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The Internet Multicast Address Allocation Architecture (RFC2908)

IP.com Disclosure Number: IPCOM000005090D
Original Publication Date: 2000-Sep-01
Included in the Prior Art Database: 2001-Aug-15
Document File: 14 page(s) / 31K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Thaler: AUTHOR [+3]

Abstract

This document proposes a multicast address allocation architecture (MALLOC) for the Internet. The architecture is modular with three layers, comprising a host-server mechanism, an intra-domain server- server coordination mechanism, and an inter-domain mechanism.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 11% of the total text.

Network Working Group D. Thaler Request for Comments: 2908 Microsoft Category: Informational M. Handley

ACIRI D. Estrin

ISI September 2000

The Internet Multicast Address Allocation Architecture

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2000). All Rights Reserved.

Abstract

This document proposes a multicast address allocation architecture (MALLOC) for the Internet. The architecture is modular with three layers, comprising a host-server mechanism, an intra-domain server- server coordination mechanism, and an inter-domain mechanism.

Table of Contents

1: Introduction ................................................ 2 2: Requirements ................................................ 2 3.1: Address Dynamics .......................................... 4 3: Overview of the Architecture ................................ 5 4: Scoping ..................................................... 7 4.1: Allocation Scope .......................................... 8 4.1.1: The IPv4 Allocation Scope 239.251.0.0/16 ............. 9 4.1.2: The IPv6 Allocation Scope SCOP 6 ..................... 9 5: Overview of the Allocation Process .......................... 9 6: Security Considerations ..................................... 10 7: Acknowledgments ............................................. 11 8: References .................................................. 11 9: Authors' Addresses .......................................... 12 10: Full Copyright Statement ................................... 13

Thaler, et al. Informational [Page 1]

RFC 2908 MALLOC Architecture September 2000

1. Introduction

This document proposes a multicast address allocation architecture (MALLOC) for the Internet, and is intended to be generic enough to apply to both IPv4 and IPv6 environments.

As with unicast addresses, the usage of any given multicast address is limited in two dimensions:

Lifetime: An address has a start time and a (possibly infinite) end time, between which it is valid.

Scope: An address is valid over a specific area of the network. For example, it may be globally valid and unique, or it may be a private address which is valid only within a local area.

This architecture assumes that the primary scoping mechanism in use is administrative scoping, as described in RFC 2365 [1]. While solutions that work for TTL scoping are possible, they introduce significant additional complication for address allocation [2]. Moreover, TTL scoping is a poor solution for multicast scope control, and our assumption is that usage of TTL scoping will decline before this architecture is widely used.

2. Requirements

From a design point of view, the important propertie...