R2#sh run | b ip pim rp
ip pim rp-candidate Loopback0 interval 10
ip msdp peer 180.40.7.129 connect-source FastEthernet0/1
ip msdp originator-id FastEthernet0/1
!
!

!
interface Loopback0
 ip address 223.254.254.254 255.255.255.255
end

R2#

R3#sh
*Mar  1 04:55:05.752: %SYS-5-CONFIG_I: Configured from console by console
R3#sh run | b ip pim rp
ip pim rp-candidate Loopback0 interval 10
ip msdp peer 180.40.7.98 connect-source FastEthernet0/1
ip msdp originator-id FastEthernet0/1
!

!
interface Loopback0
 ip address 223.254.254.254 255.255.255.255
end

R3#