidthEntry 1 }

   componentLinkBandwidthUnreserved OBJECT-TYPE



Dubuc, et al.               Standards Track                    [Page 37]

RFC 4220                MPLS TE Link MIB Module            November 2005


      SYNTAX        TeLinkBandwidth
      UNITS         "bps"
      MAX-ACCESS    read-only
      STATUS        current
      DESCRIPTION
          "This attribute specifies the component link unreserved
           bandwidth at priority p."
      REFERENCE
          "OSPF Extensions in Support of Generalized Multi-Protocol
           Label Switching (GMPLS), RFC 4203"
      ::= { componentLinkBandwidthEntry 2 }

   componentLinkBandwidthRowStatus 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.  No read-create object can
           be modified when componentLinkBandwidthRowStatus is
           active(1)."
      ::= { componentLinkBandwidthEntry 3 }

   componentLinkBandwidthStorageType OBJECT-TYPE
      SYNTAX        StorageType
      MAX-ACCESS    read-create
      STATUS        current
      DESCRIPTION
          "The storage type for this conceptual row in the
           componentLinkBandwidthTable.  Conceptual rows
           having the value 'permanent' need not allow write-access
           to any columnar object in the row."
      ::= { componentLinkBandwidthEntry 4 }

   -- End of componentLinkBandwidthTable


   -- Module compliance

   teLinkCompliances
      OBJECT IDENTIFIER ::= { teLinkConformance 1 }

   teLinkGroups
      OBJECT IDENTIFIER ::= { teLinkConformance 2 }

   teLinkModuleFullCompliance MODULE-COMPLIANCE
      STATUS current
      DESCRIPTION



Dubuc, et al.               Standards Track                    [Page 38]

RFC 4220                MPLS TE Link MIB Module            November 2005


          "Compliance statement for agents that support read-create
           so that both configuration and monitoring of TE links can
           be accomplished via this MIB module."
      MODULE -- this module

         MANDATORY-GROUPS    { teLinkGroup,
                               teLinkBandwidthGroup,
                               componentLinkBandwidthGroup }

         GROUP teLinkSrlgGroup
         DESCRIPTION
             "This group is mandatory for GMPLS enabled devices."

         GROUP teLinkPscGroup
         DESCRIPTION
             "This group is mandatory for devices that support the
              packet switching capability."

         GROUP teLinkTdmGroup
         DESCRIPTION
             "This group is mandatory for devices that support the TDM
              switching capability."

         -- teLinkTable

         OBJECT      teLinkAddressType
         SYNTAX      INTEGER { unknown(0), ipv4(1), ipv6(2) }
         DESCRIPTION
             "Only ipv4(1) and ipv6(2) address types need to be
              supported for numbered links.  For unnumbered links, the
              unknown(0) address type needs to be supported."

         OBJECT      teLinkLocalIpAddr
         SYNTAX      InetAddress (SIZE(0|4|16))
         DESCRIPTION
             "Size of TE link IP address depends on type of TE link.
              TE link IP address size is zero if the link is unnumbered,
              four if the link IP address is IPv4, and sixteen if the
              link IP address is IPv6."

         OBJECT      teLinkRemoteIpAddr
         SYNTAX      InetAddress (SIZE(0|4|16))
         DESCRIPTION
             "Size of TE link IP address depends on type of TE link.
              TE link IP address size is zero if the link is unnumbered,
              four if the link IP address is IPv4, and sixteen if the
              link IP address is IPv6."




Dubuc, et al.               Standards Track                    [Page 39]

RFC 4220                MPLS TE Link MIB Module            November 2005


         OBJECT      teLinkRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."

         -- teLinkDescriptorTable

         OBJECT      teLinkDescrRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."

         -- teLinkSrlgTable

         OBJECT      teLinkSrlgRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."

         -- teLinkBandwidthTable

         OBJECT      teLinkBandwidthRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."

         -- componentLinkTable

         OBJECT      componentLinkRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."




Dubuc, et al.               Standards Track                    [Page 40]

RFC 4220                MPLS TE Link MIB Module            November 2005


         -- componentLinkDescriptorTable

         OBJECT      componentLinkDescrRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."

         -- componentLinkBandwidthTable

         OBJECT      componentLinkBandwidthRowStatus
         SYNTAX      RowStatus { active(1), notInService(2) }
         WRITE-SYNTAX RowStatus { active(1), notInService(2),
                                  createAndGo(4), destroy(6) }
         DESCRIPTION
             "Support for notReady(3) and createAndWait(5) is
              not required."

      ::= { teLinkCompliances 1 }

   teLinkModuleReadOnlyCompliance MODULE-COMPLIANCE
      STATUS current
      DESCRIPTION
          "Compliance statement for agents that support the
           monitoring of the TE link MIB module."
      MODULE -- this module

         MANDATORY-GROUPS    { teLinkGroup,
                               teLinkBandwidthGroup,
                               componentLinkBandwidthGroup }

         GROUP teLinkSrlgGroup
         DESCRIPTION
             "This group is mandatory for GMPLS enabled devices."

         GROUP teLinkPscGroup
         DESCRIPTION
             "This group is mandatory for devices that support the
              packet switching capability."

         GROUP teLinkTdmGroup
         DESCRIPTION
             "This group is mandatory for devices that support the TDM
              switching capability."

         -- teLinkTable



Dubuc, et al.               Standards Track                    [Page 41]

RFC 4220                MPLS TE Link MIB Module            November 2005


         OBJECT      teLinkAddressType
         SYNTAX      INTEGER { unknown(0), ipv4(1), ipv6(2) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Only ipv4(1) and ipv6(2) address types need to be
              supported for numbered links.  For unnumbered links, the
              unknown(0) address type needs to be supported."

         OBJECT      teLinkLocalIpAddr
         SYNTAX      InetAddress (SIZE(0|4|16))
         MIN-ACCESS  read-only
         DESCRIPTION
             "Size of TE link IP address depends on type of TE link.
              TE link IP address size is zero if the link is unnumbered,
              four if the link IP address is IPv4, and sixteen if the
              link IP address is IPv6."

         OBJECT      teLinkRemoteIpAddr
         SYNTAX      InetAddress (SIZE(0|4|16))
         MIN-ACCESS  read-only
         DESCRIPTION
             "Size of TE link IP address depends on type of TE link.
              TE link IP address size is zero if the link is unnumbered,
              four if the link IP address is IPv4, and sixteen if the
              link IP address is IPv6."

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

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

         OBJECT      teLinkRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the
              only status that needs to be supported."

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




Dubuc, et al.               Standards Track                    [Page 42]

RFC 4220                MPLS TE Link MIB Module            November 2005


         -- teLinkDescriptorTable

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

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

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

         OBJECT      teLinkDescrMaxLspBandwidthPrio0
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrMaxLspBandwidthPrio1
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrMaxLspBandwidthPrio2
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrMaxLspBandwidthPrio3
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrMaxLspBandwidthPrio4
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrMaxLspBandwidthPrio5
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrMaxLspBandwidthPrio6



Dubuc, et al.               Standards Track                    [Page 43]

RFC 4220                MPLS TE Link MIB Module            November 2005


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

         OBJECT      teLinkDescrMaxLspBandwidthPrio7
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      teLinkDescrRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the
              only status that needs to be supported."

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

         -- teLinkSrlgTable

         OBJECT      teLinkSrlgRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the
              only status that needs to be supported."

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

         -- teLinkBandwidthTable

         OBJECT      teLinkBandwidthRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the
              only status that needs to be supported."

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



Dubuc, et al.               Standards Track                    [Page 44]

RFC 4220                MPLS TE Link MIB Module            November 2005


         -- componentLinkTable

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

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

         OBJECT      componentLinkRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the
              only status that needs to be supported."

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

         -- componentLinkDescriptorTable

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

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

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

         OBJECT      componentLinkDescrMaxLspBandwidthPrio0
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio1
         MIN-ACCESS  read-only



Dubuc, et al.               Standards Track                    [Page 45]

RFC 4220                MPLS TE Link MIB Module            November 2005


         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio2
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio3
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio4
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio5
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio6
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

         OBJECT      componentLinkDescrMaxLspBandwidthPrio7
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required."

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

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

         OBJECT      componentLinkDescrRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the



Dubuc, et al.               Standards Track                    [Page 46]

RFC 4220                MPLS TE Link MIB Module            November 2005


              only status that needs to be supported."

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

         -- componentLinkBandwidthTable

         OBJECT      componentLinkBandwidthRowStatus
         SYNTAX      RowStatus { active(1) }
         MIN-ACCESS  read-only
         DESCRIPTION
             "Write access is not required and active(1) is the
              only status that needs to be supported."

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

      ::= { teLinkCompliances 2 }

   -- Units of conformance

   teLinkGroup OBJECT-GROUP
      OBJECTS { teLinkAddressType,
                teLinkLocalIpAddr,
                teLinkRemoteIpAddr,
                teLinkMetric,
                teLinkProtectionType,
                teLinkWorkingPriority,
                teLinkResourceClass,
                teLinkIncomingIfId,
                teLinkOutgoingIfId,
                teLinkRowStatus,
                teLinkStorageType,
                teLinkDescrSwitchingCapability,
                teLinkDescrEncodingType,
                teLinkDescrRowStatus,
                teLinkDescrStorageType,
                componentLinkPreferredProtection,
                componentLinkCurrentProtection,
                componentLinkRowStatus,
                componentLinkStorageType,
                componentLinkDescrSwitchingCapability,
                componentLinkDescrEncodingType,
                componentLinkDescrRowStatus,



Dubuc, et al.               Standards Track                    [Page 47]

RFC 4220                MPLS TE Link MIB Module            November 2005


                componentLinkDescrStorageType
              }

      STATUS  current
      DESCRIPTION
             "Collection of objects needed for the management of
              resources associated with TE links."
      ::= { teLinkGroups 1 }

   teLinkSrlgGroup OBJECT-GROUP
      OBJECTS { teLinkSrlgRowStatus,
                teLinkSrlgStorageType
              }

      STATUS  current
      DESCRIPTION
             "Collection of objects needed for the management of
              SRLG resources associated with TE links."
      ::= { teLinkGroups 2 }

   teLinkBandwidthGroup OBJECT-GROUP
      OBJECTS { teLinkMaximumReservableBandwidth,
                teLinkDescrMaxLspBandwidthPrio0,
                teLinkDescrMaxLspBandwidthPrio1,
                teLinkDescrMaxLspBandwidthPrio2,
                teLinkDescrMaxLspBandwidthPrio3,
                teLinkDescrMaxLspBandwidthPrio4,
                teLinkDescrMaxLspBandwidthPrio5,
                teLinkDescrMaxLspBandwidthPrio6,
                teLinkDescrMaxLspBandwidthPrio7,
                teLinkBandwidthUnreserved,
                teLinkBandwidthRowStatus,
                teLinkBandwidthStorageType
              }

      STATUS  current
      DESCRIPTION
             "Collection of objects needed for the management of
              the bandwidth resources associated with TE links and
              component links."
      ::= { teLinkGroups 3 }

   componentLinkBandwidthGroup OBJECT-GROUP
      OBJECTS { componentLinkMaxResBandwidth,
                componentLinkDescrMaxLspBandwidthPrio0,
                componentLinkDescrMaxLspBandwidthPrio1,
                componentLinkDescrMaxLspBandwidthPrio2,
                componentLinkDescrMaxLspBandwidthPrio3,



Dubuc, et al.               Standards Track                    [Page 48]

RFC 4220                MPLS TE Link MIB Module            November 2005


                componentLinkDescrMaxLspBandwidthPrio4,
                componentLinkDescrMaxLspBandwidthPrio5,
                componentLinkDescrMaxLspBandwidthPrio6,
                componentLinkDescrMaxLspBandwidthPrio7,
                componentLinkBandwidthUnreserved,
                componentLinkBandwidthRowStatus,
                componentLinkBandwidthStorageType
              }

      STATUS  current
      DESCRIPTION
             "Collection of objects needed for the management of the
              bandwidth parameters associated with component links."
      ::= { teLinkGroups 4 }

   teLinkPscGroup OBJECT-GROUP
      OBJECTS { teLinkDescrMinLspBandwidth,
                teLinkDescrInterfaceMtu,
                componentLinkDescrMinLspBandwidth,
                componentLinkDescrInterfaceMtu
              }

      STATUS  current
      DESCRIPTION
             "Collection of objects needed for devices that are
              packet switch capable."
      ::= { teLinkGroups 5 }

   teLinkTdmGroup OBJECT-GROUP
      OBJECTS { teLinkDescrMinLspBandwidth,
                teLinkDescrIndication,
                componentLinkDescrMinLspBandwidth,
                componentLinkDescrIndication
              }

      STATUS  current
      DESCRIPTION
             "Collection of objects needed for devices that are
              TDM switching capable."
      ::= { teLinkGroups 6 }

   -- End of TE-LINK-STD-MIB
   END








Dubuc, et al.               Standards Track                    [Page 49]

RFC 4220                MPLS TE Link MIB Module            November 2005


10.  Security Considerations

   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:

   -  All the tables in this MIB module have routing information in
      them, so they all have the same security attributes.  Unauthorized
      changes to attributes of these tables can disrupt resource
      allocation in the network.

   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
   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:

   -  IP address entries in the teLinkTable (teLinkLocalIpAddr and
      teLinkRemoteIpAddr) may reveal the internals of a network provider
      IP address space.

   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.






Dubuc, et al.               Standards Track                    [Page 50]

RFC 4220                MPLS TE Link MIB Module            November 2005


11.  Contributors

   Sudheer Dharanikota
   EMail: sudheer@ieee.org

12.  Acknowledgements

   The authors would like to acknowledge the contribution of Dmitry
   Ryumkin.

13.  IANA Considerations

   The following "IANA Considerations" subsection requests IANA for a
   new assignment.  New assignments can only be made via Standards
   Action as specified in [RFC2434].

13.1.  IANA Considerations for the TE-LINK-STD-MIB

   The TE-LINK-STD-MIB should be rooted under the transmission subtree.
   The IANA has assigned { transmission 200 } to the TE-LINK-STD-MIB
   module specified in this document.

14.  References

14.1.  Normative References

   [IANAifType] "IANAifType MIB Module",
                http://www.iana.org/assignments/ianaiftype-mib.

   [IEEE]       IEEE, "IEEE Standard for Binary Floating-Point
                Arithmetic", Standard 754-1985, 1985 (ISBN 1-5593-7653-
                8).

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

   [RFC2434]    Narten, T. and H. Alvestrand, "Guidelines for Writing an
                IANA Considerations Section in RFCs", BCP 26, RFC 2434,
                October 1998.

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

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




Dubuc, et al.               Standards Track                    [Page 51]

RFC 4220                MPLS TE Link MIB Module            November 2005


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

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

   [RFC3471]    Berger, L., "Generalized Multi-Protocol Label Switching
                (GMPLS) Signaling Functional Description", RFC 3471,
                January 2003.

   [RFC3630]    Katz, D., Kompella, K. and D. Yeung, "Traffic
                Engineering (TE) Extensions to OSPF Version 2", RFC
                3630, September 2003.

   [RFC4201]    Kompella, K., Rekhter, Y. and L. Berger, "Link Bundling
                in MPLS Traffic Engineering (TE)", RFC 4201, October
                2005.

   [RFC4202]    Kompella, K., Ed. and Y. Rekhter, Ed., "Routing
                Extensions in Support of Generalized Multi-Protocol
                Label Switching (GMPLS)", RFC 4202, October 2005.

   [RFC4203]    Kompella, K., Ed. and Y. Rekhter, Ed., "OSPF Extensions
                in Support of Generalized Multi-Protocol Label Switching
                (GMPLS)", RFC 4203, October 2005.

   [RFC4206]    Kompella, K. and Y. Rekhter, "Label Switched Paths (LSP)
                Hierarchy with Generalized Multi-Protocol Label
                Switching (GMPLS) Traffic Engineering (TE)", RFC 4206,
                October 2005.

   [RFC4204]    Lang, J., Ed., "Link Management Protocol (LMP)", RFC
                4204, October 2005.

14.2.  Informative References

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

   [RFC3945]    Mannie, E., "Generalized Multi-Protocol Label Switching
                (GMPLS) Architecture", RFC 3945, October 2004.







Dubuc, et al.               Standards Track                    [Page 52]

RFC 4220                MPLS TE Link MIB Module            November 2005


Authors' Addresses

   Martin Dubuc

   EMail: mdubuc@ncf.ca


   Thomas D. Nadeau
   Cisco Systems
   1414 Massachusetts Ave.
   Boxborough, MA 01719

   Phone: +1-978-244-3051
   EMail: tnadeau@cisco.com


   Jonathan P. Lang
   Sonos, Inc.
   223 E. De La Guerra St.
   Santa Barbara, CA 93101

   EMail: jplang@ieee.org





























Dubuc, et al.               Standards Track                    [Page 53]

RFC 4220                MPLS TE Link MIB Module            November 2005


Full Copyright Statement

   Copyright (C) The Internet Society (2005).

   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.

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.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.







Dubuc, et al.               Standards Track                    [Page 54]


Html markup produced by rfcmarkup 1.107, available from http://tools.ietf.org/tools/rfcmarkup/