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wireless speed problem

Discussion in 'Tomato Firmware' started by chomli, May 7, 2008.

  1. chomli

    chomli LI Guru Member

    evan my signal is full (i'm 2m away from router) wireless speed sometimes dropping from 54Mbit to 48, 36,18,11,5.5... its not consistent. but its happening always when one computer with low signal downloads from mine and my intenet speed is slowed down also...

    i have linksys WRT54GL with tomato, 3 comps connected via wireless.
    what could be a problem?

    thanx
     
  2. chomli

    chomli LI Guru Member

    according to faq it could be wireless driver problem. i'll try to DL new version.....
     
  3. bigclaw

    bigclaw Network Guru Member

    Is your slower computer B or G? I believe a G network has to slow down to B speeds if any B clients are active...
     
  4. chomli

    chomli LI Guru Member

    i'm noob with wireless. B & G u mean wireless standards? i think that both comps are 802.11G.

    i updated my driver but there is problem is still there ....
     
  5. chomli

    chomli LI Guru Member

    mb should i put in wireless mode access point + wds instead access point only?
     
  6. Rafatk

    Rafatk Network Guru Member

    If both computers are 802.11 G, try to set the router to G-only.
    And put to AP only, if you do not use WDS.
     
  7. HennieM

    HennieM Network Guru Member

    Aditionally try putting your computer a few meters further from the router (or the router closer to the other computer) - the strong signal from 2m away MAY be contributing to the problem, when another computer with a weak signal speaks.
     
  8. chomli

    chomli LI Guru Member

    tryed all, but i cant solve problem... maybe i should buy new router or try to change firmware, maybe dd-wrt?
     
  9. HennieM

    HennieM Network Guru Member

    The speed at which your wireless talks is a software function - a new router would therefore most likely not solve this.

    You can try other firmware, and if you don't like it, switch back. I doubt however if that will make any difference. IMO dd-wrt's wireless is a bit slower than that of other firmware.

    I'm not sure of this, but, for what it's worth:

    When 2 or more wireless clients talk to the same AP/router at the same time, the wireless comms on the AP will slow to the speed of the slowest client. If the clients talk to the AP at different times, the AP will only slow down when it talks to the slower clients.

    I your situation you have a fast client (your PC) and a slow client (the weak signal one). When you talk to the router, the wireless comms wil be fast. When the weak signal PC downloads from your PC, the 2 PCs are talking "at the same time", and the wireless comms slow down.

    As mentioned, I dunno if this is true, but it's possible IMO.
     
  10. TexasFlood

    TexasFlood Network Guru Member

    I can tell you first hand that I had such a problem with a driver on the client side of a desktop I have.

    I bought this AT&T PlugAndShare 6500G PCI 802.11g card on clearance. With the AT&T driver, the speed would float all around and very often stay near the low end. I was able to lock the rate but if I locked it at the max rate problems could occur. It worked but was a pain and the interface was very basic with few features.

    While searching for a better driver, I found that there were generic drivers available for the Atheros chipset on the card & found a new & improved Atheros driver that works much better as well as having quite a few more features. I still use that card - just checked it and it's connected at a solid 54Mbps.

    I'm quite happy with the card now but if I had it to do over again I'd think twice and do some homework before buying another clearance card. The time I spent tracking down the better driver probably wasn't worth what I saved on the card.
     
  11. chomli

    chomli LI Guru Member

    thanx guys but problem also appears(less frequently) with communication between my pc and router...

    i have ****ty broadcom wireless card(excelent signal) integrated in my laptop. other laptop(weakest signal) has integrated intel wireless and third desktop comp (good signal) has cheap canyon wl card... now i think thats a problem :D

    all computers are in range within 50m but there are some wall obstacles.
     
  12. kzrssk

    kzrssk LI Guru Member

    If you have a WHR-HP-G54, turn off the Enhanced RX Sensitivity thing. Mine was doing the same thing until I turned that off. Supposedly it was fixed in an earlier release, but as of 1.19, Disabled is still actually Enabled.
     
  13. chomli

    chomli LI Guru Member

    problem solved.... it was so stupid :)
    in advanced section of wireless card configuration was option for speed "optimal speed". i changed it now to 54 and works OK....
     

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