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Updates to MPLS Transport Profile Linear Protection (RFC7324)

IP.com Disclosure Number: IPCOM000238061D
Publication Date: 2014-Jul-30
Document File: 22 page(s) / 24K

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The IP.com Prior Art Database

Related People

E. Osborne: AUTHOR

Abstract

This document contains a number of updates to PSC [RFC6378]. One provides some rules and recommendations around the use of TLVs in PSC. Three of the updates address issues #2, #7, and #8 as identified in the ITU's liaison statement "Recommendation ITU-T G.8131/Y.1382 revision - Linear protection switching for MPLS-TP networks" [LIAISON]. Another clears up a behavior that was not well explained in RFC 6378. These updates are not changes to the protocol's packet format or to PSC's design; they are corrections and clarifications to specific aspects of the protocol's procedures. This document does not introduce backward compatibility issues with implementations of RFC 6378.

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Internet Engineering Task Force (IETF)                        E. Osborne Request for Comments: 7324                                     July 2014 Updates: 6378 Category: Standards Track ISSN: 2070-1721

           Updates to MPLS Transport Profile Linear Protection

Abstract

   This document contains a number of updates to the Protection State    Coordination (PSC) logic defined in RFC 6378, "MPLS Transport Profile    (MPLS-TP) Linear Protection".  These updates provide some rules and    recommendations around the use of TLVs in PSC, address some issues    raised in an ITU-T liaison statement, and clarify PSC's behavior in a    case not well explained in RFC 6378.

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/rfc7324.

Copyright Notice

   Copyright (c) 2014 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    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.

Osborne                      Standards Track                    [Page 1]
 RFC 7324                       PSC Updates                     July 2014

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2

     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3

   2.  Message Formatting and Error Handling . . . . . . . . . . . .   3

     2.1.  PSC TLV Format  . . . . . . . . . . . . . . . . . . . . .   3

     2.2.  Error Handling  . . . . . . . . . . . . . . . . . . . . .   4

       2.2.1.  Malformed Messages  . . . . . . . . . . . . . . . . .   4

       2.2.2.  Well-Formed but Unknown or Unexpected TLV . . . . . .   4

   3.  Incorrect Local Status after Failure  . . . . . . . . . . . .   5

   4.  Han...