Will It be possible two Routers off of one modem?

I would like to know if you can run 2 wireless routers off of 1 internet modem. Currently I have 2 internet lines, 1 for each router. I have tried extenders and they do not do the job as far as range and hooking up a computer in the live-in basement.

Hi Friends. This is a very good question. First, I want to review the difference between a router and a modem. A modem is what supplies your Internet connection from your ISP, either through cable or DSL. This provides a public IP address. A router connects to the modem and will allow you to have multiple devices using that one public IP address, using a private IP addressing system. 

That being said, it is likely you do not have “2 Internet lines”, but you likely have the ability to connect two devices into your modem. This will not provide two different public IP addresses, but can still be utilized for multiple devices. These will connect using the private IP addresses.

However, if I am correct in interpreting what you would like to do, I would suggest that, rather than hooking both routers into one modem, you instead hook one router into the modem, plugging an Ethernet cord from the modem into the uplink port on the router. This is usually either marked with a different color or will be labeled as uplink or WAN (generally it is the first or last port on the router). Then, use an Ethernet cord to connect the second router to the first router using one of the LAN ports on the first router, and plugging into a LAN port on the other. Then place that router in a different location, closer to or in the basement.

You want to configure both routers to use the same SSID, encryption type, and security key so that you can travel freely through the area without having to change your network. Make sure, though, that each router has a different IP address on the same network and subnet so that they can communicate with each other. Turn the DHCP option off on the second router. It would not be a bad idea to configure each router to broadcast on a different channel.

Another option, however, if your PC in the basement does not need to use a wireless connection, would be to look into an Ethernet over adapter. You would plug one adapter into a standard power outlet near the router. Then hook an Ethernet cord from a LAN port in the router to the adapter. Plug the other adapter into the wall in your basement, and use an Ethernet cord to hook into the computer in the basement. The adapter allows the Internet signal to travel through the electrical wires to provide a signal to the computer.