How to connect two routers Method 1: Connect the LAN interface. This is relatively simple because it does not pass through the WAN interface of the B route. Do not connect to route A, connect any computer to the LAN port of route B, enter the default IP address of the route: 192.168.1.1(factory default) Enter the B route Settings, turn off the DHCP service, and then open the LAN port Settings of network parameters, change the LAN port IP address, for example, to 192.168.1.254 as long as it does not conflict with other IP addresses that have been used.