BGP Link-State extensions for BIER
draft-ietf-bier-bgp-ls-bier-ext-02

The information below is for an old version of the document
Document Type Expired Internet-Draft (bier WG)
Last updated 2018-08-12 (latest revision 2018-02-08)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-ietf-bier-bgp-ls-bier-ext-02.txt

Abstract

Bit Index Explicit Replication (BIER) is an architecture that provides optimal multicast forwarding through a "BIER domain" without requiring intermediate routers to maintain any multicast related per- flow state. BIER also does not require any explicit tree-building protocol for its operation. A multicast data packet enters a BIER domain at a "Bit-Forwarding Ingress Router" (BFIR), and leaves the BIER domain at one or more "Bit-Forwarding Egress Routers" (BFERs). The BFIR router adds a BIER header to the packet. The BIER header contains a bitstring in which each bit represents exactly one BFER to forward the packet to. The set of BFERs to which the multicast packet needs to be forwarded is expressed by setting the bits that correspond to those routers in the BIER header. This document specifies extensions to the BGP Link-state address- family in order to advertising BIER information.

Authors

Ran Chen (chen.ran@zte.com.cn)
Zheng Zhang (zhang.zheng@zte.com.cn)
Vengada Govindan (venggovi@cisco.com)
IJsbrand Wijnands (ice@cisco.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)