Use of BIER IPv6 Encapsulation (BIERv6) for Multicast VPN in IPv6 networks
draft-xie-bier-ipv6-mvpn-01

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Network Working Group                                             J. Xie
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                              M. McBride
Expires: January 2, 2020                                       Futurewei
                                                             S. Dhanaraj
                                                     Huawei Technologies
                                                                 L. Geng
                                                            China Mobile
                                                            July 1, 2019

   Use of BIER IPv6 Encapsulation (BIERv6) for Multicast VPN in IPv6
                                networks
                      draft-xie-bier-ipv6-mvpn-01

Abstract

   This draft defines the procedures and messages for using Bit Index
   Explicit Replication (BIER) for Multicast VPN Services in IPv6
   networks using the BIER IPv6 encapsulation.  It provides a migration
   path for Multicast VPN service using BIER MPLS encapsulation in MPLS
   networks to multicast VPN service using BIER IPv6 encapsulation
   (BIERv6) in IPv6 networks.

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] and
   [RFC8174].

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 https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on January 2, 2020.

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Internet-Draft                 BIERv6 MVPN                     July 2019

Copyright Notice

   Copyright (c) 2019 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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Use of PTA and Prefix-SID Attribute in x-PMSI A-D Routes  . .   4
   4.  MVPN over BIERv6 Core . . . . . . . . . . . . . . . . . . . .   4
   5.  GTM over BIERv6 Core  . . . . . . . . . . . . . . . . . . . .   7
   6.  Data Plane  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  Encapsulation of Multicast Traffic  . . . . . . . . . . .   8
     6.2.  MTU . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     6.3.  TTL . . . . . . . . . . . . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  10
     10.2.  Informative References . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Bit Index Explicit Replication (BIER) [RFC8279] is an architecture
   that provides optimal multicast forwarding without requiring
   intermediate routers to maintain any per-flow state by using a
   multicast-specific BIER header.  BIERv6 refers to the deployment of
   BIER in IPv6 networks using the BIER IPv6 encapsulation format
   defined in [I-D.xie-bier-ipv6-encapsulation].

   [I-D.ietf-spring-srv6-network-programming] introduces the Network
   programming concepts in SRv6 networks and explains how the 128-bit
   IPv6 address can be used as SRv6 SID in the format LOC:FUNCT, where
   LOC part of the SID is routable, while FUNCT part of the SID is an
   opaque identification of a local function bound to the SID.  It has

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