Introduction to IP Multicast Routing

Document Type Expired Internet-Draft (mboned WG)
Authors Thomas Maufer  , Chuck Semeria 
Last updated 1997-10-28
Stream IETF
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The first part of this paper describes the benefits of multicasting, the MBone, Class D addressing, and the operation of the Internet Group Management Protocol (IGMP). The second section explores a number of different techniques that may potentially be employed by multicast routing protocols: o Flooding o Spanning Trees o Reverse Path Broadcasting (RPB) o Truncated Reverse Path Broadcasting (TRPB) o Reverse Path Multicasting (RPM) o ''Shared-Tree'' Techniques The third part contains the main body of the paper. It describes how the previous techniques are implemented in multicast routing protocols available today (or under development). o Distance Vector Multicast Routing Protocol (DVMRP) o Multicast Extensions to OSPF (MOSPF) o Protocol-Independent Multicast - Dense Mode (PIM-DM) o Protocol-Independent Multicast - Sparse Mode (PIM-SM) o Core-Based Trees (CBT)


Thomas Maufer (
Chuck Semeria (

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