Border Gateway Multicast Protocol (BGMP): Protocol Specification

Document Type Expired Internet-Draft (idmr WG)
Authors Deborah Estrin  , Dave Thaler 
Last updated 1998-11-20
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes BGMP, a protocol for inter-domain multicast routing. BGMP builds shared trees for active multicast groups, and allows receiver domains to build source-specific, inter-domain, distribution branches where needed. Building upon concepts from CBT and PIM-SM, BGMP requires that each multicast group be associated with a single root (in BGMP it is referred to as the root domain). BGMP assumes that at any point in time, different ranges of the class D space are associated (e.g., with MASC [MASC]) 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


Deborah Estrin (
Dave Thaler (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)