Signaling Root-Initiated Point-to-Multipoint Pseudowire using LDP
draft-ietf-pals-p2mp-pw-03

Document Type Active Internet-Draft (pals WG)
Last updated 2017-06-20
Replaces draft-ietf-pwe3-p2mp-pw
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Stewart Bryant
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INTERNET-DRAFT                                         Sami Boutros(Ed.)
Intended Status: Standard Track                                   VMware

Updates: RFC7385                                     Siva Sivabalan(Ed.)
                                                           Cisco Systems

Expires: December 22, 2017                                 June 20, 2017

   Signaling Root-Initiated Point-to-Multipoint Pseudowire using LDP
                     draft-ietf-pals-p2mp-pw-03.txt

Abstract

   This document specifies a mechanism to signal Point-to-Multipoint
   (P2MP) Pseudowires (PW) tree using LDP. Such a mechanism is suitable
   for any Layer 2 VPN service requiring P2MP connectivity over an IP or
   MPLS enabled PSN. A P2MP PW established via the proposed mechanism is
   root initiated. This document updates RFC7385 by re-assigning
   reserved value 0xFF to be the wildcard transport tunnel type.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

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Copyright and License Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
 

Sivabalan & Boutros    Expires December 22, 2017                [Page 1]
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   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  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  4
   2. Signaling P2MP PW . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1 PW ingress to egress incompatibility issues  . . . . . . . .  6
     2.2 P2MP PW FEC  . . . . . . . . . . . . . . . . . . . . . . . .  6
       2.2.1 P2MP PW Upstream FEC Element . . . . . . . . . . . . . .  6
       2.2.2 P2P PW Downstream FEC Element  . . . . . . . . . . . . . 10
     2.3 Typed Wildcard FEC Format for new FEC  . . . . . . . . . . . 10
     2.4 Group ID usage . . . . . . . . . . . . . . . . . . . . . . . 11
     2.5 Generic Label TLV  . . . . . . . . . . . . . . . . . . . . . 11
   3. LDP Capability Negotiation  . . . . . . . . . . . . . . . . . . 11
   4. P2MP PW Status  . . . . . . . . . . . . . . . . . . . . . . . . 13
   5 Security Considerations  . . . . . . . . . . . . . . . . . . . . 13
   6 Acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . 13
   7  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 13
     7.1. FEC Type Name Space . . . . . . . . . . . . . . . . . . . . 13
     7.2. LDP TLV Type  . . . . . . . . . . . . . . . . . . . . . . . 14
     7.3. mLDP Opaque Value Element TLV Type  . . . . . . . . . . . . 14
     7.4. Selective Tree Interface Parameter sub-TLV Type . . . . . . 14
     7.5. WildCard PMSI tunnel type . . . . . . . . . . . . . . . . . 14
   8  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 15
     8.1. Normative References  . . . . . . . . . . . . . . . . . . . 15
     8.2. Informative References  . . . . . . . . . . . . . . . . . . 16
   Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 17

 

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INTERNET DRAFT                  P2MP PW                    June 20, 2017

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. A major difference between a Point-to-Point
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