Label Switched Path (LSP) Ping for Pseudowire Forwarding Equivalence Classes (FECs) Advertised over IPv6
RFC 6829

Document Type RFC - Proposed Standard (January 2013; No errata)
Updates RFC 4379
Last updated 2013-02-12
Replaces draft-chen-mpls-ipv6-pw-lsp-ping
Stream IETF
Formats plain text pdf html
Stream WG state WG Document
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 6829 (Proposed Standard)
Telechat date
Responsible AD Adrian Farrel
IESG note Loa Andersson (loa.andersson@ericsson.com) is the document shepherd.
Send notices to mpls-chairs@ietf.org, draft-ietf-mpls-ipv6-pw-lsp-ping@ietf.org
Internet Engineering Task Force (IETF)                           M. Chen
Request for Comments: 6829                  Huawei Technologies Co., Ltd
Updates: 4379                                                     P. Pan
Category: Standards Track                                       Infinera
ISSN: 2070-1721                                             C. Pignataro
                                                                R. Asati
                                                                   Cisco
                                                            January 2013

                   Label Switched Path (LSP) Ping for
 Pseudowire Forwarding Equivalence Classes (FECs) Advertised over IPv6

Abstract

   The Multiprotocol Label Switching (MPLS) Label Switched Path (LSP)
   Ping and traceroute mechanisms are commonly used to detect and
   isolate data-plane failures in all MPLS LSPs, including LSPs used for
   each direction of an MPLS Pseudowire (PW).  However, the LSP Ping and
   traceroute elements used for PWs are not specified for IPv6 address
   usage.

   This document extends the PW LSP Ping and traceroute mechanisms so
   they can be used with PWs that are set up and maintained using IPv6
   LDP sessions.  This document updates RFC 4379.

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/rfc6829.

Chen, et al.                 Standards Track                    [Page 1]
RFC 6829                  PW LSP Ping for IPv6              January 2013

Copyright Notice

   Copyright (c) 2013 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  . . . . . . . . . . . . . . . . . . . . . . . . . 2
   2.  Pseudowire IPv4 Target FEC Stack Sub-TLVs . . . . . . . . . . . 3
   3.  Pseudowire IPv6 Target FEC Stack Sub-TLVs . . . . . . . . . . . 4
     3.1.  FEC 128 Pseudowire  . . . . . . . . . . . . . . . . . . . . 4
     3.2.  FEC 129 Pseudowire  . . . . . . . . . . . . . . . . . . . . 5
   4.  Summary of Changes  . . . . . . . . . . . . . . . . . . . . . . 6
   5.  Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 6
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 7
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 7
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 7
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 7
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 7

1.  Introduction

   Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Ping
   and traceroute are defined in [RFC4379].  These mechanisms can be
   used to detect data-plane failures in all MPLS LSPs, including
   Pseudowires (PWs).  However, the PW LSP Ping and traceroute elements
   are not specified for IPv6 address usage.

   Specifically, the PW Forwarding Equivalence Class (FEC) sub-TLVs for
   the Target FEC Stack in the LSP Ping and traceroute mechanism are
   defined only for IPv4 Provider Edge (PE) routers and are not
   applicable for the case where PEs use IPv6 addresses.  Three PW-
   related Target FEC sub-TLVs are currently defined (FEC 128
   Pseudowire-Deprecated, FEC 128 Pseudowire-Current, and FEC 129
   Pseudowire, see Sections 3.2.8 through 3.2.10 of [RFC4379]).  These
   sub-TLVs contain the source and destination addresses of the LDP
   session, and currently only an IPv4 LDP session is covered.  Despite

Chen, et al.                 Standards Track                    [Page 2]
RFC 6829                  PW LSP Ping for IPv6              January 2013
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