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Wireless Networks Thread, Random "Limited or No Connectivity" on different wireless laptops in Technical; Just recently I have started to get odd limited or no connectivity issues on some laptops. Seems that if X ...
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    CHR1S's Avatar
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    Random "Limited or No Connectivity" on different wireless laptops

    Just recently I have started to get odd limited or no connectivity issues on some laptops. Seems that if X laptop gets turned on before Y laptop Y wont connect. Can SIDs affect the authentication process of a WAP? Or could there be another issue that isnt anything to do with the WAP (DNS?)?

    I dont see any duplicate IP warnings or anything just the flat refusal to join the wireless network and the assignment of a generic IP address.

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    Well I connected it via a patch cable and it connected to the wireless instantly and every time after that.... bizarre!

    Anyone know whats up with it?

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    I presume you've tried rebooting the APs? Do you have MAC Address security enabled? Alternatively resetting the AP completely to factory defaults and re-configuring the network and security information can cure problems.

    I'd always recommend you using signed wireless drivers. Are the laptops (if the same) based on the same image?

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    CHR1S (5th March 2010)

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    Rebooted the AP, no MAC security, latest drivers.

    Yes the laptops are imaged (not by me tho) and I assume they were sysprepped.
    Worth generating a new SID for them?

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    Grrr, its just repeating the same pattern.

    Refuse to connect > Plug in cable > Connect to wirless > last a while > strop > repeat

    They key bit is the fact of the split second the cable is plugged in the wireless connects.


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    They key bit is the fact of the split second the cable is plugged in the wireless connects.
    I'm trying to think why this is. I don't think the problem is DNS or computer SID related. If you logon locally to the laptop do you just get an exclamation mark on your wireless icon? What type of authentication are you using?

    As an experiment create a secondary SSID on the same AP but allocate no security to it. Connect the laptop to it then reboot. If it works, wireless is OK, the AP is OK and you can narrow it down to an authentication problem.

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    CHR1S (5th March 2010)

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    Quote Originally Posted by Michael View Post
    If you logon locally to the laptop do you just get an exclamation mark on your wireless icon? What type of authentication are you using?

    As an experiment create a secondary SSID on the same AP but allocate no security to it. Connect the laptop to it then reboot. If it works, wireless is OK, the AP is OK and you can narrow it down to an authentication problem.
    Were using WPA2-Personal/AES and yes once logged in locally I see the exclamation.

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    With a test SSID and no security I get the same issues.

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    Hmm interesting... well I would reset the AP to factory default and re-configure settings. If possible upgrade the firmware is there's an update too.

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    CHR1S (5th March 2010)

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    Hmmm...got that on one laptop so not a great issue. Thought it was just me or a coincidence that the wireless managed to get an ip just after I gave up and connected the lan cable! Will look in to it a bit further, may have to check for upgrades to the driver as its a PMCIA netgear card as the one inbuilt in the Panasonic Toughbook seems to have died and if its enabled as soon as it tries to connect the laptop just bluescreens and reboots even after a complete reinstall so it was not software! Disable card and its OK,

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    So, I've flashed the AP (Cisco WAP4410N) and after a farce trying to figure out why it retained all its settings but decided that it wouldnt get an IP via DHCP so reverted to 192.168 address.

    It seems to be working now under testing condtions, Ill wait till the kids get their hands on them before I reserve judgement

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    Wooo, they all logged on properly and seem to be working fine.... *Keeps Fingers Crossed*

    Thanks All

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    Grrr, one PC has started to do this again..... im getting stressed now

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    Since summer last year I have been getting intermittent problems with xp sp3 on wireless with offline files enabled, tried everything and to no avail. Took the drastic route and installed win7 on laptops and problem solved. Not sure if it is something in sp3 on xp causing this but slt took my advice to move onto 7.
    Last edited by jsnetman; 11th March 2010 at 02:00 PM.

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    This is only a recent problem, so I can only assume an update has messed with it as its the same hardware as before.

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