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Bidirectional Forwarding Detection (BFD) for the Pseudowire Virtual Circuit Connectivity Verification (VCCV)
RFC 5885

Document type: RFC - Proposed Standard (June 2010)
Updated by RFC 6478
Document stream: IETF
Last updated: 2013-03-02
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Unknown
Document shepherd: No shepherd assigned

IESG State: RFC 5885 (Proposed Standard)
Responsible AD: Ralph Droms
Send notices to: pwe3-chairs@tools.ietf.org, draft-ietf-pwe3-vccv-bfd@tools.ietf.org

Internet Engineering Task Force (IETF)                    T. Nadeau, Ed.
Request for Comments: 5885                                            BT
Category: Standards Track                              C. Pignataro, Ed.
ISSN: 2070-1721                                      Cisco Systems, Inc.
                                                               June 2010

              Bidirectional Forwarding Detection (BFD) for
    the Pseudowire Virtual Circuit Connectivity Verification (VCCV)

Abstract

   This document describes Connectivity Verification (CV) Types using
   Bidirectional Forwarding Detection (BFD) with Virtual Circuit
   Connectivity Verification (VCCV).  VCCV provides a control channel
   that is associated with a pseudowire (PW), as well as the
   corresponding operations and management functions such as
   connectivity verification to be used over that control channel.

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/rfc5885.

Copyright Notice

   Copyright (c) 2010 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.

Nadeau & Pignataro           Standards Track                    [Page 1]
RFC 5885                        BFD VCCV                       June 2010

   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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Specification of Requirements  . . . . . . . . . . . . . . . .  3
   3.  Bidirectional Forwarding Detection Connectivity
       Verification . . . . . . . . . . . . . . . . . . . . . . . . .  3
     3.1.  BFD CV Type Operation  . . . . . . . . . . . . . . . . . .  4
     3.2.  BFD Encapsulation  . . . . . . . . . . . . . . . . . . . .  5
     3.3.  CV Types for BFD . . . . . . . . . . . . . . . . . . . . .  7
   4.  Capability Selection . . . . . . . . . . . . . . . . . . . . .  9
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10
     5.1.  MPLS CV Types for the VCCV Interface Parameters Sub-TLV  . 10
     5.2.  PW Associated Channel Type . . . . . . . . . . . . . . . . 10
     5.3.  L2TPv3 CV Types for the VCCV Capability AVP  . . . . . . . 11
   6.  Congestion Considerations  . . . . . . . . . . . . . . . . . . 11
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 12
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 12
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 13

Nadeau & Pignataro           Standards Track                    [Page 2]
RFC 5885                        BFD VCCV                       June 2010

1.  Introduction

   This document describes Connectivity Verification (CV) Types using
   Bidirectional Forwarding Detection (BFD) with Virtual Circuit
   Connectivity Verification (VCCV).  VCCV [RFC5085] provides a control
   channel that is associated with a pseudowire (PW), as well as the

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