Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)
RFC 4601

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: Internet Architecture Board <iab@iab.org>,
    RFC Editor <rfc-editor@rfc-editor.org>, 
    pim mailing list <pim@ietf.org>, 
    pim chair <pim-chairs@tools.ietf.org>
Subject: Protocol Action: 'Protocol Independent Multicast - 
         Sparse Mode (PIM-SM): Protocol Specification (Revised)' to 
         Proposed Standard 

The IESG has approved the following documents:

- 'Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol 
   Specification (Revised) '
   <draft-ietf-pim-sm-v2-new-13.txt> as a Proposed Standard
- 'PIM Sparse-Mode IETF Proposed Standard Requirements Analysis '
   <draft-ietf-pim-proposed-req-03.txt> as an Informational RFC

These documents are products of the Protocol Independent Multicast 
Working Group. 

The IESG contact persons are Alex Zinin and Ross Callon.

A URL of this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-pim-sm-v2-new-13.txt

Technical Summary

  This document specifies Protocol Independent Multicast -
  Sparse Mode (PIM-SM).  PIM-SM is a multicast routing protocol
  that can use the underlying unicast routing information base
  or a separate multicast-capable routing information base.  It
  builds unidirectional shared trees rooted at a Rendezvous
  Point (RP) per group, and optionally creates shortest-path
  trees per source.
 
Working Group Summary
 
 The WG had concensus on progressing this specification.
 
Protocol Quality
 
 Alex Zinin reviewed this specification for the IESG. There exist multiple
 interoperable implementations of the specification.