RSVP-TE Extensions for Associated Bidirectional LSPs
draft-ietf-ccamp-mpls-tp-rsvpte-ext-associated-lsp-03

The information below is for an old version of the document
Document Type Active Internet-Draft (ccamp WG)
Authors Fei Zhang  , Ruiquan Jing 
Last updated 2012-03-07
Replaced by RFC 7551, RFC 7551
Stream Internet Engineering Task Force (IETF)
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CCAMP Working Group                                        F. Zhang, Ed.
Internet-Draft                                                       ZTE
Intended status: Standards Track                                 R. Jing
Expires: September 7, 2012                                 China Telecom
                                                          March 06, 2012

          RSVP-TE Extensions for Associated Bidirectional LSPs
         draft-ietf-ccamp-mpls-tp-rsvpte-ext-associated-lsp-03

Abstract

   The MPLS Transport Profile (MPLS-TP) requirements document [RFC5654],
   describes that MPLS-TP MUST support associated bidirectional point-
   to-point LSPs.

   This document provides a method to bind two unidirectional Label
   Switched Paths (LSPs) into an associated bidirectional LSP.  The
   association is achieved by defining the new Association Types in the
   Extended ASSOCIATION object.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on September 7, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

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   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Conventions used in this document  . . . . . . . . . . . . . .  4
   3.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     3.1.  Provisioning Model . . . . . . . . . . . . . . . . . . . .  4
     3.2.  Signaling Procedure  . . . . . . . . . . . . . . . . . . .  4
       3.2.1.  Single Sided Provisioning Model  . . . . . . . . . . .  5
       3.2.2.  Double Sided Provisioning Model  . . . . . . . . . . .  5
       3.2.3.  Asymmetric Bandwidth LSPs  . . . . . . . . . . . . . .  6
       3.2.4.  Recovery Considerations  . . . . . . . . . . . . . . .  6
       3.2.5.  Teardown of associated bidirectional LSPs  . . . . . .  7
   4.  Association of LSPs  . . . . . . . . . . . . . . . . . . . . .  7
     4.1.  Association Types  . . . . . . . . . . . . . . . . . . . .  7
     4.2.  REVERSE_LSP Object . . . . . . . . . . . . . . . . . . . .  8
       4.2.1.  Format . . . . . . . . . . . . . . . . . . . . . . . .  8
         4.2.1.1.  Subobjects . . . . . . . . . . . . . . . . . . . .  9
       4.2.2.  LSP Control  . . . . . . . . . . . . . . . . . . . . .  9
       4.2.3.  Updated RSVP Message Formats . . . . . . . . . . . . .  9
       4.2.4.  Compatibility  . . . . . . . . . . . . . . . . . . . . 10
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
     5.1.  Association Type . . . . . . . . . . . . . . . . . . . . . 10
     5.2.  REVERSE_LSP Object . . . . . . . . . . . . . . . . . . . . 10
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   7.  Acknowledgement  . . . . . . . . . . . . . . . . . . . . . . . 11
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     8.1.  Normative references . . . . . . . . . . . . . . . . . . . 11
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12

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1.  Introduction

   The MPLS Transport Profile (MPLS-TP) requirements document [RFC5654]
   describes that MPLS-TP MUST support associated bidirectional point-
   to-point LSPs.  Furthermore, an associated bidirectional LSP is
   useful for protection switching, for Operations, Administrations and
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