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Pseudowire (PW) Operations, Administration, and Maintenance (OAM) Message Mapping
RFC 6310

Internet Engineering Task Force (IETF)                       M. Aissaoui
Request for Comments: 6310                                 P. Busschbach
Category: Standards Track                                 Alcatel-Lucent
ISSN: 2070-1721                                               L. Martini
                                                               M. Morrow
                                                     Cisco Systems, Inc.
                                                               T. Nadeau
                                                         CA Technologies
                                                             Y(J). Stein
                                                 RAD Data Communications
                                                               July 2011

   Pseudowire (PW) Operations, Administration, and Maintenance (OAM)
                            Message Mapping

Abstract

   This document specifies the mapping and notification of defect states
   between a pseudowire (PW) and the Attachment Circuits (ACs) of the
   end-to-end emulated service.  It standardizes the behavior of
   Provider Edges (PEs) with respect to PW and AC defects.  It addresses
   ATM, Frame Relay, Time Division Multiplexing (TDM), and Synchronous
   Optical Network / Synchronous Digital Hierarchy (SONET/SDH) PW
   services, carried over MPLS, MPLS/IP, and Layer 2 Tunneling Protocol
   version 3/IP (L2TPv3/IP) Packet Switched Networks (PSNs).

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/rfc6310.

Aissaoui, et al.             Standards Track                    [Page 1]
RFC 6310                 PW OAM Message Mapping                July 2011

Copyright Notice

   Copyright (c) 2011 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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Aissaoui, et al.             Standards Track                    [Page 2]
RFC 6310                 PW OAM Message Mapping                July 2011

Table of Contents

   1. Introduction ....................................................4
   2. Abbreviations and Conventions ...................................5
      2.1. Abbreviations ..............................................5
      2.2. Conventions ................................................6
   3. Reference Model and Defect Locations ............................7
   4. Abstract Defect States ..........................................8
   5. OAM Modes .......................................................9
   6. PW Defect States and Defect Notifications ......................11
      6.1. PW Defect Notification Mechanisms .........................11
           6.1.1. LDP Status TLV .....................................13
           6.1.2. L2TP Circuit Status AVP ............................14
           6.1.3. BFD Diagnostic Codes ...............................16
      6.2. PW Defect State Entry/Exit ................................18
           6.2.1. PW Receive Defect State Entry/Exit Criteria ........18

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