A simple static route
In this case we have two Cisco routers (2811) and two Cisco switches (2960) and also two PCs that each of them connected to one segment with different IP addresses.
We have one static route on each router:
- Router0: 192.168.2.0/30 via 192.168.3.1
- Router1: 192.168.1.0/30 via 192.168.3.2