Connect your modem to one router, and then connect the second router to the first.
With Linksys' advanced consumer-grade routers, creating an in-home networking setup has never been more accessible to the average user. Wired or wireless, setup often takes 10 minutes or less. When you want to network several rooms or even an entire house, though, running two routers on your network behind a single broadband modem can extend your network's range--and save you money when purchasing networking equipment.
Instructions
Physical Setup
1. Unplug your broadband modem and leave it powered down. This will reset the internal configuration to the factory defaults.
2. Connect an Ethernet cable from the modem to the "WAN" or "Internet" port on the first router (router "A").
3. Connect another Ethernet cable from a "LAN" port on router "A" to the "WAN" or "Internet" port on the second router (router "B").
4. Plug in the modem's power supply, and wait until all of the status lights on the front panel are illuminated properly. Connect both routers to a power source, and allow them to boot up normally. This can take up to two minutes.
5. Connect an Ethernet cable from your computer's Network Interface Card (NIC) to a "LAN" port on router "A."
Software Setup
6. Launch your web browser and access your router's setup page. Type "http://192.168.1.1" in the address bar and press "Enter."
7. Configure your wireless settings as necessary. Change your "SSID" to name your wireless network and enable a wireless security level of at least WPA2. Set a password that is not easy to guess. Reboot your router if prompted.
8. Disconnect the Ethernet cable from router "A," and connect it to a "LAN" port on router "B." Reboot your PC.
9. Access the router's setup page and locate the "DHCP Settings" page. Its location will vary between models, so consult your owner's manual for specifics. Disable the DHCP server on router "B."
10. Locate the option for router "B's" internal IP address. By default, it will be "192.168.1.1." Change it to "192.168.1.2." Locate the "Wireless Settings" page and change your "SSID" to a name different from the "SSID" on router "A." Reboot the router when prompted.
Tags: cable from, Ethernet cable, Ethernet cable from, port router, broadband modem, Connect Ethernet