BGP Extensions for BIER

The information below is for an old version of the document
Document Type Expired Internet-Draft (bier WG)
Authors Xiaohu Xu  , Mach Chen  , Keyur Patel  , IJsbrand Wijnands  , Tony Przygienda 
Last updated 2018-09-04 (latest revision 2018-03-03)
Stream Internet Engineering Task Force (IETF)
Expired & archived
pdf htmlized bibtex
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Stream WG state In WG Last Call
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Bit Index Explicit Replication (BIER) is a new multicast forwarding architecture which doesn't require an explicit tree-building protocol and doesn't require intermediate routers to maintain any multicast state. BIER is applicable in a multi-tenant data center network environment for efficient delivery of Broadcast, Unknown-unicast and Multicast (BUM) traffic while eliminating the need for maintaining a huge amount of multicast state in the underlay. This document describes BGP extensions for advertising the BIER-specific information. These extensions are applicable in those multi-tenant data centers where BGP instead of IGP is deployed as an underlay for network reachability advertisement. These extensions may also be applicable in other scenarios.


Xiaohu Xu (
Mach Chen (
Keyur Patel (
IJsbrand Wijnands (
Tony Przygienda (

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