BGP Based Multicast
draft-zzhang-bess-bgp-multicast-01

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BESS                                                            Z. Zhang
Internet-Draft                                          Juniper Networks
Intended status: Standards Track                                K. Patel
Expires: September 14, 2017                                       Arrcus
                                                             I. Wijnands
                                                           Cisco Systems
                                                                A. Gulko
                                                         Thomson Reuters
                                                          March 13, 2017

                          BGP Based Multicast
                   draft-zzhang-bess-bgp-multicast-01

Abstract

   This document specifies a BGP address family and related procedures
   that allow BGP to be used for setting up multicast distribution
   trees.  This document also specifies procedures that enable BGP to be
   used for multicast source discovery, and for showing interest in
   receiving particular multicast flows.  Taken together, these
   procedures allow BGP to be used as a replacement for other multicast
   routing protocols, such as PIM or mLDP.  The BGP procedures specified
   here are based on the BGP multicast procedures that were originally
   designed for use by providers of Multicast Virtual Private Network
   service.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC2119.

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
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   material or to cite them other than as "work in progress."

Zhang, et al.          Expires September 14, 2017               [Page 1]
Internet-Draft                  bgp-mcast                     March 2017

   This Internet-Draft will expire on September 14, 2017.

Copyright Notice

   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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Motivation  . . . . . . . . . . . . . . . . . . . . . . .   3
       1.1.1.  Native/unlabeled Multicast  . . . . . . . . . . . . .   3
       1.1.2.  Labeled Multicast . . . . . . . . . . . . . . . . . .   4
     1.2.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   4
       1.2.1.  (x,g) Multicast . . . . . . . . . . . . . . . . . . .   4
         1.2.1.1.  Source Discovery for ASM  . . . . . . . . . . . .   5
         1.2.1.2.  ASM Shared-tree-only Mode . . . . . . . . . . . .   6
         1.2.1.3.  Integration with BGP-MVPN . . . . . . . . . . . .   6
       1.2.2.  BGP Inband Signaling for mLDP Tunnel  . . . . . . . .   7
       1.2.3.  BGP Sessions  . . . . . . . . . . . . . . . . . . . .   7
       1.2.4.  LAN and Parallel Links  . . . . . . . . . . . . . . .   8
       1.2.5.  Transition  . . . . . . . . . . . . . . . . . . . . .   9
   2.  Specification . . . . . . . . . . . . . . . . . . . . . . . .   9
     2.1.  BGP NLRIs and Attributes  . . . . . . . . . . . . . . . .   9
       2.1.1.  S-PMSI A-D Route  . . . . . . . . . . . . . . . . . .  10
       2.1.2.  Leaf A-D Route  . . . . . . . . . . . . . . . . . . .  11
       2.1.3.  Source Active A-D Route . . . . . . . . . . . . . . .  12
       2.1.4.  S-PMSI A-D Route for C-multicast mLDP . . . . . . . .  12
       2.1.5.  Session Address Extended Community  . . . . . . . . .  12
     2.2.  Procedures  . . . . . . . . . . . . . . . . . . . . . . .  13
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