On the DC Building "cs2" config router vrrp vlan 1834 name dc-cs-vm1net ip address 172.19.34.1/25 ip helper-address 129.97.15.253 ip helper-address 129.97.128.10 ip helper-address 129.97.129.10 tagged trk1 forbid trk2,trk3 vrrp vrid 252 owner virtual-ip-address 172.19.34.1/25 enable vlan 1834 ip ospf area 4 write memory logout On the DC Building "cs1" config router vrrp vlan 1834 name dc-cs-vm1net ip address 172.19.34.2/25 ip helper-address 129.97.15.253 ip helper-address 129.97.128.10 ip helper-address 129.97.129.10 tagged trk1 forbid trk3 vrrp vrid 252 backup virtual-ip-address 172.19.34.1/25 enable vlan 1834 ip ospf area 4 write memory logout