Slow WLAN Speed

Discussion in 'Tomato Firmware' started by duguayjm, May 21, 2007.

  1. duguayjm

    duguayjm LI Guru Member

    Hi, i'm currently using a Linksys WRT54GL v1.1 with Tomato 1.07 and i'm expriencing slow speed when transfering files between my 2 computers. Both are wireless and shows excellent strenght. I can barely and rarely get to 1 mb/s. Any advice ? Both computers are runnning on vista and on same workgroup.
  2. kamatschka

    kamatschka Network Guru Member

    I have the same issue.. Ive updated from Thibor to tomato 1.07 and got laggy Wirless connections.... And with my Notebook I cant get faster connection than 100kb/s (But with my Computer I have no problems of this kind..)... But connected on the WRT45GS (the same that I have) of a friend of mine with OpenWRT Im getting "normal" fast conection.... Does anybody know if this is a known Tomato-Bug..?
  3. ziddey

    ziddey Network Guru Member

    I'm assuming poor wireless as well with my tomato and g54s.

    I've tried all sorts of settings. Currently, I have rts threshold down to 500. I can get ~1ms most of the time, but every so often, I'll get spikes / timeouts. Transmit/receive speeds also move all over the place. I can't get over 60 signal quality according to tomato, even if the client is real close to the ap.

    I've got 2200bg clients as well as atheros ar5006xs ones.

    I've fiddled with xmit of 28, 42, 63. I honestly don't think I need that much, since the apartment is just 3 rooms (2 thin light wood doors in between). Currently, the ap is sitting tall in one of the end rooms. I'm going to try to move it into the center room, but considering it's such a short distance, and the walls are thin, and same with doors, it shouldn't be this bad I'd have imagined.

    It's the stock antenna, and my frequency has no stations. Nearby stations to mine have low signal from my area, so noise isn't that great an issue (tomato usually registers -95 to -99).

    I haven't done much testing with the 2200bg client since it's within a few feet from the ap so it doesn't have any issues. But on my atheros, I've tried disabling power saving, as well as changing the xmit on the client end anywhere from 20 to 32 to 40. I've verified the antennas are plugged in properly.

    Any good other settings to try in the advanced tab? FWIW, I'm on wpa2 which I heard lowers signal quality, but I don't know if that's believeable or not, since it takes place further down the layers.
  4. HennieM

    HennieM Network Guru Member

    Don't have straight answers, and assuming you have eliminated all the radio interference possibilities, perhaps try disabling, on Tomato, all the fancies such as WMM, QoS, Afterburner/speedbooster, frameburst, the B protection thingy (CTS I think), etc. If that solves it, then turn the fancies on one-by-one, and see which one creates the problems.
  5. I am getting slow downloads using v1.06 (around 1.5meg connection). when I plug the laptop into the router I get normal speeds 5meg (both my routers do this). I have turned off all the wireless extra options and have moved the router away from electrical devices. Any idea's?


  6. Toxic

    Toxic Administrator Staff Member

  7. ifican

    ifican Network Guru Member

    Anytime i have had wireless issues where ping times would spike every 5 packets or so it has always been wireless laptop card and or drivers. Now overall slowness could be any number of things but the strange slowdowns or spikes turned out to be my card. Didnt even consider it at first as it worked, i figured it was the router. But changing cards changed the behavior until i found a combination that worked. And strangely enough for me it was the internal wireless card that came with my laptop.
  8. azeari

    azeari LI Guru Member

    well i experienced this many times before while helping friends troubleshoot their woes. Most of the time the wireless card was at fault, more recently though it was a faulty router, although all the symptoms were the same. (= take care when diagnosing such stuff
  9. Thanks guys,

    Both my company laptop and desktop was giving only a 1.5 meg max connection, I ended up buying a WRT54GL and flashing it with tomato and using it as a bridge and now I am getting full speed again (5 meg connection).

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