RSVP ASSOCIATION Object Extensions
RFC 6780

Internet Engineering Task Force (IETF)                         L. Berger
Request for Comments: 6780                                          LabN
Updates: 2205, 3209, 3473, 4872                           F. Le Faucheur
Category: Standards Track                                   A. Narayanan
ISSN: 2070-1721                                                    Cisco
                                                            October 2012

                   RSVP ASSOCIATION Object Extensions

Abstract

   The RSVP ASSOCIATION object was defined in the context of GMPLS-
   controlled Label Switched Paths (LSPs).  In this context, the object
   is used to associate recovery LSPs with the LSP they are protecting.
   This object also has broader applicability as a mechanism to
   associate RSVP state.  This document defines how the ASSOCIATION
   object can be more generally applied.  This document also defines
   Extended ASSOCIATION objects that, in particular, can be used in the
   context of the MPLS Transport Profile (MPLS-TP).  This document
   updates RFC 2205, RFC 3209, and RFC 3473.  It also generalizes the
   definition of the Association ID field defined in RFC 4872.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6780.

Berger, et al.               Standards Track                    [Page 1]
RFC 6780                     RSVP Extensions                October 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
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   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 ....................................................2
      1.1. Conventions Used in This Document ..........................4
   2. Generalized Association ID Field Definition .....................4
   3. Non-GMPLS and Non-Recovery Usage ................................4
      3.1. Upstream Initiated Association .............................5
           3.1.1. Path Message Format .................................5
           3.1.2. Path Message Processing .............................6
      3.2. Downstream Initiated Association ...........................7
           3.2.1. Resv Message Format .................................8
           3.2.2. Resv Message Processing .............................8
      3.3. Association Types ..........................................9
           3.3.1. Resource Sharing Association Type ...................9
           3.3.2. Unknown Association Types ..........................10
   4. IPv4 and IPv6 Extended ASSOCIATION Objects .....................10
      4.1. IPv4 and IPv6 Extended ASSOCIATION Object Format ..........11
      4.2. Processing ................................................13
   5. Compatibility ..................................................14
   6. Security Considerations ........................................14
   7. IANA Considerations ............................................15
      7.1. IPv4 and IPv6 Extended ASSOCIATION Objects ................15
      7.2. Resource Sharing Association Type .........................15
   8. Acknowledgments ................................................16
   9. References .....................................................16
      9.1. Normative References ......................................16
      9.2. Informative References ....................................16

Berger, et al.               Standards Track                    [Page 2]
RFC 6780                     RSVP Extensions                October 2012

1.  Introduction

   End-to-end and segment recovery are defined for GMPLS-controlled
   Label Switched Paths (LSPs) in [RFC4872] and [RFC4873], respectively.