# PIM-SM or PIM-SSM configuration using Enterprise Device Manager

This chapter describes the procedures you can use to configure PIM-SM or PIM-SSM.

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.