Tuning the Behavior of the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) for Routers in Mobile and Wireless Networks
RFC 6636
Document | Type | RFC - Informational (May 2012; No errata) | |
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Authors | Hitoshi Asaeda , Hui Liu , Qin Wu | ||
Last updated | 2015-10-14 | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6636 (Informational) | |
Action Holders |
(None)
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Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jari Arkko | ||
IESG note |
Behcet Sarikaya (sarikaya2012@gmail.com) is the document shepherd. Note: document is on the telechat 5 days before the LC ends. I'd like to complete this doc while I'm on the IESG, and handle additional last call comments (if any) in Paris IESG meeting. We'll hand it off to Brian if there's anything substantial. |
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Send notices to | (None) |
Internet Engineering Task Force (IETF) H. Asaeda Request for Comments: 6636 Keio University Category: Informational H. Liu ISSN: 2070-1721 Q. Wu Huawei May 2012 Tuning the Behavior of the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) for Routers in Mobile and Wireless Networks Abstract The Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) are the protocols used by hosts and multicast routers to exchange their IP multicast group memberships with each other. This document describes ways to achieve IGMPv3 and MLDv2 protocol optimization for mobility and aims to become a guideline for the tuning of IGMPv3/MLDv2 Queries, timers, and counter values. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. 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). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see 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/rfc6636. Asaeda, et al. Informational [Page 1] RFC 6636 Tuning the Behavior of IGMP and MLD May 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 described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................2 2. Terminology .....................................................3 3. Explicit Tracking of Membership Status ..........................3 4. Tuning IGMP/MLD Timers and Values ...............................4 4.1. Tuning the IGMP/MLD General Query Interval .................4 4.2. Tuning the IGMP/MLD Query Response Interval ................5 4.3. Tuning the Last Member Query Timer (LMQT) and Last Listener Query Timer (LLQT) ................................6 4.4. Tuning the Startup Query Interval ..........................7 4.5. Tuning the Robustness Variable .............................7 4.6. Tuning Scenarios for Various Mobile IP Networks ............7 5. Destination Address of a Specific Query .........................8 6. Interoperability ................................................9 7. Security Considerations .........................................9 8. Acknowledgements ................................................9 9. References .....................................................10 9.1. Normative References ......................................10 9.2. Informative References ....................................10 Appendix A. Unicasting a General Query ............................11 1. Introduction The Internet Group Management Protocol (IGMP) [1] for IPv4 and the Multicast Listener Discovery (MLD) [2] protocol for IPv6 are the standard protocols for hosts to initiate joining or leaving of multicast sessions. These protocols must also be supported by multicast routers or IGMP/MLD proxies [5] that maintain multicast membership information on their downstream interfaces. Conceptually, IGMP and MLD work on both wireless and mobile networks. However, wireless access technologies operate on a shared medium or a point- to-point link with limited spectrum and bandwidth. In many wireless Asaeda, et al. Informational [Page 2] RFC 6636 Tuning the Behavior of IGMP and MLD May 2012 regimes, it is desirable to minimize multicast-related signaling to preserve the limited resources of battery-powered mobile devices and the constrained transmission capacities of the networks. The motionShow full document text