MPLS Transport Profile (MPLS-TP) Linear Protection in Support of ITU-T's Requirements
draft-ryoogray-mpls-tp-psc-itu-00

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Last updated 2013-10-20
Replaces draft-cdh-mpls-tp-psc-non-revertive, draft-rhd-mpls-tp-psc-sd, draft-rhd-mpls-tp-psc-priority, draft-dj-mpls-tp-exer-psc
Replaced by draft-ietf-mpls-tp-psc-itu
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MPLS Working Group                                          J. Ryoo, Ed.
Internet-Draft                                                      ETRI
Intended status: Standards Track                            E. Gray, Ed.
Expires: April 23, 2014                                         Ericsson
                                                         H. van Helvoort
                                                     Huawei Technologies
                                                         A. D'Alessandro
                                                          Telecom Italia
                                                               T. Cheung
                                                                    ETRI
                                                              E. Osborne
                                                     Cisco Systems, Inc.
                                                        October 20, 2013

MPLS Transport Profile (MPLS-TP) Linear Protection in Support of ITU-T's
                              Requirements
                 draft-ryoogray-mpls-tp-psc-itu-00.txt

Abstract

   This document contains the updates to [RFC6378], "MPLS Transport
   Profile (MPLS-TP) Linear Protection", in an effort to satisfy the
   ITU-T's protection switching requirements.  The following
   capabilities are required by ITU-T and described in this documents:
   priority modification, modification of non-revertive behavior,
   support of Manual Switch to Working (MS-W) command, support of
   protection against Signal Degrade (SD), and support of Exercise
   command.  The behavior described in [RFC6378] are modified in order
   to preserve the network operation behavior to which network operators
   have become accustomed.

   This document introduces capabilities and modes to PSC.  A capability
   is an individual behavior, and a node's set of capabilities are
   signalled using the method given in this document.  A mode is a
   particular combination of capabilities.

   This document describes the behavior of the Protection State
   Coordination (PSC) protocol including priority logic and state
   machine when all of the aforementioned capabilities are enabled.

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
   Task Force (IETF).  Note that other groups may also distribute

Ryoo, et al.             Expires April 23, 2014                 [Page 1]
Internet-Draft            MPLS-TP LP for ITU-T              October 2013

   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on April 23, 2014.

Copyright Notice

   Copyright (c) 2013 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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   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.  Acronyms  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Capability 1: Priority Modification . . . . . . . . . . . . .   5
     4.1.  Motivations for swapping priorities of FS and SF-P  . . .   5
     4.2.  Motivation for raising the priority of Clear SF . . . . .   6
     4.3.  Motivation for introducing Freeze command . . . . . . . .   6
     4.4.  Updates to the PSC RFC  . . . . . . . . . . . . . . . . .   6
   5.  Capability 2: Modification of Non-revertive Operation . . . .   7
   6.  Capability 3: Support of Manual Switch to Working Command . .   7
     6.1.  Motivation for adding Manual Switch to Working  . . . . .   7
     6.2.  Terms modified to support MS-W  . . . . . . . . . . . . .   7
     6.3.  Behavior of MS-P and MS-W . . . . . . . . . . . . . . . .   8
     6.4.  Equal priority resolution for MS  . . . . . . . . . . . .   8
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