BIER in IPv6 (BIERin6)
draft-zhang-bier-bierin6-04

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BIER                                                            Z. Zhang
Internet-Draft                                           ZTE Corporation
Intended status: Standards Track                           A. Przygienda
Expires: July 11, 2020                            Juniper Networks, Inc.
                                                             I. Wijnands
                                                           Cisco Systems
                                                              H. Bidgoli
                                                                   Nokia
                                                              M. McBride
                                                               Futurewei
                                                         January 8, 2020

                         BIER in IPv6 (BIERin6)
                      draft-zhang-bier-bierin6-04

Abstract

   BIER is a new architecture for the forwarding of multicast data
   packets.  This document defines native IPv6 encapsulation for BIER
   hop-by-hop forwarding or BIERin6 for short.

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.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   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 July 11, 2020.

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Copyright Notice

   Copyright (c) 2020 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.  IPv6 Header . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  IPv6 Options Considerations . . . . . . . . . . . . . . .   3
   3.  BIER Header . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  IPv6 Encapsulation Advertisement  . . . . . . . . . . . . . .   4
     4.1.  Format  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Inter-area prefix redistribution  . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .   5
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   7

1.  Introduction

   BIER [RFC8279] is a new architecture for the forwarding of multicast
   data packets.  It provides optimal forwarding through a "multicast
   domain" and it does not necessarily precondition construction of a
   multicast distribution tree, nor does it require intermediate nodes
   to maintain any per-flow state.

   This document specifies non-MPLS BIER forwarding in an IPv6 [RFC8200]
   environment, refferred to as BIERin6, using non-MPLS BIER
   encapsulation specified in [RFC8296].

   MPLS BIER forwarding in IPv6 is outside the scope of this document.

   This document uses terminology defined in [RFC8279] and [RFC8296].

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   [RFC8296] defines the BIER encapsulation format in MPLS and non-MPLS
   environment.  In case of non-MPLS environment, a BIER packet is the
   payload of an "outer" encapsulation, which has a "next protocol"
   codepoint that is set to a value that means "non-MPLS BIER".