Using A Generic Associated Channel Label as a Virtual Circuit Connectivity Verification Channel Indicator
draft-ietf-pals-vccv-for-gal-05

The information below is for an old version of the document
Document Type Active Internet-Draft (pals WG)
Last updated 2015-09-17 (latest revision 2015-08-10)
Replaces draft-ietf-pwe3-vccv-for-gal
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Matthew Bocci
Shepherd write-up Show (last changed 2015-08-25)
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IANA IANA review state IANA OK - Actions Needed
PALS                                                           T. Nadeau
Internet-Draft                                               lucidvision
Intended status: Standards Track                              L. Martini
Expires: February 11, 2016                                     S. Bryant
                                                           Cisco Systems
                                                         August 10, 2015

     Using A Generic Associated Channel Label as a Virtual Circuit
              Connectivity Verification Channel Indicator
                    draft-ietf-pals-vccv-for-gal-05

Abstract

   The Virtual Circuit Connectivity Verification (VCCV) protocol
   specified in RFC 5085 provides a control channel (CC) that is
   associated with a pseudowire (PW).  This document specifies an
   additional VCCV control channel type to be used with pseudowires (PW)
   which do not use the PW Control Word and which are carried over an
   MPLS network.  This new VCCV CC type uses the Generic Associated
   Channel Label defined in RFC5586 to distinguish VCCV packets from
   packets carrying user data.  This new VCCV CC type introduces
   compatibility with the method of MPLS Label Switched Path Operations,
   Administration, and Maintenance (OAM) identification, particularly in
   MPLS Transport Profile (MPLS-TP) networks (RFC5921).

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
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   This Internet-Draft will expire on February 11, 2016.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Nadeau, et al.          Expires February 11, 2016               [Page 1]
Internet-Draft            GAL as a VCCV Channel              August 2015

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   3
   3.  Type 4 MPLS VCCV Control Channel Type . . . . . . . . . . . .   3
   4.  FAT PWs . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   5.  Multi-Segment Pseudowires . . . . . . . . . . . . . . . . . .   5
   6.  VCCV Capability Advertisement . . . . . . . . . . . . . . . .   5
   7.  Manageability Considerations  . . . . . . . . . . . . . . . .   6
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
     9.1.  MPLS VCCV Control Channel (CC) Type 4 . . . . . . . . . .   6
     9.2.  LDP Status Code . . . . . . . . . . . . . . . . . . . . .   7
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   7
     11.2.  Informative References . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   The Virtual Circuit Connectivity Verification (VCCV) protocol is
   specified in RFC 5085 [RFC5085].  This document specifies a new VCCV
   control channel (VCCV CC) type to be used with pseudowires (PW)
   carried over an MPLS network that do not use the PW Control Word (CW)
   [RFC4385].  This new VCCV CC type uses the Generic Associated Channel
   Label (GAL) [RFC5586] to distinguish VCCV packets from packets
   carrying user data.  This new VCCV CC type provides compatibility
   with the method of MPLS Label Switched Path (LSP) Operations,
   Administration, and Maintenance (OAM) message identification, as used
   in MPLS Transport Profile (MPLS-TP) networks [RFC5921].

   VCCV currently specifies three CC types.  VCCV CC Type 1 uses the PW
   Control Word (CW) to distinguish VCCV packets from packets carrying
   user data.  VCCV CC Types 2 and 3 require IP encapsulation for OAM
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