Your dd-wrt router has already been configured to act as a client and will share your existing wireless network connection through the LAN (ethernet) ports of your dd-wrt router. Since we've clicked the 'Apply' button in the previous step - your dd-wrt router will now be using the new IP scheme and will require you to enter the new IP address
Oct 19, 2011 Turn Your Old Router into a Range-Boosting Wi-Fi Repeater If you're upgrading to a faster, stronger wireless router, don't chuck your older Wi-Fi box. With the magic of DD-WRT, you can turn your older wireless router into a range-expanding Wi-Fi repeater Wireless Bridge - DD-WRT Wiki After joining the wireless network, DD-WRT took me back to the Wireless tab (where Mode selection is) and I had to click Apply Changes to actually get online. Other than that, flawless instructions. 4/25/08 - CK Second on DHCP not working with v24 release. Also DNS is not available.
Repeater Bridge - DD-WRT Wiki
Nov 11, 2012 Amazon.com: DD-WRT - LINKSYS WRT54G2 Router Repeater DD-WRT - LINKSYS WRT54G2 Router Repeater Bridge USB VPN Ready WiFi WAN Wireless N Access Point AP [DD-WRT PREINSTALLED] by Linksys. Available from these sellers. This fits your . Make sure this fits by entering your model number. These routers are flashed by us with DD-WRT. They are then tested to assure perfect working order!
In configuring the DD-WRT router to act as a wireless repeater, you must configure two connections. The first, is the wireless link between the remote AP and the DD-WRT router. This is configured on the DD-WRT routers physical interface so that the DD-WRT router can join the remote AP's network as a client, just like a laptop would.
[HOWTO] Set Up DD-WRT Repeater (Extend WiFi Range) - YouTube