WRT54G as a Wireless Ethernet Bridge

Discussion in 'Tomato Firmware' started by Kiwi8, Jan 12, 2008.

  1. Kiwi8

    Kiwi8 LI Guru Member

    Are there any throughput penalties for using WRT54G as a Wireless Ethernet Bridge as compared to just using a normal wireless adapter to connect?

    Thanks in advance.
  2. ifican

    ifican Network Guru Member

    It depends on how you plan on doing that. You could have as much as a 50% bandwidth hit or it could be very similar to using an adapter.
  3. Kiwi8

    Kiwi8 LI Guru Member

    Well, how do I configure it such that it behaves as an adapter?
  4. Kiwi8

    Kiwi8 LI Guru Member

    Ok, this is basically what I want. Will there be any throughput penalties?

  5. j.m.

    j.m. Network Guru Member

    If, as in the image, you do not have any wireless clients connected to the bridge, then there will be no significant throughput penalty.
  6. Kiwi8

    Kiwi8 LI Guru Member

    By the bridge, do u mean both the routers? What if I have a single wireless client connected to the main router (the one connected to the modem)?
  7. j.m.

    j.m. Network Guru Member

    No, I mean the unit designated "Secondary" in your image.
  8. HennieM

    HennieM Network Guru Member

    In the above setup, where the primary router is a wireless AP, and the secondary router is a "Client Bridge", you will not have any performance penalty. The Client Bridge secondary router acts exactly like a single wireless adapter/client PC connected to the primary router.

    If only 1 of the PCs on the right is talking to the internet or to one of the PCs on the left, it will have the full wireless bandwidth of the bridge to itself.

    If 2 PCs on the right talks simultaniously over the bridge, they will share the wireless bandwidth, and so on. This is not a performance penalty, it's just normal network bandwidth sharing. If you had 2 wireless clients on the right, connected directly to the primary router instead of the bridge setup, they would also share the wireless bandwidth.
  9. Kiwi8

    Kiwi8 LI Guru Member


    I have since procured a 2nd WRT54G router and set up a Wireless Ethernet Bridge system.

    Btw, I have a question regarding QOS, though I think I might have the answer. Do correct me if I'm wrong. My question is, I should only enable the QOS on the gateway router and not the bridge router, rite?
  10. Kiwi8

    Kiwi8 LI Guru Member

    Same for the port forwarding. It should be done only on the gateway router, rite?
  11. HennieM

    HennieM Network Guru Member

    Yes and yes. In the above setup, the secondary router is just an ethernet switch that converts whatever comes over wire, to wireless, and vice versa, but all still happens on your local network.

    QoS, port forwarding, NAT, etc., etc. is only applicable where you route from one network to another, i.e. the primary router.
  12. Kiwi8

    Kiwi8 LI Guru Member

    Thanks for the confirmation.
  13. rdconsult

    rdconsult LI Guru Member

    No WPA2 encoding in Bridge Mode

    Hello Kiwi8,

    currently the Bridge Mode does not support
    WPA2 PSK encoding, only WPA PSK.

    The current standard wireless Adapter ( with WiFi sign ) should support WAP2 .

    So your WLAN is restricted to use WAP PSK -

    The stronger encoding is WPA2 PSK!

    The main advantage I see you have a switch at the "bridge point".

    You can connect two or more computer at this location and have the communication between the two by wire.

    kind regards

  14. whiteazz

    whiteazz Networkin' Nut Member

    thanks. will give a try.

    it worked ok for a few days and then it stoped working.
    I did everything as it was suggested.

    I guess it's faulty router.
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