R1:ip route-static 192.168.30.0 255.255.255.0 10.10.10.2
ip route-static 192.168.40.0 255.255.255.0 10.10.10.2
R2:ip route-static 192.168.10.0 255.255.255.0 10.10.10.1
ip route-static 192.168.20.0 255.255.255.0 10.10.10.1