Definition of P2MP PW TLV for LSP-Ping Mechanisms
draft-ietf-pals-p2mp-pw-lsp-ping-03

Document Type Active Internet-Draft (pals WG)
Last updated 2017-06-22 (latest revision 2017-04-25)
Replaces draft-jain-pals-p2mp-pw-lsp-ping
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PALS Workgroup                                                   P. Jain
Internet-Draft                                       Cisco Systems, Inc.
Intended status: Standards Track                              S. Boutros
Expires: October 27, 2017                                   VMWare, Inc.
                                                               S. Aldrin
                                                             Google Inc.
                                                          April 25, 2017

           Definition of P2MP PW TLV for LSP-Ping Mechanisms
                  draft-ietf-pals-p2mp-pw-lsp-ping-03

Abstract

   LSP-Ping is a widely deployed Operation, Administration, and
   Maintenance (OAM) mechanism in MPLS networks.  This document
   describes a mechanism to verify connectivity of Point-to-Multipoint
   (P2MP) Pseudowires (PW) using LSP Ping.

Status of This Memo

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   This Internet-Draft will expire on October 27, 2017.

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   Copyright (c) 2017 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
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Jain, et al.            Expires October 27, 2017                [Page 1]
Internet-Draft              P2MP PW LSP Ping                  April 2017

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Specification of Requirements . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Identifying a P2MP PW . . . . . . . . . . . . . . . . . . . .   3
     4.1.  P2MP Pseudowire Sub-TLV . . . . . . . . . . . . . . . . .   3
   5.  Encapsulation of OAM Ping Packets . . . . . . . . . . . . . .   4
   6.  Operations  . . . . . . . . . . . . . . . . . . . . . . . . .   4
   7.  Controlling Echo Responses  . . . . . . . . . . . . . . . . .   6
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   6
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   6
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     11.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     11.2.  Informative References . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Introduction

   A Point-to-Multipoint (P2MP) Pseudowire (PW) emulates the essential
   attributes of a unidirectional P2MP Telecommunications service such
   as P2MP ATM over PSN.  Requirements for P2MP PW are described in
   [RFC7338].  P2MP PWs are carried over P2MP MPLS LSP.  The Procedures
   for P2MP PW signaling using BGP are described in [RFC7117] and LDP
   for single segment P2MP PWs are described in [I-D.ietf-pals-p2mp-pw].
   Many P2MP PWs can share the same P2MP MPLS LSP and this arrangement
   is called Aggregate P-tree.  The aggregate P2MP trees require an
   upstream assigned label so that on the tail of the P2MP LSP, the
   traffic can be associated with a VPN or a VPLS instance.  When a P2MP
   MPLS LSP carries only one VPN or VPLS service instance, the
   arrangement is called Inclusive P-Tree.  For Inclusive P-Trees, P2MP
   MPLS LSP label itself can uniquely identify the VPN or VPLS service
   being carried over P2MP MPLS LSP.  The P2MP MPLS LSP can also be used
   in Selective P-Tree arrangement for carrying multicast traffic.  In a
   Selective P-Tree arrangement, traffic to each multicast group in a
   VPN or VPLS instance is carried by a separate unique P-tree.  In
   Aggregate Selective P-tree arrangement, traffic to a set of multicast
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