Allocation Guidelines for IPv6 Multicast Addresses
RFC 3307
| Document | Type | RFC - Proposed Standard (September 2002; No errata) | |
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 3307 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Allison Mankin | ||
| IESG note |
Published as RFC 3307 2002-09-04, penultimate document of malloc WG [note from Allison]. Responsible: RFC-Ed |
||
| Send notices to | (None) | ||
Network Working Group B. Haberman
Request for Comments: 3307 Consultant
Category: Standards Track August 2002
Allocation Guidelines for IPv6 Multicast Addresses
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This document specifies guidelines that must be implemented by any
entity responsible for allocating IPv6 multicast addresses. This
includes, but is not limited to, any documents or entities wishing to
assign permanent IPv6 multicast addresses, allocate dynamic IPv6
multicast addresses, and define permanent IPv6 multicast group
identifiers. The purpose of these guidelines is to reduce the
probability of IPv6 multicast address collision, not only at the IPv6
layer, but also at the link-layer of media that encode portions of
the IP layer address into the MAC layer address.
Haberman Standards Track [Page 1]
RFC 3307 IPv6 Multicast Addresses Guidelines August 2002
Table of Contents
1. Terminology.....................................................2
2. Introduction....................................................2
3. Applicability...................................................3
4. Group ID Selection Guidelines...................................3
4.1 Permanent IPv6 Multicast Addresses............................4
4.2 Permanent IPv6 Multicast Group Identifiers....................4
4.3 Dynamic IPv6 Multicast Addresses..............................4
4.3.1 Server Allocation............................................5
4.3.2 Host Allocation..............................................5
5. IANA Considerations.............................................5
6. Security Considerations.........................................6
7. Acknowledgements................................................6
8. References......................................................6
Author's Address...................................................7
Full Copyright Statement...........................................8
1. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC 2119].
The term "group ID", throughout this document, conforms to the
definition contained in [UNIMCAST], that is, the low-order 32 bits of
the IPv6 multicast address.
2. Introduction
This document specifies guidelines that MUST be implemented by any
entity responsible for allocating IPv6 multicast addresses. This
includes, but is not limited to, any documents or entities wishing to
assign permanent IPv6 multicast addresses, allocate dynamic IPv6
multicast addresses, and define permanent IPv6 multicast group
identifiers. The purpose of these guidelines is to reduce the
probability of IPv6 multicast address collision, not only at the IPv6
layer, but also at the link-layer of media that encode portions of
the IP layer address into the link-layer address.
With the current IPv6 address architecture [ADDRARCH] and the
extension to the multicast address architecture specified in
[UNIMCAST], a set of guidelines is needed for entities assigning any
flavor of IPv6 multicast addresses.
The current approach of several physical media [RFC 2464][RFC 2467]
is to map a portion of the IPv6 multicast address into a link-layer
destination address. This is accomplished by taking the low order 32
Haberman Standards Track [Page 2]
RFC 3307 IPv6 Multicast Addresses Guidelines August 2002
bits (henceforth called the group ID) of the IPv6 multicast address
and including them in the link-layer destination address. Group IDs,
less than or equal to, 32 bits long will generate unique link-layer
addresses within a given multicast scope.
These guidelines specify how the group ID of the IPv6 multicast
address are chosen and assigned. The guidelines specify several
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