Multicast VPN Using BIER
draft-ietf-bier-mvpn-07

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Internet Engineering Task Force                            E. Rosen, Ed.
Internet-Draft                                    Juniper Networks, Inc.
Intended status: Experimental                               M. Sivakumar
Expires: January 27, 2018                            Cisco Systems, Inc.
                                                               S. Aldrin
                                                            Google, Inc.
                                                             A. Dolganow
                                                                   Nokia
                                                           T. Przygienda
                                                  Juniper Networks, Inc.
                                                           July 26, 2017

                        Multicast VPN Using BIER
                        draft-ietf-bier-mvpn-07

Abstract

   The Multicast Virtual Private Network (MVPN) specifications require
   the use of multicast tunnels ("P-tunnels") that traverse a Service
   Provider's backbone network.  The P-tunnels are used for carrying
   multicast traffic across the backbone.  A variety of P-tunnel types
   are supported.  Bit Index Explicit Replication (BIER) is a new
   architecture that provides optimal multicast forwarding through a
   "multicast domain", without requiring intermediate routers to
   maintain any per-flow state or to engage in an explicit tree-building
   protocol.  This document specifies the protocol and procedures that
   allow MVPN to use BIER as the method of carrying multicast traffic
   over an SP backbone network.

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/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   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 January 27, 2018.

Rosen, et al.           Expires January 27, 2018                [Page 1]
Internet-Draft               MVPN with BIER                    July 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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Use of the PMSI Tunnel Attribute in x-PMSI A-D Routes . . . .   5
     2.1.  MPLS Label  . . . . . . . . . . . . . . . . . . . . . . .   6
     2.2.  Explicit Tracking . . . . . . . . . . . . . . . . . . . .   8
       2.2.1.  Using the LIR Flag  . . . . . . . . . . . . . . . . .   9
       2.2.2.  Using the LIR-pF Flag . . . . . . . . . . . . . . . .   9
   3.  Use of the PMSI Tunnel Attribute in Leaf A-D routes . . . . .  10
   4.  Data Plane  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     4.1.  Encapsulation and Transmission  . . . . . . . . . . . . .  11
     4.2.  Disposition . . . . . . . . . . . . . . . . . . . . . . .  12
       4.2.1.  At a BFER that is an Egress PE  . . . . . . . . . . .  13
       4.2.2.  At a BFER that is a P-tunnel Segmentation Boundary  .  13
   5.  Contributor Addresses . . . . . . . . . . . . . . . . . . . .  13
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  14
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   [RFC6513] and [RFC6514] specify the protocols and procedures that a
   Service Provider (SP) can use to provide Multicast Virtual Private
   Network (MVPN) service to its customers.  Multicast tunnels are
   created through an SP's backbone network; these are known as
   "P-tunnels".  The P-tunnels are used for carrying multicast traffic