BIER in BABEL
draft-zhang-bier-babel-extensions-01

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Last updated 2017-06-27
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BIER WG                                                         Z. Zhang
Internet-Draft                                           ZTE Corporation
Intended status: Standards Track                           A. Przygienda
Expires: December 29, 2017                              Juniper Networks
                                                           June 27, 2017

                             BIER in BABEL
                  draft-zhang-bier-babel-extensions-01

Abstract

   BIER introduces a novel multicast architecture.  It does not require
   a signaling protocol to explicitly build multicast distribution
   trees, nor does it require intermediate nodes to maintain any per-
   flow state.

   Babel defines a distance-vector routing protocol that operates in a
   robust and efficient fashion both in wired as well as in wireless
   mesh networks.  This document defines a way to carry necessary BIER
   signaling information in Babel.

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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   This Internet-Draft will expire on December 29, 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
   publication of this document.  Please review these documents

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   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   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 . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Advertisement of BIER information . . . . . . . . . . . . . .   2
     3.1.  BIER BFR-prefix and BIER sub-TLV  . . . . . . . . . . . .   3
       3.1.1.  BIER sub-TLV  . . . . . . . . . . . . . . . . . . . .   3
     3.2.  BIER MPLS Encapsulation sub-sub-TLV . . . . . . . . . . .   3
     3.3.  Optional BIER sub-domain BSL conversion sub-sub-TLV . . .   4
   4.  Tree types and tunneling  . . . . . . . . . . . . . . . . . .   4
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   5
   8.  Normative References  . . . . . . . . . . . . . . . . . . . .   5
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   [I-D.ietf-bier-architecture] introduces a novel multicast
   architecture.  It does not require a signaling protocol to explicitly
   build multicast distribution trees, nor does it require intermediate
   nodes to maintain any per-flow state.  All procedures necessary to
   support BIER are abbreviated by the "BIER architecture" moniker in
   this document.

   [RFC6126] and [I-D.ietf-babel-rfc6126bis] define a distance-vector
   routing protocol under the name of "Babel".  Babel operates in a
   robust and efficient fashion both in ordinary wired as well as in
   wireless mesh networks.

2.  Terminology

   The terminology of this documents follows
   [I-D.ietf-bier-architecture], [RFC6126], [RFC7557] and
   [I-D.ietf-babel-rfc6126bis].

3.  Advertisement of BIER information

   In case a router is configured with BIER information, and Babel is
   the routing protocol used, such a router MAY use Babel protocol to
   announce the BIER information using the BIER sub-TLV specified below.

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3.1.  BIER BFR-prefix and BIER sub-TLV
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