Complete Protocol dictionary, glossary and reference

PIM-SM: PIM Sparse Mode

PIM Sparse Mode (PIM-SM), one of Protocol Independent Multicast protocols, is for efficiently routing to multicast groups that may span wide-area (WAN and inter-domain) internets, while PIM-DM is mainly for LAN. The protocol is not dependent on any particular unicast routing protocol and is designed to support sparse groups. It uses the traditional IP multicast model of receiver-initiated membership, supports both shared and shortest-path trees and uses soft-state mechanisms to adapt to changing network conditions. It can use the route information that any routing protocol enters into the multicast Routing Information Base (RIB).

Standard Organization

IETF

Related Document

RFC 2362