This chapter describes the procedures you can use to configure PIM-SM using Device Manager.
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-SM sends multicast traffic only to routers that belong to a specific multicast group and that choose to receive the traffic. PIM-SM reduces overhead costs for processing unwanted multicast packets.