Multipoint Label Distribution Protocol In-Band Signaling in a VRF Context
draft-ietf-l3vpn-mldp-vrf-in-band-signaling-01

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Document Type Active Internet-Draft (l3vpn WG)
Last updated 2013-06-21
Replaces draft-wijnands-l3vpn-mldp-vrf-in-band-signaling
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Network Working Group                                  IJ. Wijnands, Ed.
Internet-Draft                                             Cisco Systems
Intended status: Standards Track                              P. Hitchen
Expires: December 23, 2013                                            BT
                                                              N. Leymann
                                                        Deutsche Telekom
                                                           W. Henderickx
                                                          Alcatel-Lucent
                                                                A. Gulko
                                                         Thomson Reuters
                                                           June 21, 2013

                 Multipoint Label Distribution Protocol
                   In-Band Signaling in a VRF Context
             draft-ietf-l3vpn-mldp-vrf-in-band-signaling-01

Abstract

   Sometimes an IP multicast distribution tree (MDT) traverses both
   MPLS-enabled and non-MPLS-enabled 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 LSP
   (Label Switched Path) 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
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any

Wijnands, et al.        Expires December 23, 2013               [Page 1]
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   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on December 23, 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

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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
     7.1.  Normative References . . . . . . . . . . . . . . . . . . . 11
     7.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12
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