ISIS Extensions for BIER in Non-MPLS Networks
draft-dhanaraj-bier-isis-non-mpls-extensions-00

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Internet Engineering Task Force                         S. Dhanaraj, Ed.
Internet-Draft                                                    Huawei
Intended status: Standards Track                            IJ. Wijnands
Expires: May 27, 2019                                          P. Psenak
                                                     Cisco Systems, Inc.
                                                                  G. Yan
                                                                  J. Xie
                                                                  Huawei
                                                       November 23, 2018

             ISIS Extensions for BIER in Non-MPLS Networks
            draft-dhanaraj-bier-isis-non-mpls-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].

   BIER in Ethernet encapsulation is an example of BIER encapsulation in
   non-MPLS networks.

   [RFC8401] specifies the required extensions to the IS-IS [RFC1195]
   protocol for the distribution of BIER sub-domain information
   including the Sub-sub-TLV required to support BIER in MPLS
   encapsulation for MPLS networks.

   This document specifies the required extensions to the IS-IS
   [RFC1195] 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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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any

Dhanaraj, et al.          Expires May 27, 2019                  [Page 1]
Internet-Draft    ISIS Extensions for BIER in Non-MPLS     November 2018

   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 May 27, 2019.

Copyright Notice

   Copyright (c) 2018 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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   3.  Procedure and Packet Formats  . . . . . . . . . . . . . . . .   4
     3.1.  BIER Ethernet Encapsulation Sub-sub TLV . . . . . . . . .   5
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   6
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     5.1.  IS-IS sub-sub-TLVs for BIER Info sub-TLV Registry . . . .   7
   6.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

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.  The
   common BIER header format and encapsulation for MPLS and non-MPLS
   networks is specified in [RFC8296].

   As stated in [RFC8296], the encapsulation of Initial Four Octets in
   BIER header for MPLS and non-MPLS networks are different.  In
   particular, the first 20-bits of the BIER header (referred as BIFT-

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   id) is a "MPLS Label" in case of MPLS networks and is a "domain-wide-
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