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.
MSDP Anycast RP Configuration
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
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.
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