Configuring Basic PIM-SM Functions

Ensure that unicast routes are reachable before configuring IPv4 multicast routing and enable PIM-SM on each interface of the multicast device. Configure static or dynamic Rendezvous Point (RP) so that the PIM-SM network can work normally.

Enabling IP Multicast Routing: Prior to configuring all IPv4 multicast features, enable IPv4 multicast routing.

Enabling Basic PIM-SM Functions: An interface can set up PIM neighbor relationship with other devices after PIM-SM is enabled on it.

Configuring a Static RP: When only one Rendezvous Point (RP) exists in the network, you can manually configure a static RP rather than a dynamic RP. This can save the bandwidth occupied by message exchange between the Candidate-RP (C-RP) and the BootStrap router (BSR). The configurations about the static RP should be the same on all the devices in a PIM-SM domain.

Configuring a Dynamic RP: In a PIM-SM domain, you can select several PIM devices and configure Candidate-RPs (C-RPs) on the devices. Then, a Rendezvous Point (RP) is elected from these C-RPs. The Candidate-BSRs (C-BSRs) should also be configured and a BootStrap router (BSR) is elected from these C-BSRs. The BSR is responsible for collecting and advertising the C-RP information on the network. The system supports the auto-RP listening function.

(Optional) Configuring the SSM Group Address Range: The default Source-Specific Multicast (SSM) group address range is 232.0.0.0/8. You can manually configure the SSM group address range. Ensure that the SSM group address ranges configured on all devices in the network are identical.