Overview of the Internet Multicast Addressing Architecture
RFC 6308
Document | Type |
RFC - Informational
(June 2011; No errata)
Obsoletes RFC 2908
|
|
---|---|---|---|
Author | Pekka Savola | ||
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 6308 (Informational) | |
Action Holders |
(None)
|
||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Ron Bonica | ||
IESG note | Lenny Giuliano (lenny@juniper.net) is the Document Shepherd | ||
Send notices to | Marshall Eubanks <tme@multicasttech.com>, Hiroshi Ohta <ohta.hiroshi@lab.ntt.co.jp> |
Internet Engineering Task Force (IETF) P. Savola Request for Comments: 6308 CSC/FUNET Obsoletes: 2908 June 2011 Category: Informational ISSN: 2070-1721 Overview of the Internet Multicast Addressing Architecture Abstract The lack of up-to-date documentation on IP multicast address allocation and assignment procedures has caused a great deal of confusion. To clarify the situation, this memo describes the allocation and assignment techniques and mechanisms currently (as of this writing) in use. 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/rfc6308. Copyright Notice Copyright (c) 2011 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. Savola Informational [Page 1] RFC 6308 Multicast Address Allocation June 2011 Table of Contents 1. Introduction ....................................................2 1.1. Terminology: Allocation or Assignment ......................3 2. Multicast Address Allocation ....................................3 2.1. Derived Allocation .........................................3 2.1.1. GLOP Allocation .....................................4 2.1.2. Unicast-Prefix-Based Allocation .....................4 2.2. Administratively Scoped Allocation .........................5 2.3. Static IANA Allocation .....................................6 2.4. Dynamic Allocation .........................................6 3. Multicast Address Assignment ....................................6 3.1. Derived Assignment .........................................6 3.2. SSM Assignment inside the Node .............................7 3.3. Manually Configured Assignment .............................7 3.4. Static IANA Assignment .....................................7 3.4.1. Global IANA Assignment ..............................7 3.4.2. Scope-Relative IANA Assignment ......................8 3.5. Dynamic Assignments ........................................8 4. Summary and Future Directions ...................................9 4.1. Prefix Allocation ..........................................9 4.2. Address Assignment ........................................10 4.3. Future Actions ............................................11 5. Acknowledgements ...............................................11 6. IANA Considerations ............................................11 7. Security Considerations ........................................11 8. References .....................................................12 8.1. Normative References ......................................12 8.2. Informative References ....................................13 1. Introduction Good, up-to-date documentation of IP multicast is close to non-existent. Particularly, this is an issue with multicast address allocations (to networks and sites) and assignments (to hosts and applications). This problem is stressed by the fact that there exists confusing or misleading documentation on the subject [RFC2908]. The consequence is that those who wish to learn about IP multicast and how the addressing works do not get a clear view of the current situation. The aim of this document is to provide a brief overview of multicast addressing and allocation techniques. The term "addressing architecture" refers to the set of addressing mechanisms and methods in an informal manner. Savola Informational [Page 2] RFC 6308 Multicast Address Allocation June 2011Show full document text