Here's how you configure a static route on Cisco IOS:
Router(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.1
This command says: "To reach , send packets to ."
You can also specify an exit interface:
Router(config)# ip route 10.0.0.0 255.0.0.0 GigabitEthernet0/1
Or combine both for point-to-point links:
Router(config)# ip route 10.0.0.0 255.0.0.0 GigabitEthernet0/1 192.168.1.1
For a default route, use all zeros:
Router(config)# ip route 0.0.0.0 0.0.0.0 203.0.113.1