LSR Extensions for BIER over Ethernet
draft-dhanaraj-bier-lsr-ethernet-extensions-00

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Last updated 2019-01-29
Replaces draft-dhanaraj-bier-isis-non-mpls-extensions
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Internet Engineering Task Force                         S. Dhanaraj, Ed.
Internet-Draft                                                    Huawei
Updates: 8296 (if approved)                                 IJ. Wijnands
Intended status: Standards Track                               P. Psenak
Expires: August 2, 2019                              Cisco Systems, Inc.
                                                                Z. Zhang
                                                       Juniper Networks.
                                                                  G. Yan
                                                                  J. Xie
                                                                  Huawei
                                                        January 29, 2019

                 LSR Extensions for BIER over Ethernet
             draft-dhanaraj-bier-lsr-ethernet-extensions-00

Abstract

   Bit Index Explicit Replication (BIER) [RFC8279] is an architecture
   that provides multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain multicast related per-flow
   state.  BIER can be supported in MPLS and non-MPLS networks.  The
   common BIER header format and encapsulation for MPLS and non-MPLS
   networks is specified in [RFC8296].

   This document specifies the required extensions to the IS-IS
   [RFC1195] and OSPFv2 [RFC2328] protocol for supporting BIER in non-
   MPLS networks using BIER in Ethernet encapsulation.

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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   This Internet-Draft will expire on August 2, 2019.

Dhanaraj, et al.         Expires August 2, 2019                 [Page 1]
Internet-Draft    LSR Extensions for BIER over Ethernet     January 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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   5
   3.  Specification . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  IS-IS BIER Ethernet Encapsulation Sub-sub TLV . . . . . .   5
     3.2.  OSPFv2 BIER Ethernet Encapsulation Sub-TLV  . . . . . . .   6
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  IS-IS sub-sub-TLVs for BIER Info sub-TLV Registry . . . .   8
     5.2.  OSPFv2 Extended Prefix TLV Sub-TLVs Registry  . . . . . .   8
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   9
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Bit Index Explicit Replication (BIER) [RFC8279] is an architecture
   that provides multicast forwarding through a "BIER domain" without
   requiring intermediate routers to maintain multicast related per-flow
   state.  BIER can be supported in MPLS and non-MPLS networks.

   [RFC8296] specifies a common BIER header format for both MPLS and
   non-MPLS networks, though the first 20-bits of the BIER header
   (referred as BIFT-id) is a "MPLS Label" in case of MPLS networks and
   is a "domain-wide-unique-value" representing the combination of SD-
   BSL-SI in case of non-MPLS networks.
   [I-D.ietf-bier-non-mpls-bift-encoding] specifies two optional ways of
   statically assigning domain-wide-unique mapping between BIFT-IDs and
   SD-BSL-SI combination.

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