VRRP - Virtual Router Redundancy Protocol

DLS 1
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DLS1(config)# interface GigabitEthernet 0/1
DLS1(config-if)# ip address 192.168.1.2 255.255.255.0
DLS1(config-if)# vrrp 1 priority 120
DLS1(config-if)# vrrp 1 authentication password
DLS1(config-if)# vrrp 1 timers advertise 3
DLS1(config-if)# vrrp 1 timers learn
DLS1(config-if)# vrrp 1 ip 192.168.1.10
DLS1(config-if)# vrrp 5 priority 100
DLS1(config-if)# vrrp 5 timers advertise 30
DLS1(config-if)# vrrp 5 timers learn
DLS1(config-if)# vrrp 5 ip 192.168.1.50
DLS1(config-if)# vrrp 100 timers learn
DLS1(config-if)# no vrrp 100 preempt
DLS1(config-if)# vrrp 100 ip 10.1.0.100
DLS1(config-if)# no shutdown

Router B
=======

DLS2(config)# interface GigabitEthernet 0/1
DLS2(config-if)# ip address 192.168.1.1 255.255.255.0
DLS2(config-if)# vrrp 1 priority 100
DLS2(config-if)# vrrp 1 authentication password
DLS2(config-if)# vrrp 1 timers advertise 3
DLS2(config-if)# vrrp 1 timers learn
DLS2(config-if)# vrrp 1 ip 192.168.1.10
DLS2(config-if)# vrrp 5 priority 200
DLS2(config-if)# vrrp 5 timers advertise 30
DLS2(config-if)# vrrp 5 timers learn
DLS2(config-if)# vrrp 5 ip 192.168.1.50
DLS2(config-if)# vrrp 100 timers learn
DLS2(config-if)# no vrrp 100 preempt
DLS2(config-if)# vrrp 100 ip 192.168.1.100
DLS2(config-if)# no shutdown