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RFC 3913
Title: Border Gateway Multicast Protocol (BGMP):
Protocol Specification
Author(s): D. Thaler
Status: Informational
Date: September 2004
Mailbox: dthaler@microsoft.com
Pages: 41
Characters: 97443
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-bgmp-spec-06.txt
URL: ftp://ftp.rfc-editor.org/in-notes/rfc3913.txt
This document describes the Border Gateway Multicast Protocol (BGMP),
a protocol for inter-domain multicast routing. BGMP builds shared
trees for active multicast groups, and optionally allows receiver
domains to build source-specific, inter-domain, distribution branches
where needed. BGMP natively supports "source-specific multicast"
(SSM). To also support "any-source multicast" (ASM), BGMP requires
that each multicast group be associated with a single root (in BGMP it
is referred to as the root domain). It requires that different ranges
of the multicast address space are associated (e.g., with
Unicast-Prefix-Based Multicast addressing) with different domains.
Each of these domains then becomes the root of the shared domain-trees
for all groups in its range. Multicast participants will generally
receive better multicast service if the session initiator's address
allocator selects addresses from its own domain's part of the space,
thereby causing the root domain to be local to at least one of the
session participants.
This document is a product of the Border Gateway Multicast Protocol
Working Group of the IETF.
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
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Authors, for further information.
Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute
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