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WRT54GL drop issues resolved by Linksys...

Discussion in 'Cisco/Linksys Wireless Routers' started by mealto, Aug 4, 2006.

  1. mealto

    mealto LI Guru Member

    I have been having intermitent drops for wireless on a WRT54GL. Linksys insists that WPA is causing this issue and have asked that I turn on Broadcast SSID, run mixed mode (G+B) and use WEP instead of WPA. I was told that WPA reshuffles every hour and this might lead to intermitent drops. WEP does not reshuffle and should be more stable, although less secure.

    My question is, why would would Linksys offer WPA if it meant it could lead to intermitent wireless drops? Is someone pulling my leg on this? Hope someone with more knowledge in this area can chime in.
  2. Toxic

    Toxic Administrator Staff Member

    the problem maybe the inturpretation of WPA by your wirless card and incompatabilities with the linksys router.

    Linksys have given you a solution, but it maybe the wireless card is the fault as it is not picking up the signal correctly.

    have you tried looking over the signal tweaking guide?
  3. mealto

    mealto LI Guru Member

    I was thinking it could be my notebook's adapter but when wireless drops, a PC with a Linksys USB G-adapter also drops. The notebook will auto reconnect after a few minutes but the Linksys USB adapter require a manual reconnect.

    I have seen a few comments scattered indicating that when using WPA, SSID shoudl be set to broadcast. Is this an issue? I have mine set to no braodcast.

    By the way, if you can share a link to the guide, that would be much appreciated!
  4. moshi16

    moshi16 LI Guru Member

    how frequent is the disconnection, let's say in a day?
    how far are the wireless pcs from the router?
    Doesn't the disconnection occur when using WEP?
  5. jgutz20

    jgutz20 Network Guru Member

    is your phone ringing when you get the drop? using microwave? do you have neighbors close by where their phones could be causing interference? did linksys support walk you through changing the channels? if its interference the change to WEP would have made no difference.
  6. mealto

    mealto LI Guru Member

    The disconnects are intermient. Sometimes none in a day, sometimes, once a day.

    The wireless PC's are 25 ft and 2 floors apart. When wireless dies, both computers lose LAN connection.

    Have not run WEP to test it. The old B router only had WEP and never had a problem with disconnects. Only started seeing this with WPA and the new G router. WEP is not as strong as WPA so I am going to try and find a solution. Havce been reading quite a bit and just allowed Broadcasting of SSID and am very hopeful this will solve the issue.

    No phones are 2.4 here. Did have an old one but returned it cause it was causing wireless drops. No microwave either. As for neighbours, don't really know what they have. As I mentioned above, never had any problems with WEP using the older B router. I am hopeful it is not Broadcasting SSID + WPA that is causing the problem. We will see.
  7. jgutz20

    jgutz20 Network Guru Member

    well i'd start with the channels on the router, your most likely at 6 unless you specified something other than the default. why dont you just enable WEP to see if it is specific to the encryption and then turn it back if it is/isnt and then we can go from there
  8. Toxic

    Toxic Administrator Staff Member

  9. mealto

    mealto LI Guru Member

    Thanks Jgutz & Toxic.

    Based on al lthe articles I have found, I have turned on SSID Broadcast wen using WPA and am hoping this will solve the drop issues. ALso beefed it up a bit and turned on MAC filtering for wireless access.

    Let's see how this goes.
  10. Toxic

    Toxic Administrator Staff Member

    so you have no encryption set at all?
  11. mealto

    mealto LI Guru Member

    Based on all articles that I have read thus far, there has been suggestions to turn on SSID broadcast when using WPA encryption. So I am running WPA personal with AES and have turned on SSID broadcasting but have also turned on wireless mac filtering.
  12. cyclo

    cyclo LI Guru Member

    As i mentioned in another post, I have 2 WRT54GLs (one running stock Linksys firmware and another the DD-WRT v23 SP1 Final in client bridge mode) and 2 WET54G (ver 3) wirless bridges all using WPA (Personal) TKIP encryption with SSID disabled and I have no dropout problems. I have also set the WPA Group Key Renewal to 1800 seconds (30 minutes) which is half the 1 hour default. Note that if there were dropouts I would easily notice it as the router running in client-bridge is connected to a Slingbox video streamer which I use to watch TV in a window while surfing the web.

    The problem you are encountering might be related to incompatibility between the router and the adapter / wireless card you are using. If your card has a log of the security handshaking between it and the router (the WET54G has this), look at it... you might notice that there are problems in "handshaking" between the router and client when trying to re-authenticate the encryption key.
  13. mealto

    mealto LI Guru Member

    Cyclo: Thanks. After reading your post, I began wondering what else could be causing the disconnects. I am guessing it is during a the WPA group renewal key that the disconnects happened. So to test this, I went back to this setup:

    Not Broadcast SSID
    TKIP (I used AES previously as it is more secure but this may be causing all the issues)
    Grwoup Renewal Key: 1600
    Beacon: 100 (will try 50 if disconnects reoccur)

    Thanks for the suggestions.
  14. mealto

    mealto LI Guru Member

  15. mealto

    mealto LI Guru Member

    Wanted to update this thread for anyone who might run into drops.

    I have been using the WRT54GL for quite a few months now and have not had any drops once I went from WPA+AES to WPA+TKIP. SSID Broadcast is even off now and network is running smoothly.

    Hope this can help someone.

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