LSR Extensions for BIER over Ethernet
draft-ietf-bier-lsr-ethernet-extensions-01

Document Type Active Internet-Draft (bier WG)
Last updated 2019-07-08
Replaces draft-dhanaraj-bier-lsr-ethernet-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: January 9, 2020                             Cisco Systems, Inc.
                                                                Z. Zhang
                                                       Juniper Networks.
                                                                  G. Yan
                                                                  J. Xie
                                                                  Huawei
                                                           July 08, 2019

                 LSR Extensions for BIER over Ethernet
               draft-ietf-bier-lsr-ethernet-extensions-01

Abstract

   Bit Index Explicit Replication (BIER) 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.

   This document specifies the required extensions to the IS-IS, OSPFv2
   and OSPFv3 protocols 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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   Drafts is at https://datatracker.ietf.org/drafts/current/.

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

   This Internet-Draft will expire on January 9, 2020.

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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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   (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 . . . . . . . . . . . . . . . . . . . . . . . . .   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  . . . . . . .   7
     3.3.  OSPFv3 BIER Ethernet Encapsulation Sub-TLV  . . . . . . .   8
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
     5.1.  IS-IS sub-sub-TLVs for BIER Info sub-TLV Registry . . . .  10
     5.2.  OSPFv2 Extended Prefix TLV Sub-TLVs Registry  . . . . . .  10
     5.3.  OSPFv3 Extended LSA Sub-TLVs Registry . . . . . . . . . .  11
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  11
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .  11
     7.2.  Informative References  . . . . . . . . . . . . . . . . .  11
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

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

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