Protocol Independent Multicast - Sparse Mode (PIM-SM) Feature Overview and Configuration Guide

PIM Sparse Mode (PIM-SM) is designed on the principle that several hosts wishing to receive a multicast stream does not justify flooding the entire internetwork with periodic multicast traffic. PIM-SM is designed to limit multicast traffic so that only those switches interested in receiving traffic for a particular group receive the traffic.

This guide provides information about two multicast protocols:

  • Protocol Independent Multicast - Sparse Mode (PIM-SM) and
  • Protocol Independent Multicast - Source Specific Multicast (PIM-SSM).

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