Label Switched Path (LSP) Ping for IPv6 Pseudowire FECs
draft-ietf-mpls-ipv6-pw-lsp-ping-03

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Network Working Group                                            M. Chen
Internet-Draft                              Huawei Technologies Co., Ltd
Updates: 4379 (if approved)                                       P. Pan
Intended status: Standards Track                                Infinera
Expires: April 27, 2013                                     C. Pignataro
                                                                R. Asati
                                                                   Cisco
                                                        October 24, 2012

        Label Switched Path (LSP) Ping for IPv6 Pseudowire FECs
                  draft-ietf-mpls-ipv6-pw-lsp-ping-03

Abstract

   Multi-Protocol 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 Pseudowire (PW) LSPs.
   The PW LSP Ping and traceroute elements, however, are not specified
   for IPv6 address usage.

   This document extends the PW LSP Ping and traceroute mechanisms so
   they can be used with IPv6 PWs, and updates RFC 4379.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 27, 2013.

Copyright Notice

Chen, et al.             Expires April 27, 2013                 [Page 1]
Internet-Draft              IPv6 PW LSP Ping                October 2012

   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
   Provisions Relating to IETF Documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 3
   2.  IPv4 Pseudowire Sub-TLVs  . . . . . . . . . . . . . . . . . . . 3
   3.  IPv6 Pseudowire Sub-TLVs  . . . . . . . . . . . . . . . . . . . 4
     3.1.  IPv6 FEC 128 Pseudowire Sub-TLV . . . . . . . . . . . . . . 4
     3.2.  IPv6 FEC 129 Pseudowire Sub-TLV . . . . . . . . . . . . . . 5
   4.  Summary of Changes  . . . . . . . . . . . . . . . . . . . . . . 7
   5.  Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . . . 8
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . . . 8
     9.2.  Informative References  . . . . . . . . . . . . . . . . . . 8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . . . 8

Chen, et al.             Expires April 27, 2013                 [Page 2]
Internet-Draft              IPv6 PW LSP Ping                October 2012

1.  Introduction

   Multi-Protocol 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 Label Switched Paths
   (LSPs) including Pseudowires (PWs).  The PW LSP Ping and traceroute
   elements, however, are not specified for IPv6 address usage.

   Specifically, the PW FEC sub-TLVs for the Target FEC Stack in the LSP
   Ping and traceroute mechanism are defined only for IPv4 Provider Edge
   (PEs) routers, and are not applicable for the case where PEs use IPv6
   addresses.  Three PW related Target Forwarding Equivalence Class
   (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