Answer as below configuration: On R2: Enable Conf t Ip route 192.168.1.0 255.255.255.0 10.10.31.1 On R1: Enable Conf t Ip route 0.0.0.0 0.0.0.0 10.10.13.3 On R2 Ip route 172.20.20.128 255.255.255.128 e0/2 Ip route 172.20.20.128 255.255.255.128 e0/1 On R1 Ip route 192.168.0.0 255.255.255.0 e0/1 Ip route 192.168.0.0 255.255.255.0 10.10.12.2 3 Save all configurations after every router from anyone of these command Do wr Or Copy run start