How can I turn an old router into a wireless bridge using DD-WRT?

Evan Manning April 12, 2011
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I followed the instructions to setup an old router using DD-WRT as a wireless bridge, but it still will not receive internet access.

  1. Mike
    April 13, 2011 at 3:24 am

    What the article is missing is that you should create a different Network behind the Bridge to prevent Routing problems, for example:

    Network behind Primary Router = 192.168.1.x
    Network behind Bridge = 192.168.2.x

    Looking at the Network the reason is pretty simple:
    Router (192.168.1.1) --WiFi-- Bridge (192.168.1.2) --wired-- Clients (192.168.1.x)

    Using the same network your Clients will get 192.168.1.1 as the Gateway. Since this Gateway is behind the Bridge they actually don't know where to send the packets to in order to find 192.168.1.1... This setup sometimes work, more often it doesn't

    The more reliable setup should look like that:
    Router (192.168.1.1) --WiFi-- Bridge (192.168.1.2/192.168.2.2) --wired-- Clients (192.168.2.x)

    Basically your Bridge will have
    the IP 192.168.1.2 to connect to the primary Network
    the IP 192.168.2.2 for the wired clients
    and will run it's own DHCP Server

    The DHCP Server should then be set to give out:
    IP-Addresses = 192.168.2.x
    Gateway = 192.168.2.2
    DNS = 192.168.2.2

    *** The reason I am not using 192.168.2.1 for the Bridge on the second network is that you don't get confused with your primary Router

  2. Tina
    April 12, 2011 at 11:38 pm

    Evan,

    are you referring to Jorge's article How To Turn An Old Router Into A Wireless Bridge.

    Could you please specify where exactly you run into problems?
    Which operating system are you using?

    James recently posted another article on DD-WRT: How To Set Up Your Own Free Wifi Hotspot With DD-WRT, but I suppose this isn't helpful if you are trying to set up a wireless bridge.