2pcs on each side connected with switch and both switch to a router
Left 2 pcs:
A has ip 192.168.1.2 sub 255.255.255.0
B has ip 192.168.1.13 sub 255.255.255.0
both Gateway is 192.168.1.1
Right pcs
C has ip 192.168.2.2 sub 255.255.255.0
D has ip 192....