Problems with WRT54GL as Wireless Bridge

Discussion in 'HyperWRT Firmware' started by wwwdev, Sep 29, 2007.

  1. wwwdev

    wwwdev LI Guru Member


    I am trying to configure my WRT54GL (HyperWrt2.1 + Thibor15c) to access an existing Access Point (type unknown). I want to connect 2 PC's via ethernet cable to the WRT54GL.

    The existing AP has access control via MAC-Address, no further authentication or encryption. SSID is not broadcast and connection is on channel 13. IP address is and it runs as DHCP server and DNS gateway.

    I can connect my notebook (with internal WLAN) to the AP without any problems. Because I want to have a "local network" with 2 PCs and network printer I got the Linksys. I have set the wireless mode to Wireless Ethernet Bridge, SSID is the same as the original and channel 13 set. Security is disabled, firewall is disabled. Internet connection is disabled, local IP adress is LAN-Gateway and LAN DNS are set to, Subnet mask is, DHCP disabled. The MAC address is allowed to access the AP. Whatever I do, I cannot get an internet connection. I cannot ping either from the (wired) PC nor from the configuration interface. Please help me! This is driving me crazy - what am I doing wrong?

    Thanks in advance
  2. ifican

    ifican Network Guru Member

    If you are setting it in bridge mode i belive you need to turn off DHCP for your local router, the whole point of "bridge" is to seemlessly pass the traffic. If you put it in wireless client mode, it can get an ip from the AP and then you can use dhcp on your router to give out whatever address you choose, just make sure it is in a different range then 192.168.2.x
  3. wwwdev

    wwwdev LI Guru Member

    Bridge fails even with DHCP disabled

    Thanks for the tip, but DHCP is already disabled :-(
  4. ernst.conradie

    ernst.conradie LI Guru Member

    Hi wwwdev,
    You state that internet is disabled.
    I have seen that there are three mac addresses for the one single rooter.
    One for wireless, one for wired and one for bridge.
    If I am wrong in my logic please inform as I am also learning.
    If you disable internet does that not disable the bridge?

  5. wwwdev

    wwwdev LI Guru Member

    Internet disabled / Mac addresses

    Hi! Yes I saw the 3 MAC addresses too - to be on the safe side, I got the network admin to give permission on all 3 on the AP.
    Disabling Internet doesn't kill the bridge (as far as I understand things) - the WLAN connection should automatically build a bridge, the Internet settings are for directly connecting to a DSL modem or similar (I have tried pretty much all Internet settings too). I just don't seem to be connected to the WLAN... It seems such a simple problem that I am slowly going craaaazzzyyy...!!!
  6. ifican

    ifican Network Guru Member

    Where are the address that you state as lan address' comming from?
  7. HennieM

    HennieM Network Guru Member

    What original SSID? "Linksys"? Your SSID must be that of the remote/master AP. (It does not matter that the master AP's SSID is not broadcast - that's academic).

    As ifican asked: Your IP, - is it not used by some other device connected to the master AP? I.e. you may have an IP address conflict, especially if your IP is in the DHCP range of the master AP.

    For info:
    The MAC address to be registered as allowed on the master AP is your AP's wireless MAC, as your AP connects to the master AP via wireless, even though your wireless may be bridged to the switch. (Anyway, you cover that by having all your MACs registered).

    Also, disableing your AP's WAN/internet connection does not have any influence on the switch (the 4 LAN ports), nor on your wireless interface (assuming of course your setup is otherwise normal).
  8. wwwdev

    wwwdev LI Guru Member

    Thanks for your help, but I have given up - I am sure that I had all the settings right and no IP-clashes. I have come to the conclusion, that the Router was a waste of time and money and am now using a USB WLAN-Adapter on a central PC and sharing the internet connection. Wasn't my first choice of configuration but it's a lot easier!
  9. HennieM

    HennieM Network Guru Member

    Pity. Some last checks:

    Have you tried to set your GL as "client" or "client bridge"? (I forget what exactly it's called on Thibor) - client bridge is the preferred option.

    Did you plug the cable from your PC's wired network card into one of the LAN ports of the GL (not the WAN port)?

    Does your wired PC get an IP address from the master AP DHCP, or do you set a static IP address? If you get a DHCP assigned address, it means your PC is indeed talking to the master AP (as DHCP server is off on your GL). So, what is your wired PC's IP address? It must also be in the subnet. Also, what are the DNS server, gateway-, etc. settings on your PC (wired)? It seems you are running XP. If so, in a DOS prompt, type "ipconfig -all" to see the necessary info.

    Did you disable or otherwise turn off your wireless adapter on your PC? This is just to make sure you don't accidentally "work" through your wireless adapter instead of through the wired adapter to the GL and further.
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