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WHR-HP-G54 w/ 1.04 having speed issues

Discussion in 'Tomato Firmware' started by akujind, Feb 13, 2007.

  1. akujind

    akujind Network Guru Member

    I just bought a new WHR-HP-G54, and I'm having some speed issues with it. The router is on one side of my apartment, and my laptop is on the other side. I'm maintaining an okay signal (around -60 to -70), but the problem is with the wireless speeds. It seems to peak at 24Mbps for a few seconds then slowly spirals down to 1Mbps which basically means my connection is dead. It'll stay at 1Mbps for a few minutes before going back to 24Mbps and restarting the cycle all over again. Windows reports the signal strength as ranging from "Good" to "Very Low." Anyone know what could be causing this?
     
  2. larsrya8

    larsrya8 LI Guru Member

    After the standard "Did you clear NVRAM?", how many other wireless networks are in your area? You might be sharing a channel, or there may be some other form of interference.
     
  3. akujind

    akujind Network Guru Member

    Yes, I cleared NVRAM before and after I installed Tomato. There's quite a few networks around me. I'm in an apartment complex in a college town. With NetStumbler, I can see most of them use channel 1 and 6, with two others using 11. I'll try 11 and post back here with results.
     
  4. akujind

    akujind Network Guru Member

    Nope, no improvement on channel 11.

    I have a WRT54GL with Tomato on it. How would I set up WDS with them? I would prefer to just have the WRT54GL act as a repeater instead of having two different networks and bridging them with WDS. That way, I don't have to worry about connecting to the right network everytime I move to a different room.
     
  5. u3gyxap

    u3gyxap Network Guru Member

    If channels 1-6 and 11 are occupied, try on channel 9.
    WDS and Repeater are the very same thing.
     
  6. akujind

    akujind Network Guru Member

    Hm, well I figured out WDS, but it seems to be giving me the same speeds I was getting before at 1Mbps. Although now I realize my connection is relatively stable as long as I'm not downloading anything. It goes down to 1Mbps then goes back up after a minute or two. When I am, though, then it dies and goes to 1Mbps and stays there for a long time.
     
  7. u3gyxap

    u3gyxap Network Guru Member

    Maybe the problem is with your wireless card that is in your laptop. Intel cards are known to cause problems sometimes.
    Update to latest wireless drivers, if possible.
    And, you may also try to relocate your router.
     
  8. akujind

    akujind Network Guru Member

    Unfortunately, the router can't be relocated at the moment.

    Also, the wireless card in my laptop is a Broadcom one. I also have a USB Airlink+ adapter which behaves similarly.
     
  9. roadkill

    roadkill Super Moderator Staff Member Member

    how stock firmware behaves?
     
  10. akujind

    akujind Network Guru Member

    I haven't had a chance to test the stock firmware. I guess I'll try flashing it and testing it out sometime later this week.
     
  11. akujind

    akujind Network Guru Member

    Help! I flashed it to the stock firmware using the decrypted firmware from DD-WRT's site. This didn't really show much improvement. However, now I'm having a hard time reflashing tomato. Using the batch file just gives me a timeout, and manually using the tftp command doesn't seem to work either. Did I mess something up?

    EDIT: Nevermind, I got it. I finally had success after using Linksys' tftp software.
     
  12. azeari

    azeari LI Guru Member

    well if you continue to experience such issues, u might wanna try playing around with the preambles to see if u get any difference. i remember one of em's good for crowded airwaves. Also, tweaking the fragmentation and rts threshold might help, though u might have to google for help on that
     
  13. akujind

    akujind Network Guru Member

    I don't know what to do anymore. The apartment I'm in must be lined with lead or something. The router is in one room, and when you're in that room, a speed test shows speeds of around 4800kbps. A laptop two rooms over shows a speed of around 2800kbps, and even then, the RSSI for that laptop is around -40dBm according to Tomato. How could the bandwidth be reduced that much? As for the rest of the apartment... At one place, I get around 400kbps. At worst, I get around 200kbps. We also have 4 laptops at any given moment connected to the router. Does that have anything to do with it? Does anybody know what I can do?
     
  14. azeari

    azeari LI Guru Member

    hmm thats strange, -40dBm on tomato means the router sees a rather gd signal coming from the laptops. What signal do the laptops report? Try tweaking the the transmit power higher, maybe try 84mw and see if it makes a diff.

    enabling frame busting might help too, and i usually leave afterburner settings disabled. Also, setting a short preamble might help u get better throughout rates. you might want to try changing the transmit antenna too if you still don't see any improvement after this, cuz this seems like a problem with the transmited signal(from the router)

    Are your airwaves crowded by any chance? like.. lots of neighbouring wireless networks?
     
  15. akujind

    akujind Network Guru Member

    NetStumbler reports -50 instead of -40, but that's still pretty good. As for the transmit power, I read that I was supposed to leave the transmit power at 10mW or else the amplifier would be disabled. As for crowded airwaves... NetStumbler detects 27 other networks around me... However, only 8 of which are detected with less than -80. Or greater than. I don't know how that works with the - in there. You know what I mean. I'll try playing around with the preamble and stuff.
     

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