BGP Extensions for BIER
draft-ietf-bier-idr-extensions-03

Document Type Active Internet-Draft (bier WG)
Last updated 2017-08-08
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Network Working Group                                         X. Xu, Ed.
Internet-Draft                                                   M. Chen
Intended status: Standards Track                                  Huawei
Expires: February 9, 2018                                 K. Keyur Patel
                                                            Arrcus, Inc.
                                                             I. Wijnands
                                                                   Cisco
                                                           A. Przygienda
                                                                 Juniper
                                                          August 8, 2017

                        BGP Extensions for BIER
                   draft-ietf-bier-idr-extensions-03

Abstract

   Bit Index Explicit Replication (BIER) is a new multicast forwarding
   architecture which doesn't require an explicit tree-building protocol
   and doesn't require intermediate routers to maintain any multicast
   state.  BIER is applicable in a multi-tenant data center network
   environment for efficient delivery of Broadcast, Unknown-unicast and
   Multicast (BUM) traffic while eliminating the need for maintaining a
   huge amount of multicast state in the underlay.  This document
   describes BGP extensions for advertising the BIER-specific
   information.  These extensions are applicable in those multi-tenant
   data centers where BGP instead of IGP is deployed as an underlay for
   network reachability advertisement.  These extensions may also be
   applicable in other scenarios.

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."

   This Internet-Draft will expire on February 9, 2018.

Xu, et al.              Expires February 9, 2018                [Page 1]
Internet-Draft           BGP Extensions for BIER             August 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
   Provisions Relating to IETF Documents
   (http://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
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  BIER Path Attribute . . . . . . . . . . . . . . . . . . . . .   3
   4.  Originating BIER Attribute  . . . . . . . . . . . . . . . . .   4
   5.  Restrictions on Sending/Receiving . . . . . . . . . . . . . .   5
   6.  Deployment Considerations . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   6
     10.2.  Informative References . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   Bit Index Explicit Replication (BIER) [I-D.ietf-bier-architecture] is
   a new multicast forwarding architecture which doesn't require an
   explicit tree-building protocol and doesn't require intermediate
   routers to maintain any multicast state.  BIER is applicable in a
   multi-tenant data center network environment for efficient delivery
   of Broadcast, Unknown-unicast and Multicast (BUM) traffic while
   eliminating the need for maintaining a huge amount of multicast state
   in the underlay [I-D.ietf-bier-use-cases].  This document describes
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