The following is a partial configuration for Router A:
hostname RouterA
!
interface ethernet 0
ip address 1.0.0.1 255.0.0.0
standby 1 ip 1.0.0.3
standby 1 priority 110
standby 1 preempt
standby 2 ip 1.0.0.4
standby 2 preempt
The following is a partial configuration for Router B:
hostname RouterB
!
interface ethernet 0
ip address 1.0.0.2 255.0.0.0
standby 1 ip 1.0.0.3
standby 1 preempt
standby 2 ip 1.0.0.4
standby 2 priority 110
standby 2 preempt