Protocol Independent Multicast (PIM) sparse mode is the most common multicast protocol used on the Internet. PIM sparse mode is the default mode whenever PIM is configured on any interface of the Services Router. However, because PIM must not be configured on the network management interface of the Services Router, you must disable it on that interface.
Each any-source multicast (ASM) group has a shared tree through which receivers learn about new multicast sources and new receivers learn about all multicast sources. The rendezvous point (RP) router is the root of this shared tree and receives the multicast traffic from the source. To receive multicast traffic from the groups served by the RP, the Services Router must determine the IP address of the RP for the source.
One common way for the Services Router to locate RPs is by static configuration of the IP address of the RP. For information about alternate methods of locating RPs, see the JUNOS Multicast Protocols Configuration Guide.
To configure PIM sparse mode, disable PIM on fe-0/0/0, and configure the IP address of the RP perform these steps on each Services Router in the network:
Table 85: Configuring PIM Sparse Mode and the RP