slow wireless speeds

Discussion in 'DD-WRT Firmware' started by techy, Dec 8, 2007.

  1. techy

    techy Network Guru Member


    I recently upgraded my connection to optimum boost. Directly connecting to cable modem or wired connection to the linksys WRT54GS model, I get consistent dowload/upload speeds of 22/5 Mbps. However on wireless side I only get 4/3 Mbps. I have 2 linksys routers connected in a WDS configuration. Clients connected to either of the router wirelessly, give only 4(Down)/3(Up) Mbps. I have tried changing channels, boosting signal power to 90mW and nothing has helped. One of the thing I have is that I have mixed clients (b/g) and I am running in mixed mode. Does that matter? I was running 23SP1 and have upgraded to 24RC5 but has made no difference. Any other tips to improve wireless speeds?


  2. HennieM

    HennieM Network Guru Member

    WDS may be eating some of your bandwidth - could be 1/2.
    DD-WRT tend to be slowish on wireless in my experience. Try Tomato of Thibor HyperWRT.
    Using WPA? Use AES and not TKIP encryption.
    The B-clients/mixed mode could be slowing the whole network.
    Make sure you have Frame Burst turned on, and Afterburner/SpeedBooster off.

    The VERY best wireless you could get would be around 25 Mbps.
  3. techy

    techy Network Guru Member

    I will try a different firmware like you said. Even if WDS eats half of the b/w and best I can get is upto 25mbps, then I should get to 10Mbps theoretically. I have frameburst and afterburner on. One of my laptop has builtin b that's why I have mixed mode enabled. Looks like time to buy a g card for that as well. I am using WEP. Does wds work with wpa? Is wpa faster than wep (not worrying about security).

    Thanks will try and keep you posted.
  4. techy

    techy Network Guru Member

    One of my router is v4 and the other one is v6. So I guess both Tomato and Hyperwrt are out :(. Looks like I am SOL at this point. Any suggestion for tweaking DD-wrt firmware to improve wireless speed?
  5. LLigetfa

    LLigetfa LI Guru Member

    Did you try RWIN tweaking?
  6. HennieM

    HennieM Network Guru Member

    You can put Tomato on your V4, and keep dd-wrt micro on the V6. WPA(AES) DOES work with WDS in my experience, and would likely be a bit faster (and more secure). Afterburner must be OFF.

    Do you really need WDS? If you don't need wireless clients to connect to the 2nd AP (just wired clients), a better/faster solution might be to have the 1st AP in AP mode only, and the 2nd AP in WET or "Client bridge" mode. This takes away the overhead of WDS.
  7. techy

    techy Network Guru Member

    RWIN did help to get the speed to 9Mbps. However, I am still confused, why should it matter as the latency is same in case of wireless vs wired connection.

    Thanks a lot for the clue.
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