MPLS Generic Associated Channel (G-ACh) Advertisement Protocol
draft-ietf-mpls-gach-adv-00

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Document Type Active Internet-Draft (mpls WG)
Last updated 2012-01-27
Replaces draft-fbb-mpls-gach-adv
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MPLS                                                       D. Frost, Ed.
Internet-Draft                                            S. Bryant, Ed.
Intended status: Standards Track                           Cisco Systems
Expires: July 30, 2012                                     M. Bocci, Ed.
                                                          Alcatel-Lucent
                                                        January 27, 2012

     MPLS Generic Associated Channel (G-ACh) Advertisement Protocol
                      draft-ietf-mpls-gach-adv-00

Abstract

   The MPLS Generic Associated Channel (G-ACh) provides an auxiliary
   logical data channel associated with a Label Switched Path (LSP), a
   pseudowire, or a section (link) over which a variety of protocols may
   flow.  These protocols are commonly used to provide Operations,
   Administration, and Maintenance (OAM) mechanisms associated with the
   primary data channel.  This document specifies simple procedures by
   which an endpoint of an LSP, pseudowire, or section may inform the
   other endpoints of its capabilities and configuration parameters, or
   other application-specific information.  This information may then be
   used by the receiver to validate or adjust its local configuration,
   and by the network operator for diagnostic purposes.

Status of this Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   This Internet-Draft will expire on July 30, 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

Frost, et al.             Expires July 30, 2012                 [Page 1]
Internet-Draft      MPLS G-ACh Advertisement Protocol       January 2012

   Provisions Relating to IETF Documents
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   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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Motivation . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
     1.3.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  Message Format . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  G-ACh Advertisement Protocol TLVs  . . . . . . . . . . . . . .  8
     4.1.  Identifier TLVs  . . . . . . . . . . . . . . . . . . . . .  8
     4.2.  GAP Request TLV  . . . . . . . . . . . . . . . . . . . . .  8
     4.3.  GAP Flush TLV  . . . . . . . . . . . . . . . . . . . . . .  9
     4.4.  GAP Suppress TLV . . . . . . . . . . . . . . . . . . . . .  9
     4.5.  GAP Authentication TLV . . . . . . . . . . . . . . . . . .  9
   5.  Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     5.1.  G-ACh Advertisement Message Transmission . . . . . . . . . 10
     5.2.  G-ACh Advertisement Message Reception  . . . . . . . . . . 11
   6.  Message Authentication . . . . . . . . . . . . . . . . . . . . 11
     6.1.  Authentication Key Identifiers . . . . . . . . . . . . . . 11
     6.2.  Authentication Process . . . . . . . . . . . . . . . . . . 12
     6.3.  Hash Computation . . . . . . . . . . . . . . . . . . . . . 13
   7.  Link-Layer Considerations  . . . . . . . . . . . . . . . . . . 14
   8.  Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   9.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 15
   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 15
     10.1. Normative References . . . . . . . . . . . . . . . . . . . 15
     10.2. Informative References . . . . . . . . . . . . . . . . . . 16
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 17

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