Multipoint Label Distribution Protocol In-Band Signaling in a VRF Context
draft-ietf-l3vpn-mldp-vrf-in-band-signaling-02

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Document Type Active Internet-Draft (l3vpn WG)
Last updated 2013-12-10 (latest revision 2013-11-19)
Replaces draft-wijnands-l3vpn-mldp-vrf-in-band-signaling
Stream IETF
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Network Working Group                                  IJ. Wijnands, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                              P. Hitchen
Expires: May 23, 2014                                                 BT
                                                              N. Leymann
                                                        Deutsche Telekom
                                                           W. Henderickx
                                                          Alcatel-Lucent
                                                                A. Gulko
                                                         Thomson Reuters
                                                             J. Tantsura
                                                                Ericsson
                                                       November 19, 2013

                 Multipoint Label Distribution Protocol
                   In-Band Signaling in a VRF Context
             draft-ietf-l3vpn-mldp-vrf-in-band-signaling-02

Abstract

   An IP Multicast Distribution Tree (MDT) may traverse both label
   switching (i.e. - Multi-Protocol Label Switching, or MPLS) and non-
   label switching regions of a network.  Typically the MDT begins and
   ends in non-MPLS regions, but travels through an MPLS region.  In
   such cases, it can be useful to begin building the MDT as a pure IP
   MDT, then convert it to an MPLS Multipoint Label Switched Path (MP-
   LSP) when it enters an MPLS-enabled region, and then convert it back
   to a pure IP MDT when it enters a non-MPLS-enabled region.  Other
   documents specify the procedures for building such a hybrid MDT,
   using Protocol Independent Multicast (PIM) in the non-MPLS region of
   the network, and using Multipoint Extensions to Label Distribution
   Protocol (mLDP) in the MPLS region.  This document extends those
   procedures to handle the case where the link connecting the two
   regions is a "Virtual Routing and Forwarding Table" (VRF) link, as
   defined in the "BGP IP/MPLS VPN" specifications.  However, this
   document is primarily aimed at particular use cases where VRFs are
   used to support multicast applications other than Multicast VPN.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on May 23, 2014.

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
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Conventions used in this document  . . . . . . . . . . . .  5
     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5
   2.  VRF In-band signaling for MP LSPs  . . . . . . . . . . . . . .  6
   3.  Encoding the Opaque Value of an LDP MP FEC . . . . . . . . . .  7
     3.1.  Transit VPNv4 Source TLV . . . . . . . . . . . . . . . . .  7
     3.2.  Transit VPNv6 Source TLV . . . . . . . . . . . . . . . . .  8
     3.3.  Transit VPNv4 bidir TLV  . . . . . . . . . . . . . . . . .  9
     3.4.  Transit VPNv6 bidir TLV  . . . . . . . . . . . . . . . . . 10
   4.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   5.  IANA considerations  . . . . . . . . . . . . . . . . . . . . . 11
   6.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 11
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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