GMPLS Asymmetric Bandwidth Bidirectional Label Switched Paths (LSPs)
RFC 5467

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Network Working Group                                          L. Berger
Request for Comments: 5467                                          LabN
Category: Experimental                                         A. Takacs
                                                                Ericsson
                                                             D. Caviglia
                                                                Ericsson
                                                                D. Fedyk
                                                                  Nortel
                                                               J. Meuric
                                                          France Telecom
                                                              March 2009

  GMPLS Asymmetric Bandwidth Bidirectional Label Switched Paths (LSPs)

Status of This Memo

   This memo defines an Experimental Protocol for the Internet
   community.  It does not specify an Internet standard of any kind.
   Discussion and suggestions for improvement are requested.
   Distribution of this memo is unlimited.

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Berger, et al.                Experimental                      [Page 1]
RFC 5467         Asymmetric Bandwidth Bidirectional LSP       March 2009

Abstract

   This document defines a method for the support of GMPLS asymmetric
   bandwidth bidirectional Label Switched Paths (LSPs).  The presented
   approach is applicable to any switching technology and builds on the
   original Resource Reservation Protocol (RSVP) model for the transport
   of traffic-related parameters.  The procedures described in this
   document are experimental.

Table of Contents

   1. Introduction ....................................................2
      1.1. Background .................................................3
      1.2. Approach Overview ..........................................3
      1.3. Conventions Used in This Document ..........................4
   2. Generalized Asymmetric Bandwidth Bidirectional LSPs .............4
      2.1. UPSTREAM_FLOWSPEC Object ...................................5
           2.1.1. Procedures ..........................................5
      2.2. UPSTREAM_TSPEC Object ......................................5
           2.2.1. Procedures ..........................................5
      2.3. UPSTREAM_ADSPEC Object .....................................6
           2.3.1. Procedures ..........................................6
   3. Packet Formats ..................................................6
   4. Compatibility ...................................................7
   5. IANA Considerations .............................................8
      5.1. UPSTREAM_FLOWSPEC Object ...................................8
      5.2. UPSTREAM_TSPEC Object ......................................8
      5.3. UPSTREAM_ADSPEC Object .....................................8
   6. Security Considerations .........................................8
   7. References ......................................................9
      7.1. Normative References .......................................9
      7.2. Informative References .....................................9
   Appendix A. Alternate Approach Using ADSPEC Object.................11
      A.1. Applicability .............................................11
      A.2. Overview ..................................................11
      A.3. Procedures ................................................12
      A.4. Compatibility .............................................13

1.  Introduction

   GMPLS [RFC3473] introduced explicit support for bidirectional Label
   Switched Paths (LSPs).  The defined support matched the switching
   technologies covered by GMPLS, notably Time Division Multiplexing