Population Count Extensions to PIM
draft-ietf-pim-pop-count-05

The information below is for an old version of the document
Document Type Active Internet-Draft (pim WG)
Authors Dino Farinacci  , Greg Shepherd  , Yiqun Cai  , Stig Venaas 
Last updated 2012-04-03 (latest revision 2012-01-05)
Replaces draft-farinacci-pim-pop-count
Stream IETF
Intended RFC status Experimental
Formats pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd None
IESG IESG state AD Evaluation::Revised I-D Needed
Consensus Boilerplate Unknown
Telechat date
Responsible AD Adrian Farrel
IESG note Mike McBride (mmcbride7@gmail.com) is the document shepherd.
Send notices to pim-chairs@tools.ietf.org, draft-ietf-pim-pop-count@tools.ietf.org
Network Working Group                                     Dino Farinacci
Internet-Draft                                             Greg Shepherd
Intended status: Experimental                                  Yiqun Cai
Expires: July 8, 2012                                        Stig Venaas
                                                           cisco Systems
                                                         January 5, 2012

                   Population Count Extensions to PIM
                    draft-ietf-pim-pop-count-05.txt

Abstract

   This specification defines a method for providing multicast
   distribution-tree accounting data.  Simple extensions to the PIM
   protocol allow a rough approximation of tree-based data in a scalable
   fashion.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on July 8, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as

Dino Farinacci, et al.    Expires July 8, 2012                  [Page 1]
Internet-Draft     Population Count Extensions to PIM       January 2012

   described in the Simplified BSD License.

Table of Contents

   1.  Requirements Notation  . . . . . . . . . . . . . . . . . . . .  3
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  New Hello TLV Pop-Count Support  . . . . . . . . . . . . . . .  5
   4.  New Pop-Count Join Attribute Format  . . . . . . . . . . . . .  6
     4.1.  Options  . . . . . . . . . . . . . . . . . . . . . . . . .  9
       4.1.1.  Link Speed Encoding  . . . . . . . . . . . . . . . . . 10
     4.2.  Example message layouts  . . . . . . . . . . . . . . . . . 11
   5.  How to use Pop-Count Encoding  . . . . . . . . . . . . . . . . 13
   6.  Implementation Approaches  . . . . . . . . . . . . . . . . . . 14
   7.  Caveats  . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 16
   9.  Security Considerations  . . . . . . . . . . . . . . . . . . . 17
   10. Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 18
   11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 19
     11.1. Normative References . . . . . . . . . . . . . . . . . . . 19
     11.2. Informative References . . . . . . . . . . . . . . . . . . 19
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 20

Dino Farinacci, et al.    Expires July 8, 2012                  [Page 2]
Internet-Draft     Population Count Extensions to PIM       January 2012

1.  Requirements Notation

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

Dino Farinacci, et al.    Expires July 8, 2012                  [Page 3]
Internet-Draft     Population Count Extensions to PIM       January 2012

2.  Introduction

   This draft proposes a mechanism to convey accounting information
   using the PIM protocol [RFC4601] [RFC5015].  Putting the mechanism in
   PIM allows efficient distribution and maintenance of such accounting
   information.  Previous mechanisms require data to be correlated from
   multiple router sources.

   This proposal allows a single router to be queried to obtain
   accounting and statistic information for a multicast distribution
   tree as a whole or any distribution sub-tree downstream from a
   queried router.  The amount of information is fixed and does not
   increase as multicast membership, tree diameter, or branching
   increase.

   The sort of accounting data this draft provides, on a per multicast
Show full document text