hi, Update 1 - normally, you cannot duplicate L3 connectivity with IP addresses unless you use NAT. in this case you can use NAT for each device. this is only suggestion.    you need separate router's for each devices and create Virtual NAT range (different networks which are not available on your network) for each device.  connect all routers to 1 another router and do correct routing. in this case you need to have different IP range for main PC too. if you need to have same range with devices, you can do another virtual NAT in main router too. this is possible technically, but not feasible for non branch network   Update 2-  also you may be able to use VRF with 1 router. needs some good guidance. because i am not very good in VRF :)     ... View more

Hi,   this is bit strange situation. i have few clarifications, 1 - how your application identifies each device separately if using same IP? (may be that is not a concern) 2 - what is the IP address of communicating common PC? is it in same network?     ... View more