Global Table Multicast with BGP Multicast VPN (BGP-MVPN) Procedures
RFC 7716

Document Type RFC - Proposed Standard (December 2015; No errata)
Last updated 2015-12-10
Replaces draft-ietf-l3vpn-mvpn-global-table-mcast
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Thomas Morin
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IESG IESG state RFC 7716 (Proposed Standard)
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Responsible AD Alvaro Retana
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IANA IANA review state Version Changed - Review Needed
IANA action state No IC
Internet Engineering Task Force (IETF)                          Z. Zhang
Request for Comments: 7716                                   L. Giuliano
Category: Standards Track                                  E. Rosen, Ed.
ISSN: 2070-1721                                   Juniper Networks, Inc.
                                                          K. Subramanian
                                                     Cisco Systems, Inc.
                                                              D. Pacella
                                                                 Verizon
                                                           December 2015

  Global Table Multicast with BGP Multicast VPN (BGP-MVPN) Procedures

Abstract

   RFCs 6513, 6514, and others describe protocols and procedures that a
   Service Provider (SP) may deploy in order to offer Multicast Virtual
   Private Network (Multicast VPN or MVPN) service to its customers.
   Some of these procedures use BGP to distribute VPN-specific multicast
   routing information across a backbone network.  With a small number
   of relatively minor modifications, the same BGP procedures can also
   be used to distribute multicast routing information that is not
   specific to any VPN.  Multicast that is outside the context of a VPN
   is known as "Global Table Multicast", or sometimes simply as
   "Internet multicast".  In this document, we describe the
   modifications that are needed to use the BGP-MVPN procedures for
   Global Table Multicast.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7716.

Zhang, et al.                Standards Track                    [Page 1]
RFC 7716                 Global Table Multicast            December 2015

Copyright Notice

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   document authors.  All rights reserved.

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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Adapting MVPN Procedures to GTM . . . . . . . . . . . . . . .   5
     2.1.  Use of Route Distinguishers . . . . . . . . . . . . . . .   5
     2.2.  Use of Route Targets  . . . . . . . . . . . . . . . . . .   6
     2.3.  UMH-Eligible Routes . . . . . . . . . . . . . . . . . . .   8
       2.3.1.  Routes of SAFI 1, 2, or 4 with MVPN ECs . . . . . . .   9
       2.3.2.  MVPN ECs on the Route to the Next Hop . . . . . . . .   9
       2.3.3.  Non-BGP Routes as the UMH-Eligible Routes . . . . . .  11
       2.3.4.  Why SFS Does Not Apply to GTM . . . . . . . . . . . .  11
     2.4.  Inclusive and Selective Tunnels . . . . . . . . . . . . .  13
     2.5.  I-PMSI A-D Routes . . . . . . . . . . . . . . . . . . . .  13
       2.5.1.  Intra-AS I-PMSI A-D Routes  . . . . . . . . . . . . .  13
       2.5.2.  Inter-AS I-PMSI A-D Routes  . . . . . . . . . . . . .  13
     2.6.  S-PMSI A-D Routes . . . . . . . . . . . . . . . . . . . .  14
     2.7.  Leaf A-D Routes . . . . . . . . . . . . . . . . . . . . .  14
     2.8.  Source Active A-D Routes  . . . . . . . . . . . . . . . .  14
       2.8.1.  Finding the Originator of an SA A-D Route . . . . . .  14
       2.8.2.  Optional Additional Constraints on Distribution . . .  15
     2.9.  C-Multicast Source/Shared Tree Joins  . . . . . . . . . .  16
   3.  Differences from Other MVPN-Like GTM Procedures . . . . . . .  16
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  18
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .  19
     5.2.  Informative References  . . . . . . . . . . . . . . . . .  19
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .  20
   Contributors  . . . . . . . . . . . . . . . . . . . . . . . . . .  21
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