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Lightweight Internet Group Management Protocol Version 3 (IGMPv3) and Multicast Listener Discovery Version 2 (MLDv2) Protocols
RFC 5790

Internet Engineering Task Force (IETF)                            H. Liu
Request for Comments: 5790                                        W. Cao
Category: Standards Track                            Huawei Technologies
ISSN: 2070-1721                                                H. Asaeda
                                                         Keio University
                                                           February 2010

 Lightweight Internet Group Management Protocol Version 3 (IGMPv3) and
        Multicast Listener Discovery Version 2 (MLDv2) Protocols

Abstract

   This document describes lightweight IGMPv3 and MLDv2 protocols (LW-
   IGMPv3 and LW-MLDv2), which simplify the standard (full) versions of
   IGMPv3 and MLDv2.  The interoperability with the full versions and
   the previous versions of IGMP and MLD is also taken into account.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc5790.

Copyright Notice

   Copyright (c) 2010 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
   described in the Simplified BSD License.

Liu, et al.                  Standards Track                    [Page 1]
RFC 5790              Lightweight IGMPv3 and MLDv2         February 2010

   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
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................4
   3. Simplification Method Overview ..................................4
      3.1. Behavior of Group Members ..................................5
      3.2. Behavior of Multicast Routers ..............................5
   4. LW-IGMPv3 Protocol for Group Members ............................6
      4.1. Query and Report Messages ..................................6
      4.2. Action on Change of Interface State ........................6
      4.3. Action on Reception of a Query .............................7
      4.4. LW-IGMPv3 Group Record Types ...............................7
   5. LW-IGMPv3 Protocol for Multicast Routers ........................9
      5.1. Group Timers and Source Timers in the Lightweight Version ..9
      5.2. Source-Specific Forwarding Rules ..........................10
      5.3. Reception of Current-State Records ........................10
      5.4. Reception of Source-List-Change and
           Filter-Mode-Change Records ................................12
   6. Interoperability ...............................................13
      6.1. Interoperation with the Full Version of IGMPv3/MLDv2 ......13
           6.1.1. Behavior of Group Members ..........................13
           6.1.2. Behavior of Multicast Routers ......................13
      6.2. Interoperation with IGMPv1/IGMPv2 .........................14
           6.2.1. Behavior of Group Members ..........................14
           6.2.2. Behavior of Multicast Routers ......................14
      6.3. Interoperation with MLDv1 .................................15
   7. Implementation Considerations ..................................15
      7.1. Implementation of Source-Specific Multicast ...............15

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