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MPLS Fault Management Operations, Administration, and Maintenance (OAM)
RFC 6427

Internet Engineering Task Force (IETF)                   G. Swallow, Ed.
Request for Comments: 6427                           Cisco Systems, Inc.
Category: Standards Track                              A. Fulignoli, Ed.
ISSN: 2070-1721                                                 Ericsson
                                                       M. Vigoureux, Ed.
                                                          Alcatel-Lucent
                                                              S. Boutros
                                                     Cisco Systems, Inc.
                                                                 D. Ward
                                                  Juniper Networks, Inc.
                                                           November 2011

MPLS Fault Management Operations, Administration, and Maintenance (OAM)

Abstract

   This document specifies Operations, Administration, and Maintenance
   (OAM) messages to indicate service disruptive conditions for MPLS-
   based transport network Label Switched Paths.  The notification
   mechanism employs a generic method for a service disruptive condition
   to be communicated to a Maintenance Entity Group End Point.  This
   document defines an MPLS OAM channel, along with messages to
   communicate various types of service disruptive conditions.

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/rfc6427.

Swallow, et al.              Standards Track                    [Page 1]
RFC 6427                MPLS Fault Management OAM          November 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.

Table of Contents

   1. Introduction ....................................................3
      1.1. Terminology ................................................4
      1.2. Requirements Language ......................................5
   2. MPLS Fault Management Messages ..................................5
      2.1. MPLS Alarm Indication Signal ...............................5
           2.1.1. MPLS Link Down Indication ...........................6
      2.2. MPLS Lock Report ...........................................6
      2.3. Propagation of MPLS Fault Messages .........................7
   3. MPLS Fault Management Channel ...................................7
   4. MPLS Fault Management Message Format ............................8
      4.1. Fault Management Message TLVs ..............................9
           4.1.1. Interface Identifier TLV ...........................10
           4.1.2. Global Identifier ..................................10
   5. Sending and Receiving Fault Management Messages ................10
      5.1. Sending a Fault Management Message ........................10
      5.2. Clearing a Fault Management Indication ....................11
      5.3. Receiving a Fault Management Indication ...................11
   6. Minimum Implementation Requirements ............................12
   7. Security Considerations ........................................12
   8. IANA Considerations ............................................13
      8.1. Pseudowire Associated Channel Type ........................13
      8.2. MPLS Fault OAM Message Type Registry ......................13
      8.3. MPLS Fault OAM Flag Registry ..............................14
      8.4. MPLS Fault OAM TLV Registry ...............................14
   9. References .....................................................15
      9.1. Normative References ......................................15
      9.2. Informative References ....................................15
   10. Contributing Authors ..........................................16

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