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Wireless Extremely Slow Or No Connection - Problem Only Just Started After 1 Year Of Trouble Free Us

Discussion in 'Tomato Firmware' started by EViS, May 16, 2011.

  1. EViS

    EViS Networkin' Nut Member

    Router: Bufalo WHR-HP-G54
    Firmware: Tomato v1.28.1816


    After 12 months of trouble-free use, all wireless computers in the house are either unable to load any webpages or they are exceedingly slow. Windows shows a wireless connection with a good signal. The Ethernet connections work perfectly.

    What may have caused this all of a sudden?

    So far I have only tried changing channels from 11 to 8 as a scan showed 2 other WAP's nearby on channel 11.
     
  2. TexasFlood

    TexasFlood Network Guru Member

    Some sort of interference would be my first thought, like a close neighbor who just bought a 2.4GHz 802.11N router such as an RT-N16 or E3000. Try a radical shift to like channel 1 and see what happens.
     
  3. Toastman

    Toastman Super Moderator Staff Member Member

    http://www.linksysinfo.org/forums/showpost.php?p=367889&postcount=7

    Please do try to understand the reasons why placing a router on intermediate channels is antisocial. It has nothing to do with other devices, forget those for the moment, just think about wifi and only wifi.

    Why are the other channel numbers there if it isn't really sensible to use them? Because these channels were numbered for use by many different bits of hardware long before wifi was popular. Wifi needs more than one channel - other devices may not. So for wifi we use 1,6,11 in the vast majority of countries. That's all.

    Now, you're going to see posts by all manner of people whose opinions will differ and whose idea is to use wifi channels in between and perpetuate the problem. I'm an engineer, I believe in physics, not opinions. Just for the record :)

    Could be baby alarm, telephone, microwave .... any of those other things... use other channels only when you absolutely have to.
     
  4. EViS

    EViS Networkin' Nut Member

    Well channel 8 has worked better over the past few days, but still experienced slowness and dropouts. I've just switched to channel 1 so will see what happens over the next week.
     
  5. EViS

    EViS Networkin' Nut Member

    As I understand it from that excellent post, I should ONLY use channel 1, 6 or 11 anyway?

    If I have understood that correctly, why are the other channel available as options and in what scenario(s) would you use them?
     
  6. Toxic

    Toxic Administrator Staff Member

    that post only shows what Wireless Routers and Adaptors transmit at. Cheap Cordless Phones, Microwaves and other devices that transmit radiowaves can also interfere, thats why you don't necessary have to use just 1, 6, or 11.
     
  7. rs232

    rs232 Network Guru Member

    If you use a recent tomato mod (e.g. Victek) you can use the "auto-channel". That should help
     
  8. TexasFlood

    TexasFlood Network Guru Member

    I've never had much luck with auto-channel but maybe that's changed recently? One of the things I learned about microwave interference is that it ends to be on the upper 802.11b/g channels so staying towards the lower channels can improve resistance to microwave interference. Check out the wi-fi planet tutorial "Tutorial - Dueling with Microwave Ovens". for some real world testing to illustrate this. Regarding which channels to use, I think the point of that thread is what is shown in the chart below, that there is a lot of overlap on wireless channels and 1, 6 and 11 don't overlap with each other so make sense to look at those first. But Interference is not always so discrete so you might end up having best results with another channel.
    [​IMG]
     
  9. EViS

    EViS Networkin' Nut Member

    Well I've been on Channel 1 for the last 9 days and have noticed an enormous improvement. No drop-outs and no slow-down :). Hopefully it will remain this way.

    Thanks all!
     

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