Pre-standard Linear Protection Switching in MPLS-TP
draft-zulr-mpls-tp-linear-protection-switching-09

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MPLS Working Group                                  H. van Helvoort, Ed.
Internet-Draft                                       Huawei Technologies
Intended status: Informational                              J. Ryoo, Ed.
Expires: July 29, 2014                                              ETRI
                                                                H. Zhang
                                                     Huawei Technologies
                                                                F. Huang
                                                                 Philips
                                                                   H. Li
                                                            China Mobile
                                                         A. D'Alessandro
                                                          Telecom Italia
                                                        January 25, 2014

          Pre-standard Linear Protection Switching in MPLS-TP
         draft-zulr-mpls-tp-linear-protection-switching-09.txt

Abstract

   The IETF Standards Track solution for MPLS Transport Profile (MPLS-
   TP) Linear Protection is provided in RFC 6378, draft-ietf-mpls-psc-
   updates and draft-ietf- mpls-tp-psc-itu.

   This document describes the pre-standard implementation of MPLS-TP
   Linear Protection that has been deployed by several network operators
   using equipment from multiple vendors.  At the time of publication
   these pre-standard implementations were still in operation carrying
   live traffic."

   The specified mechanism supports 1+1 unidirectional/bidirectional
   protection switching and 1:1 bidirectional protection switching.  It
   is purely supported by MPLS-TP data plane, and can work without any
   control plane.

   This document is a product of a joint Internet Engineering Task Force
   (IETF) / International Telecommunications Union Telecommunications
   Standardization Sector (ITU-T) effort to include an MPLS Transport
   Profile within the IETF MPLS and PWE3 architectures to support the
   capabilities and functionalities of a packet transport network as
   defined by the ITU-T.

   [Editor's note] To be included in "Status of Memo": This document is
   not an Internet Standards Track specification; it is published for
   informational purposes.

van Helvoort, et al.      Expires July 29, 2014                 [Page 1]
Internet-Draft  Pre-standard MPLS-TP Lin. Prot. Switching   January 2014

Status of This Memo

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

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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on July 29, 2014.

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   Copyright (c) 2014 IETF Trust and the persons identified as the
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Linear protection switching overview  . . . . . . . . . . . .   4
     2.1.  Protection architecture types . . . . . . . . . . . . . .   4
       2.1.1.  1+1 architecture  . . . . . . . . . . . . . . . . . .   4
       2.1.2.  1:1 architecture  . . . . . . . . . . . . . . . . . .   5
       2.1.3.  1:n architecture  . . . . . . . . . . . . . . . . . .   5
     2.2.  Protection switching type . . . . . . . . . . . . . . . .   5
     2.3.  Protection operation type . . . . . . . . . . . . . . . .   6
   3.  Protection switching trigger conditions . . . . . . . . . . .   6
     3.1.  Fault conditions  . . . . . . . . . . . . . . . . . . . .   6
     3.2.  External commands . . . . . . . . . . . . . . . . . . . .   6
       3.2.1.  End-to-end commands . . . . . . . . . . . . . . . . .   7
       3.2.2.  Local commands  . . . . . . . . . . . . . . . . . . .   7
   4.  Protection switching schemes  . . . . . . . . . . . . . . . .   8

van Helvoort, et al.      Expires July 29, 2014                 [Page 2]
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