3476
INFORMATIONAL

Documentation of IANA Assignments for Label Distribution Protocol (LDP), Resource ReSerVation Protocol (RSVP), and Resource ReSerVation Protocol-Traffic Engineering (RSVP-TE) Extensions for Optical UNI Signaling

Authors: B. Rajagopalan
Date: March 2003
Working Group: NON WORKING GROUP
Stream: IETF
Updated by: RFC 3468

Abstract

The Optical Interworking Forum (OIF) has defined extensions to the Label Distribution Protocol (LDP) and the Resource ReSerVation Protocol (RSVP) for optical User Network Interface (UNI) signaling. These extensions consist of a set of new data objects and error codes. This document describes these extensions. This memo provides information for the Internet community.

RFC 3476: Documentation of IANA Assignments for Label Distribution Protocol (LDP), Resource ReSerVation Protocol (RSVP), and Resource ReSerVation Protocol-Traffic Engineering (RSVP-TE) Extensions for Optical UNI Signaling [RFC Home] [TEXT|PDF|HTML] [Tracker] [IPR] [Info page]

INFORMATIONAL
Updated by: 3468
Network Working Group                                     B. Rajagopalan
Request for Comments: 3476                                 Tellium, Inc.
Category: Informational                                       March 2003


   <span class="h1">Documentation of IANA Assignments for Label Distribution Protocol</span>
 <span class="h1">(LDP), Resource ReSerVation Protocol (RSVP), and Resource ReSerVation</span>
           <span class="h1">Protocol-Traffic Engineering (RSVP-TE) Extensions</span>
                      for Optical UNI Signaling

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   The Optical Interworking Forum (OIF) has defined extensions to the
   Label Distribution Protocol (LDP) and the Resource ReSerVation
   Protocol (RSVP) for optical User Network Interface (UNI) signaling.
   These extensions consist of a set of new data objects and error
   codes.  This document describes these extensions.

<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>. Introduction</span>

   The OIF UNI signaling specification is described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].  This
   specification utilizes IETF protocol standards as well as IETF work
   in progress.  Specifically, the following IETF specifications are
   used:

   o  Label distribution protocol (LDP) [<a href="#ref-6" title=""LDP Specification"">6</a>]
   o  Resource reservation protocol (RSVP) [<a href="#ref-5" title=""RSVP Functional Specification"">5</a>]
   o  GMPLS signaling and GMPLS extensions for SONET/SDH [<a href="#ref-4" title=""GMPLS Extensions for SONET and SDH Control"">4</a>]
   o  GMPLS RSVP-TE and CR-LDP extensions [<a href="#ref-2" title=""Generalized Multi-Protocol Label Switching (MPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Extensions"">2</a>, <a href="#ref-3" title=""Generalized Multi- Protocol Label Switching (MPLS) Signaling Constraint-based Routed Label Distribution Protocol (CR-LDP) Extensions"">3</a>]

   The aim of the OIF UNI specification is the maximal re-use of IETF
   protocol definitions.  A few extensions to IETF protocols, however,
   have been defined to serve UNI-specific needs.  These extensions are
   described in this document.







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<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>. LDP Extensions for UNI Signaling</span>

   The LDP extensions for UNI signaling consist of new TLVs that capture
   UNI-specific parameters and new UNI-specific status codes.  The new
   TLVs are Source ID (3 TLVs), Destination ID (3 TLVs), Egress Label,
   Local Connection ID, Diversity, Contract ID, and UNI Service Level
   [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].  These are described below.  The new status codes are assigned
   from the private use space of LDP codes, as described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].  The
   UNI specification [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>] also defines two new LDP messages, Status
   Enquiry and Status Response.  These messages have been obsoleted and
   hence no code points are requested in this document for them.

<span class="h3"><a class="selflink" id="section-2.1" href="#section-2.1">2.1</a>  Source ID TLVs</span>

   Three TLVs have been defined to encode the Source ID. The content and
   usage of these TLVs are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h4"><a class="selflink" id="section-2.1.1" href="#section-2.1.1">2.1.1</a> IPv4 Source ID</span>

    0                    1                         2            3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|Source ID Type (0x0960)    |      Length                   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                      Contents                                 ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

<span class="h4"><a class="selflink" id="section-2.1.2" href="#section-2.1.2">2.1.2</a> IPv6 Source ID</span>

    0                    1                         2            3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|Source ID Type (0x0961)    |      Length                   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                      Contents                                 ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+











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<span class="h4"><a class="selflink" id="section-2.1.3" href="#section-2.1.3">2.1.3</a> NSAP Source ID</span>

    0                    1                         2            3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|Source ID Type (0x0962)    |      Length                   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                      Contents                                 ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

<span class="h3"><a class="selflink" id="section-2.2" href="#section-2.2">2.2</a>  Destination ID TLVs</span>

   Three TLVs have been defined to encode the Destination ID. The
   content and usage of these TLVs are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h4"><a class="selflink" id="section-2.2.1" href="#section-2.2.1">2.2.1</a> IPv4 Destination ID</span>

    0                    1                         2            3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|Dest ID Type (0x0963)      |      Length                   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                      Contents                                 ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

<span class="h4"><a class="selflink" id="section-2.2.2" href="#section-2.2.2">2.2.2</a> IPv6 Destination ID</span>

    0                    1                         2            3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|Dest ID Type (0x0964)      |      Length                   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                      Contents                                 ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+











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<span class="h4"><a class="selflink" id="section-2.2.3" href="#section-2.2.3">2.2.3</a> NSAP Destination ID</span>

    0                    1                         2            3
    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |U|F|Dest  ID Type (0x0965)     |      Length                   |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
   |                                                               |
   ~                      Contents                                 ~
   |                                                               |
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

<span class="h3"><a class="selflink" id="section-2.3" href="#section-2.3">2.3</a>  Egress Label TLV</span>

   The Egress Label TLV is encoded as:

       0                    1                         2            3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |U|F|Egress Label (0x966)       |        Length                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      ~                      Contents                                 ~
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The content and usage of this TLV are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h3"><a class="selflink" id="section-2.4" href="#section-2.4">2.4</a>  Local Connection ID TLV</span>

   The Local Connection ID TLV is encoded as:

       0                    1                         2            3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |U|F|Local Conn. ID (0x967)     |        Length                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      ~                      Contents                                 ~
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The content and usage of this TLV are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].








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<span class="h3"><a class="selflink" id="section-2.5" href="#section-2.5">2.5</a>  Diversity TLV</span>

   The Diversity TLV is encoded as:

       0                    1                         2            3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |U|F|Diversity (0x968)          |        Length                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      ~                      Contents                                 ~
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The content and usage of this TLV are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h3"><a class="selflink" id="section-2.6" href="#section-2.6">2.6</a>  Contract ID TLV</span>

   The Contract ID TLV is encoded as:

       0                    1                         2            3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |U|F|Contract ID (0x969)        |        Length                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      ~                      Contents                                 ~
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The content and usage of this TLV are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h3"><a class="selflink" id="section-2.7" href="#section-2.7">2.7</a>  UNI Service Level TLV</span>

   The UNI Service Level TLV is encoded as:

       0                    1                         2            3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |U|F|Service Level (0x970)      |        Length                 |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                                                               |
      ~                      Contents                                 ~
      |                                                               |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The content and usage of this TLV are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].




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<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>. RSVP Extensions for UNI Signaling</span>

   A single new object class, called "Generalized_UNI" is defined.  In
   addition, extension to the RSVP session object and new UNI-specific
   error codes are defined.  These are described below.

<span class="h3"><a class="selflink" id="section-3.1" href="#section-3.1">3.1</a>  Generalized_UNI Object</span>

   The GENERALIZED_UNI object has the following format:

       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Length (>8)             | CNum(229)     |  C-Type (1)   |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      //                        (Subobjects)                         //
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   Subobjects:

   The contents of a GENERALIZED_UNI object are a series of variable-
   length data items.  The common format of the sub-objects is shown
   below:

       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Length                  |    Type       |  Sub-Type     |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      //                             Value                           //
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The following sub-objects are defined.  The contents of these sub-
   objects are described in [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>]:

   -  Source Transport Network Assigned (TNA) Address sub-object:
      Type = 1.  The following sub-types are defined:

               Ipv4 (Sub-type = 1);
               Ipv6 (Sub-type = 2);
               NSAP (Sub-type = 3).

      -  Destination TNA Address sub-object: Type = 2;
         The following sub-types are defined:

               Ipv4 (Sub-type = 1);
               Ipv6 (Sub-type = 2);
               NSAP (Sub-type = 3).



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      -  Diversity sub-object: Type = 3, Sub-type = 1.
      -  Egress label sub-object: Type = 4, Sub-type = 1.
      -  Service level sub-object: Type = 5, Sub-type = 1.

<span class="h3"><a class="selflink" id="section-3.2" href="#section-3.2">3.2</a>  UNI_Ipv4_Session Object</span>

   This object [<a href="#ref-7" title=""RSVP-TE: Extensions to RSVP for LSP Tunnels"">7</a>] has the following format:

   UNI_IPv4_SESSION object: Class = 1, C-Type = 11

       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Length (16)             | Class-Num(1)  |C-Type (11)    |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                         IPv4 Address                          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       MUST be zero            |      Tunnel ID                |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                   Extended IPv4 Address                       |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

   The C-Type value (11) will distinguish UNI-related RSVP Sessions
   from other RSVP sessions.  The usage of this object is described in
   [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h3"><a class="selflink" id="section-3.3" href="#section-3.3">3.3</a>  Error Codes</span>

   UNI-specific errors fall under the "Routing Problem" (error code =
   24) [<a href="#ref-7" title=""RSVP-TE: Extensions to RSVP for LSP Tunnels"">7</a>] and "Policy Control Failure" (error code = 2) [<a href="#ref-5" title=""RSVP Functional Specification"">5</a>] errors, and
   they require the assignment of sub-codes.  The following is the list
   of errors and proposed assignments of sub-codes:

   -  Routing Problem: Diversity not available (Error code = 24, sub-
      code = 100)
   -  Routing Problem: Service level not available (Error code = 24,
      sub-code = 101)
   -  Routing problem: Invalid/Unknown connection ID (Error code = 24,
      sub-code = 102)
   -  Policy control failure: Unauthorized sender (Error code = 2, sub-
      code = 100)
   -  Policy control failure: Unauthorized receiver (Error code = 2,
      sub-code = 101)








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<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>. IANA Considerations</span>

   The OIF UNI 1.0 specification defines new objects and error codes
   under LDP and RSVP.  The majority of these extensions require code
   point assignments via IETF consensus action.  These are summarized
   below.

<span class="h3"><a class="selflink" id="section-4.1" href="#section-4.1">4.1</a> LDP Messages, TLVs and Status Codes</span>

   TLV types 0x0960 - 0x0970 as described in Sections <a href="#section-2.1">2.1</a> - <a href="#section-2.7">2.7</a> above.

   UNI-specific status codes have been allocated out of the Private Use
   space, i.e., 0x3Fxxxxxx.  These do not require IANA administration.

<span class="h3"><a class="selflink" id="section-4.2" href="#section-4.2">4.2</a>  RSVP Object Class and Error Codes</span>

   Generalized_UNI object class (<a href="#section-3.1">Section 3.1</a>), Class Number 229, C-Type
   1.  Further sub-objects are defined, with Type numbers 1-5 and
   various Sub-Type numbers, as described in <a href="#section-3.1">Section 3.1</a>.  The code
   points for the Generalized_UNI object and the associated sub-objects
   require IANA administration.

   UNI_Ipv4_Session Object (Class-Num = 1, C-Type = 11), as described in
   <a href="#section-3.2">Section 3.2</a>.

   UNI-specific errors fall under the Routing Problem and Policy Control
   Failure errors (error codes 24 and 2).  Sub-codes under error code 24
   are 100, 101 and 102, as described in <a href="#section-3.3">Section 3.3</a>.  Sub-codes under
   error code 2 are 100 and 101, as described in <a href="#section-3.3">Section 3.3</a>.

<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>. Security Considerations</span>

   Security considerations related to RSVP, RSVP-TE and LDP are
   described in <a href="#section-2.8">Section 2.8</a>, <a href="#section-6">Section 6</a> and <a href="#section-5">Section 5</a> of RFCs 2205 [<a href="#ref-5" title=""RSVP Functional Specification"">5</a>],
   3209 [9] and 3036 [<a href="#ref-6" title=""LDP Specification"">6</a>], respectively.  Security considerations
   pertaining to UNI signaling using the extensions described in this
   document and how these relate to the security aspects of RSVP, RSVP-
   TE and LDP are described in <a href="#section-13.4">Section 13.4</a> of the UNI specification
   [<a href="#ref-8" title="The Optical Internetworking Forum">8</a>].

<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>. References</span>

   [<a id="ref-1">1</a>] Berger, L., Editor, "Generalized Multi-Protocol Label Switching
       (MPLS) Signaling Functional Description", <a href="./rfc3471">RFC 3471</a>, January 2003.

   [<a id="ref-2">2</a>] Berger, L., Editor,  "Generalized Multi-Protocol Label Switching
       (MPLS) Signaling Resource ReserVation Protocol-Traffic
       Engineering (RSVP-TE) Extensions", <a href="./rfc3473">RFC 3473</a>, January 2003.



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   [<a id="ref-3">3</a>] Ashwood-Smith, P. and L. Berger, Editors, "Generalized Multi-
       Protocol Label Switching (MPLS) Signaling Constraint-based Routed
       Label Distribution Protocol (CR-LDP) Extensions", <a href="./rfc3472">RFC 3472</a>,
       January 2003.

   [<a id="ref-4">4</a>] E. Mannie, et al., <a style="text-decoration: none" href='https://www.google.com/search?sitesearch=datatracker.ietf.org%2Fdoc%2Fhtml%2F&q=inurl:draft-+%22GMPLS+Extensions+for+SONET+and+SDH+Control%22'>"GMPLS Extensions for SONET and SDH Control"</a>,
       Work in Progress.

   [<a id="ref-5">5</a>] Braden, R., Editor, Zhang, L., Berson, S., Herzog, S. and S.
       Jamin, "RSVP Functional Specification", <a href="./rfc2205">RFC 2205</a>, September 1997.

   [<a id="ref-6">6</a>] Andersson, L., Doolan, P., Feldman, N., Fredette, A. and B.
       Thomas, "LDP Specification", <a href="./rfc3036">RFC 3036</a>, January 2001.

   [<a id="ref-7">7</a>] Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V. and G.
       Swallow, "RSVP-TE: Extensions to RSVP for LSP Tunnels", <a href="./rfc3209">RFC 3209</a>,
       December 2001.

   [<a id="ref-8">8</a>] UNI 1.0 Signaling Specification, The Optical Internetworking
       Forum, <a href="http://www.oiforum.com/public/UNI_1.0_ia.html">http://www.oiforum.com/public/UNI_1.0_ia.html</a>

<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>. Intellectual Property</span>

   The IETF takes no position regarding the validity or scope of any
   intellectual property or other rights that might be claimed to
   pertain to the implementation or use of the technology described in
   this document or the extent to which any license under such rights
   might or might not be available; neither does it represent that it
   has made any effort to identify any such rights.  Information on the
   IETF's procedures with respect to rights in standards-track and
   standards-related documentation can be found in <a href="./rfc2028">RFC 2028</a>.

   Copies of claims of rights made available for publication and any
   assurances of licenses to be made available, or the result of an
   attempt made to obtain a general license or permission for the use of
   such proprietary rights by implementors or users of this
   specification can be obtained from the IETF Secretariat.

   The IETF invites any interested party to bring to its attention any
   copyrights, patents or patent applications, or other proprietary
   rights which may cover technology that may be required to practice
   this standard.  Please address the information to the IETF Executive
   Director.








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<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>. Author's Address</span>

   Bala Rajagopalan
   Tellium, Inc.
   2 Crescent Place
   Ocean Port, NJ 07757

   Phone: +1-732-923-4237
   EMail: [email protected]










































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<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>. Full Copyright Statement</span>

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
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Rajagopalan                  Informational                     [Page 11]

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