BIER Flooding Mechanism
draft-zhang-bier-flooding-00

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BIER WG                                                     Zheng. Zhang
Internet-Draft                                              BenChong. Xu
Intended status: Standards Track                         ZTE Corporation
Expires: April 3, 2018                                September 30, 2017

                        BIER Flooding Mechanism
                    draft-zhang-bier-flooding-00.txt

Abstract

   This document introduces a method to flood BIER information in hybrid
   network to build BIER forwarding plane.

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 April 3, 2018.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
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Zhang & Xu                Expires April 3, 2018                 [Page 1]
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Table of Contents

   1.  Problem Statement . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Solution  . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     2.1.  Scheduled Update  . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Triggered Update  . . . . . . . . . . . . . . . . . . . .   4
   3.  Message Format  . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  PFM message . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  BIER information TLV  . . . . . . . . . . . . . . . . . .   5
     3.3.  BIER MPLS Encapsulation sub-TLV . . . . . . . . . . . . .   6
     3.4.  Optional BIER sub-domain BSL conversion sub-TLV . . . . .   7
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   6.  Normative References  . . . . . . . . . . . . . . . . . . . .   7
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1.  Problem Statement

   Some networks have been deployed widely are hybrid networks.  There
   are different dynamic routing protocols running in the hybrid
   networks.  Multicast services can also be provided in these kinds of
   networks because of the protocol independent feature of PIM.

   BIER [I-D.ietf-bier-architecture] provides a new architecture for the
   forwarding of multicast data packets.  It does not require a protocol
   for explicitly building multicast distribution trees, nor does it
   require intermediate nodes to maintain any per-flow state.
   [I-D.ietf-bier-isis-extensions] and
   [I-D.ietf-bier-ospf-bier-extensions] are good at establishing BIER
   forwarding plane in network which uses OSPF or IS-IS as BIER underlay
   protocol.

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