R1(config)# interface FastEthernet 0/1 R1(config-if)# description VERS_LAN R1(config-if)# ip address 192.168.10.254 255.255.255.0 R1(config-if)# exit R1(config)# interface FastEthernet 0/2 R1(config-if)# description VERS_R2 R1(config-if)# ip address 192.168.30.1 255.255.255.0 R1(config-if)# exit R1(config)# interface tunnel 1 R1(config-if)# description TUNNEL R1(config-if)# ip address 1.1.10.1 255.255.255.248 R1(config-if)# tunnel source 192.168.30.1 R1(config-if)# tunnel destination 192.168.40.1 R1(config-if)# exit R1(config)# ip route 192.168.20.0 255.255.255.0 1.1.10.2
R1(config)# ip route 192.168.40.0 255.255.255.0 192.168.30.2
R2(config)# interface FastEthernet 0/1 R2(config-if)# description VERS_R1 R2(config-if)# ip address 192.168.10.254 255.255.255.0 R2(config-if)# exit R2(config)# interface FastEthernet 0/2 R2(config-if)# description VERS_R3 R2(config-if)# ip address 192.168.30.1 255.255.255.0 R2(config-if)# exit
R3(config)# interface FastEthernet 0/1 R3(config-if)# description VERS_LAN R3(config-if)# ip address 192.168.20.254 255.255.255.0 R3(config-if)# exit R3(config)# interface FastEthernet 0/2 R3(config-if)# description VERS_R2 R3(config-if)# ip address 192.168.30.1 255.255.255.0 R3(config-if)# exit R3(config)# interface tunnel 1 R3(config-if)# description TUNNEL R3(config-if)# ip address 1.1.10.2 255.255.255.248 R3(config-if)# tunnel source 192.168.40.1 R3(config-if)# tunnel destination 192.168.30.1 R3(config-if)# exit R3(config)# ip route 192.168.10.0 255.255.255.0 1.1.10.1
R3(config)# ip route 192.168.30.0 255.255.255.0 192.168.40.2