Messtone Devices Enables Configure, IP Helper-Adress leases IP to Remove Office via WAN Network Routers: Cooperative office router:”MAIN” Remote Office router:”REMOTE-1″ Local office-1 router:”LOCAL OFF-1″(VLAN10) Local office-2 router:”LOCAL OFF-2″(VLAN20) Switches: Cooperative office switches:”L2SW-MAIN-1″ and “L2SW-MAIN-2″ Local office switches:”L2SW-OFF-1” and “L2SW-OFF-2” Configuration of “MAIN” router at Cooperative office: Cooperative office Network topology MAIN>MAIN>enable MAIN#config t MAIN(config-if)#MAIN(config)#interface GigabitEthernet0/0 MAIN(config-if)#description LAN DHCP Server Connection MAIN(config-if)#ip address 10.68.1.2 255.255.255.0 MAIN(config-if)#ip helper-adress 10.68.10.2 MAIN(config-if)#duplex auto MAIN(config-if)#speed auto MAIN(config-if)#MAIN(config-if)#interferface Serial0/3/0 MAIN(config-if)#description Serial WAN connection to REMOTE_1 router MAIN(config-if)#ip adress 172.16.80.1 255.255.255.252 MAIN(config-if)#MAIN(comfig-if)#router eigrp 10 MAIN(config-router)#network 10.0.0.0 MAIN(config-router)#network 172.16.0.0 MAIN(config-router)#MAIN(config-router)#ip router 10.68.10.0 255.255.255.0 172.16.80.2 MAIN(config)#ip route 192.168.100.0 255.255.255.252 172.16.80.2 MAIN(config)#ip route 10.68.20.0 255.255.255.0 172.16.80.2 MAIN(config)#ip route 192.168.200.0 255.255.255.0 172.16.80.2 MAIN(config)#ip route 0.0.0.0 0.0.0.0 Serial0/3/0 MAIN(config)#