R1 (config-if)#standby 100 ip 192.168.10.10
R1 (config-if)#standby 100 priority 110
R1 (config-if)#standby 100 preempt
R1 (config-if)#standby 100 track e0/1 20
R1 (config)#inter e0/1
R1 (config-if)#standby 200 ip 192.168.20.20
R1 (config-if)#standby 200 preempt
R2 (config-if)#standby 100 ip 192.168.10.10
R2 (config-if)#standby 100 preempt
R2 (config)#inter e0/1
R2 (config-if)#standby 200 ip 192.168.20.20
R2 (config-if)#standby 200 priority 110
R2 (config-if)#standby 200 preempt
R2 (config-if)#standby 200 track e0/0 20