Configuring the Interface Address of an RP
Before configuring anycast Rendezvous Point (RP) on the devices in a PIM-SM domain, configure a loopback interface on each device and assign the same IP address to the loopback interfaces. In addition, advertise the IP address of the RP through unicast routes to ensure that each device has a reachable route to the RP interface.
Context
Use a unicast routing protocol in the current network to advertise the address of the newly configured RP interface. Ensure that all FWs in the network have a route to the RP.
In the PIM-SM domain, do as follows on multiple FWs on which the anycast RP is to be configured:
Procedure
- Access the system view.
- Access the loopback interface view.
interface loopback interface-number
Multiple RPs can use the same IP address in a network. The RPs, therefore, are configured on the loopback interface.
- Set an address for the loopback interface.
ip address ip-address { mask | mask-length }
The parameters of the command are explained as follows:
- ip-address: specifies the address of an RP. The RPs configured on multiple devices use the same IP address.
- mask | mask-length: specifies the address mask of the loopback interface.
- Enable PIM-SM for the RP interface.
Before configuring a dynamic RP, you need to run this command. This command is not required when you configure a static RP.