Configuring Anycast RP

The following figure shows the mesh-group M1, which is comprised of three MSDP peers: MSDP 1, MSDP 2, and MSDP 3. MSDP 5 is connected to MSDP 1, and MSDP 4 is connected to MSDP 3; however, they are not part of the mesh-group.
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MSDP Anycast RP Configuration
../Graphics/EX_msdp_0002.svg
In the following figure, all five routers are configured with the same loopback VLAN IP address (1.1.1.1/32), and this address is configured in each router as an RP in the PIM SM domain. Three RP routers (MSDP1, MSDP2, and MSDP3) are configured in the MSDP mesh topology. The unicast routing mechanism ensures that all the non-RP routers in the domain route join requests to the closest RP router.
Note

Note

The anycast RP address must be unique to the loopback VLAN and be the same on all anycast RP peers. It must not match the router IP address, the PIM BSR address, or any other IP address used by the router or any other network device.