Enabling PIM on an Interface

Enabling PIM on an Interface
PIM is one of the required elements for multicast configuration. It enables IGMP on the router
and enables it to receive and forward traffic on the specified interface. PIM must be enabled on
every interface that is to participate in the multicast network.
PIM interface configuration has many options. Take a look at the available options in
IOS 12.0(10)S1, shown in Table 19.2. Most of these options are for advanced multicast configuration
that won’t be addressed in detail here. The options that are discussed are dense-mode,
sparse-mode, and sparse-dense-mode.