This chapter describes the procedures you can use to configure PIM-SM.
You can also use the procedures in this chapter to configure PIM-SSM using Enterprise Device Manager (EDM).
Unlike dense-mode protocols, such as Distance Vector Multicast Routing Protocol (DVMRP), that initially flood multicast traffic to all routers over an entire internetwork, PIM sends multicast traffic only to routers that belong to a specific multicast group and that choose to receive the traffic. PIM reduces overhead costs for processing unwanted multicast packets.