Dell switches

Separate subnets are used, so that the routing is handled correctly. Use a layer 3-capable switch and create the subnets on different VLANs. Then route the Secondary NIC on the CIC servers (10.60.0.2 and 10.60.0.3) over the WAN so that they can communicate. It is not necessary for the CIC servers to reside in the same VLAN.

To create VLANs with different subnets:

console>enable
console# configure
console(config)# vlan database
console(config-vlan)# vlan 2
console(config-vlan)# exit

With Dell, create the VLAN before giving it an IP Address in the VLAN Database:

console(config)# int vlan 2
console(config-if)# ip address 10.60.0.1 255.255.0.0
console(config)# int ethernet g24
console(config-if)# switchport access vlan 2