Layer 2 Virtual Private Network (L2VPN) Operations, Administration, and Maintenance (OAM) Requirements and Framework
RFC 6136

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Internet Engineering Task Force (IETF)                   A. Sajassi, Ed.
Request for Comments: 6136                                         Cisco
Category: Informational                                    D. Mohan, Ed.
ISSN: 2070-1721                                                   Nortel
                                                              March 2011

                Layer 2 Virtual Private Network (L2VPN)
           Operations, Administration, and Maintenance (OAM)
                       Requirements and Framework

Abstract

   This document provides framework and requirements for Layer 2 Virtual
   Private Network (L2VPN) Operations, Administration, and Maintenance
   (OAM).  The OAM framework is intended to provide OAM layering across
   L2VPN services, pseudowires (PWs), and Packet Switched Network (PSN)
   tunnels.  This document is intended to identify OAM requirements for
   L2VPN services, i.e., Virtual Private LAN Service (VPLS), Virtual
   Private Wire Service (VPWS), and IP-only LAN Service (IPLS).
   Furthermore, if L2VPN service OAM requirements impose specific
   requirements on PW OAM and/or PSN OAM, those specific PW and/or PSN
   OAM requirements are also identified.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see 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/rfc6136.

Sajassi & Mohan               Informational                     [Page 1]
RFC 6136          L2VPN OAM Requirements and Framework        March 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
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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.

   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.

Sajassi & Mohan               Informational                     [Page 2]
RFC 6136          L2VPN OAM Requirements and Framework        March 2011

Table of Contents

   1. Introduction ....................................................4
      1.1. Specification of Requirements ..............................6
      1.2. Relationship with Other OAM Work ...........................6
   2. Terminology .....................................................7
   3. L2VPN Services and Networks .....................................7
   4. L2VPN OAM Framework .............................................8
      4.1. OAM Layering ...............................................8
      4.2. OAM Domains ................................................9
      4.3. MEPs and MIPs .............................................10
      4.4. MEP and MIP Identifiers ...................................11
   5. OAM Framework for VPLS .........................................11
      5.1. VPLS as Service/Network ...................................11
           5.1.1. VPLS as Bridged LAN Service ........................11
           5.1.2. VPLS as a Network ..................................12
           5.1.3. VPLS as (V)LAN Emulation ...........................12
      5.2. VPLS OAM ..................................................13
           5.2.1. VPLS OAM Layering ..................................13
           5.2.2. VPLS OAM Domains ...................................14
           5.2.3. VPLS MEPs and MIPs .................................15