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Bit Index Explicit Replication (BIER) Support via IS-IS

Approval announcement
Draft of message to be sent after approval:


From: The IESG <>
To: IETF-Announce <>
Cc: The IESG <>,, Hooman Bidgoli <>,,,,,
Subject: Protocol Action: 'BIER support via ISIS' to Proposed Standard (draft-ietf-bier-isis-extensions-11.txt)

The IESG has approved the following document:
- 'BIER support via ISIS'
  (draft-ietf-bier-isis-extensions-11.txt) as Proposed Standard

This document is the product of the Bit Indexed Explicit Replication Working

The IESG contact persons are Alvaro Retana, Martin Vigoureux and Deborah

A URL of this Internet Draft is:

Ballot Text

Technical Summary

This draft presents extension needed for isis to advertise BIER information with in a bier domain and its subdomains. This information can be used to build a Bit Index Forwarding Table for BIER, which in order is used for forwarding multicast packets with in a BIER domain or subdomain. The ISIS extension BIER sub-tlv carries the information for BIER sub-domain that the router participates in. This sub-tlv includes multiple sub-sub-tlvs with label range and a bit string length for certain.

Working Group Summary

  The draft has been well received.   There has been discussion only recently brought to the mailing list about changing the length of
  the BAR field from 8 to 16 bits for future-proofing.  IF there is WG consensus on this, I expect an update before the IESG telechat
  and will pass the technical change through a 1 week WGLC before final approval.

Document Quality

   based on the IETF discussions there are implementation of this draft and/or strong roadmap commitment from other vendors. 


   Hooman Bidgoli is the shepherd and Alvaro Retana is the Area Director

RFC Editor Note