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) | |
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | WG Document | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6636 (Informational) | |
| 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. |
||
| 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 motion
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