A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Multicast Scoped Address Assignment Guidance
Author(s) : R. Pashby
Filename : draft-pashby-ipv6-mc-scoped-addr-00.txt
Pages :
Date : 2005-7-14
The purpose of this document is to define IPv6 Multicast Id ranges
that will not allow overlap between dynamically assigned global
scoped addresses and dynamically assigned non-global scoped
addresses, specifically dynamically assigned link-local scoped
addresses.
[RFC3307] defines IPv6 Multicast Group ID ranges for the following
Permanent Addresses, Permanent Identifiers and Dynamic Addresses.
However, there are certain multicast addresses that need to be
assigned for closed systems that should not collide with the Group
IDs used within the Internet.
This document further defines the Dynamic Addresses into two ranges
Dynamically Assigned Global (DAG) addresses and Dynamically
Assigned Non-Global (DANG) addresses. The DANG range is further
broken down to Dynamically Assigned Link-Local (DALL) addresses and
the rest reserved for future. Future uses might be for Site-Local
Scoped and Organization Scoped ranges. The DALL range may be used
to simplify the design of MLD Snooping layer 2 switches.
[RFC3171] defines the Local Network Control Block address range for
IPv4. A similar range should be defined to possibly simplify the
design of MLD Snooping layer 2 switches.
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