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Introduction to IP Multicast Routing

Document Type Expired Internet-Draft (mboned WG)
Expired & archived
Authors Thomas A. Maufer , Chuck Semeria
Last updated 1997-10-28
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


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 A. Maufer
Chuck Semeria

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