Recently, I had a request to add wireless capability to a small network. They already had a non-wireless router and were not going to replace it with a wireless one, and they also had a wireless router, that they had already bought. So the problem was putting a second router on the network to broadcast the wireless signal without the 2 routers conflicting. This is what I did:
Router1 has an IP address of 192.168.1.1 Wireless router out of the box has an IP address of 192.168.1.1
Change the IP address of the Wireless router to 192.168.2.X I used 192.168.2.1 but you can use any number up to 254.
Disable DHCP on the Wireless router to turn the router into an Wireless Access Point.
Enable the strongest Encryption that you can for the wireless router, that is going to work for your network, at least 128 bit WEP
Cable the routers so that router 1 is hard wired into one of the ports on the wireless router, NOT into the WAN port. You can also go through a switch if needed.
So it will look like this
Router1-----> Switch (if needed) -----> Wireless Router ports 1-4, Not WAN
The wireless router should now be broadcastting a wireless signal for internet.
- Dave Kezziah