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MPLS and Ethernet Operations, Administration, and Maintenance (OAM) Interworking
RFC 7023

Internet Engineering Task Force (IETF)                     D. Mohan, Ed.
Request for Comments: 7023                               Nortel Networks
Category: Standards Track                                  N. Bitar, Ed.
ISSN: 2070-1721                                                  Verizon
                                                         A. Sajassi, Ed.
                                                                   Cisco
                                                               S. Delord
                                                          Alcatel-Lucent
                                                                P. Niger
                                                          France Telecom
                                                                  R. Qiu
                                                                 Juniper
                                                            October 2013

  MPLS and Ethernet Operations, Administration, and Maintenance (OAM)
                              Interworking

Abstract

   This document specifies the mapping of defect states between Ethernet
   Attachment Circuits (ACs) and associated Ethernet pseudowires (PWs)
   connected in accordance with the Pseudowire Emulation Edge-to-Edge
   (PWE3) architecture to realize an end-to-end emulated Ethernet
   service.  It standardizes the behavior of Provider Edges (PEs) with
   respect to Ethernet PW and AC defects.

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/rfc7023.

Mohan, et al.                Standards Track                    [Page 1]
RFC 7023           MPLS and Ethernet OAM Interworking       October 2013

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
   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.

Mohan, et al.                Standards Track                    [Page 2]
RFC 7023           MPLS and Ethernet OAM Interworking       October 2013

Table of Contents

   1. Introduction ....................................................4
      1.1. Specification of Requirements ..............................4
   2. Overview ........................................................4
      2.1. Reference Model and Defect Locations .......................6
      2.2. Abstract Defect States .....................................6
   3. Abbreviations and Terminology ...................................7
      3.1. Abbreviations ..............................................7
      3.2. Terminology ................................................8
   4. PW Status and Defects ...........................................9
      4.1. Use of Native Service (NS) Notification ....................9
      4.2. Use of PW Status Notification for MPLS PSNs ...............10
      4.3. Use of BFD Diagnostic Codes ...............................10
      4.4. PW Defect States Entry and Exit Criteria ..................11
           4.4.1. PW Receive Defect State Entry and Exit .............11
           4.4.2. PW Transmit Defect State Entry and Exit ............11
   5. Ethernet AC Defect States Entry and Exit Criteria ..............12
      5.1. AC Receive Defect State Entry and Exit ....................12
      5.2. AC Transmit Defect State Entry and Exit ...................13
   6. Ethernet AC and PW Defect States Interworking ..................14
      6.1. PW Receive Defect State Entry Procedures ..................14
      6.2. PW Receive Defect State Exit Procedures ...................15
      6.3. PW Transmit Defect State Entry Procedures .................16
      6.4. PW Transmit Defect State Exit Procedures ..................16
      6.5. AC Receive Defect State Entry Procedures ..................16

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