Core Based Tree (CBT) Multicast Border Router Specification

Document Type Expired Internet-Draft (idmr WG)
Authors Anthony Ballardie  , Bradley Cain  , Zhaohui Zhang 
Last updated 1998-03-12
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
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft specifies the behaviour of a CBT multicast border router (BR). This specification assumes the use of CBTv3 - the latest CBT protocol version [3]. CBTv3 has capabilities which make CBT equally well suited for use in stub- or transit- domains; this draft describes mechanisms which enable a CBT distribution tree to span only those routers and links leading to interested receivers or receiver-domains.


Anthony Ballardie (
Bradley Cain (
Zhaohui Zhang (

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