Applicability of MPLS-TP Linear Protection for Ring Topologies
draft-ietf-mpls-tp-ring-protection-01

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Document Type Active Internet-Draft (mpls WG)
Last updated 2012-02-15 (latest revision 2011-11-14)
Replaces draft-weingarten-mpls-tp-ring-protection
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Network Working Group                                      Y. Weingarten
Internet-Draft                                    Nokia Siemens Networks
Intended status: Informational                                 S. Bryant
Expires: August 18, 2012                                           Cisco
                                                             N. Sprecher
                                                  Nokia Siemens Networks
                                                           D. Ceccarelli
                                                             D. Caviglia
                                                             F. Fondelli
                                                                Ericsson
                                                                M. Corsi
                                                                  Altran
                                                                   B. Wu
                                                                  X. Dai
                                                         ZTE Corporation
                                                       February 15, 2012

     Applicability of MPLS-TP Linear Protection for Ring Topologies
               draft-ietf-mpls-tp-ring-protection-01.txt

Abstract

   This document presents an applicability statement to address the
   requirements for protection of ring topologies for Multi-Protocol
   Label Switching Transport Profile (MPLS-TP) Label Switched Paths
   (LSP) on multiple layers.  The MPLS-TP Requirements document
   specifies specific criteria for justification of dedicated protection
   mechanism for particular topologies, including optimizing the number
   of OAM entities needed, minimizing the number of labels for
   protection paths, minimizing the number of recovery elements in the
   network, and minimizing the number of control and management
   transactions necessary.  The document proposes a methodology for ring
   protection based on existing MPLS-TP survivability mechanisms,
   specifically those defined in MPLS-TP Linear Protection, without the
   need for specification of new constructs or protocols.

   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.

Status of this Memo

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

Weingarten, et al.       Expires August 18, 2012                [Page 1]
Internet-Draft                 MPLS-TP RP                  February 2012

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   This Internet-Draft will expire on August 18, 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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   described in the Simplified BSD License.

Weingarten, et al.       Expires August 18, 2012                [Page 2]
Internet-Draft                 MPLS-TP RP                  February 2012

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Problem statement  . . . . . . . . . . . . . . . . . . . .  4
     1.2.  Terminology and Notation . . . . . . . . . . . . . . . . .  5
     1.3.  Contributing Authors . . . . . . . . . . . . . . . . . . .  7
   2.  P2P Ring Protection  . . . . . . . . . . . . . . . . . . . . .  7
     2.1.  Wrapping . . . . . . . . . . . . . . . . . . . . . . . . .  7
     2.2.  Steering . . . . . . . . . . . . . . . . . . . . . . . . .  9
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