OSPFv2 Extensions for Bit Index Explicit Replication (BIER)
RFC 8444

Approval announcement
Draft of message to be sent after approval:

From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Cc: The IESG <iesg@ietf.org>, bier@ietf.org, Reshad Rahman <rrahman@cisco.com>, aretana.ietf@gmail.com, rrahman@cisco.com, rfc-editor@rfc-editor.org, draft-ietf-bier-ospf-bier-extensions@ietf.org, bier-chairs@ietf.org
Subject: Protocol Action: 'OSPFv2 Extensions for BIER' to Proposed Standard (draft-ietf-bier-ospf-bier-extensions-17.txt)

The IESG has approved the following document:
- 'OSPFv2 Extensions for BIER'
  (draft-ietf-bier-ospf-bier-extensions-17.txt) as Proposed Standard

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

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

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-bier-ospf-bier-extensions/


Technical Summary

   This document describes the OSPFv2 protocol extension for Bit Index Explicit Replication (BIER) with MPLS encapsulation.

Working Group Summary

   This document was presented and discussed at IETF91, IETF92 and IETF95.
   There were discussions on whether there was a mismatch with an example in the 
   MPLS encapsulation draft, that was resolved by clarifying the text in that draft. The discussions on 
  IPv6 support resulted in the decision to do a separate document for OSPFv3 BIER Extensions. 
  There was a discussion on the BIER alias regarding allowing 0 for the label range size and, with 
  WG agreement, a change was made.

  The WG is still discussing whether to change the BAR size from 8 bits to 16 (or with a type/subtype)
  for future-proofing to potentially allow interaction with an individual draft in a different WG. 
  This discussion erupted on the list well after WGLC.  IF there is clear WG consensus to make this
  change, then I will ensure a 1 week WGLC for this technical change.

Document Quality

Major vendors on the author list have working implementations or are working on the implementation 
of the extensions. Acee Lindem has done a thorough review of the document. 

Personnel

The Document Shepherd is Reshad Rahman. The Responsible Area Director is Alvaro Retana.