IGMP/MLD-Based Explicit Membership Tracking Function for Multicast Routers
draft-ietf-pim-explicit-tracking-00

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Last updated 2011-10-10
Replaces draft-asaeda-mboned-explicit-tracking
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PIM Working Group                                              H. Asaeda
Internet-Draft                                           Keio University
Intended status: Informational                                N. Leymann
Expires: April 12, 2012                              Deutsche Telekom AG
                                                        October 10, 2011

   IGMP/MLD-Based Explicit Membership Tracking Function for Multicast
                                Routers
                  draft-ietf-pim-explicit-tracking-00

Abstract

   This document describes the IGMP/MLD-based explicit membership
   tracking function for multicast routers.  The explicit tracking
   function is useful for accounting and contributes to saving network
   resource and fast leaves (i.e. shortened leave latency).

Status of this Memo

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

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   This Internet-Draft will expire on April 12, 2012.

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Internet-Draft    Explicit Membership Tracking Function     October 2011

   described in the Simplified BSD License.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
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   than English.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Explicit Tracking Function . . . . . . . . . . . . . . . . . .  6
     3.1.  Reducing the Number of Specific Queries  . . . . . . . . .  6
     3.2.  Shortening Leave Latencies . . . . . . . . . . . . . . . .  6
     3.3.  Considerations . . . . . . . . . . . . . . . . . . . . . .  7
   4.  Membership State Information . . . . . . . . . . . . . . . . .  9
   5.  Multicast Router Behavior  . . . . . . . . . . . . . . . . . . 10
   6.  Interoperability and Compatibility . . . . . . . . . . . . . . 11
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12
   8.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     9.1.  Normative References . . . . . . . . . . . . . . . . . . . 14
     9.2.  Informative References . . . . . . . . . . . . . . . . . . 14
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15

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1.  Introduction

   The Internet Group Management Protocol (IGMP) [2] for IPv4 and the
   Multicast Listener Discovery Protocol (MLD) [3] for IPv6 are the
   standard protocols used by listener hosts and multicast routers.
   When a host starts listening particular multicast channels, it sends
   IGMP/MLD State-Change Report messages specifying the corresponding
   channel information as the join/leave request to its upstream router
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