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Laptop kicks other computers off wireless network

Old 11-16-07, 02:09 PM
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Laptop kicks other computers off wireless network

Every time I boot up my laptop or enable the wireless card in it, it connects fine to my Linksys wireles router, but the other computer that is always on loses its connection immediately.

If I unplug the wireless router and plug it back in, both machines then work fine.

I'm guessing IP conflict but I don't know how to resolve this and I'm tired of the "unplug" workaround that I have been using for 2 months now. I believe both computers are set to obtain an IP address automatically.

The latop is running Vista, the always-on machine is running XP.

I tried googling for some answers but unfortunately the only words I can think of give fairly broad results.

Any tips on where to start?
Old 11-16-07, 02:11 PM
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Originally Posted by Thor Simpson
I believe both computers are set to obtain an IP address automatically.

Any tips on where to start?
Your first step should be confirming that this is true.
Old 11-16-07, 03:19 PM
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Yeah, this needs more info/testing

ipconfig /all each machine and see what you get
look at the router and see if the DHCP is configured correctly (maybe change the range altogether)


What if you switch the order they connect? turn the other machine that is always on to off, connect up the laptop causing trouble first, then connect the other machine, do you have the same result?

Make sure all firmware in the router and on the wireless cards is up to date, make sure the wirless drivers are up to date
Old 11-16-07, 03:57 PM
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Originally Posted by stevevt
Your first step should be confirming that this is true.
Done.

It doesn't seem to do it in the reverse order.

Perhaps it's a driver on the Vista laptop. I'll check for updates.
Old 11-16-07, 04:31 PM
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There was a firmware update. Ran that.

Turning on the laptop wireless kills my desktop connection instantaneously as before, then the desktop searches for an IP again and reconnects.

Less of a pain I guess if this holds true after restarting everything etc but far from perfect.

The main issue is losing connectivity on the desktop that has remote access etc open. It stinks for all that to lock out when the laptop is turned on.

DHCP is enabled on the router as well as both computers. It seems like a screw up in assigning the IPs but who knows.
Old 11-16-07, 04:51 PM
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You can test the DHCP screw up, hard wire a static IP into the desktop and eliminate if from the DHCP range, see if that changes anything.
Old 11-19-07, 02:47 PM
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It may not be DCHP related, perhaps your laptop wireless card is transmitting a different speed (ie. a/b/g/n) which then forces your router to change to that speed causing the rest of your computers which may not be compatible to drop connection. Then when your other computers reconnect your router then goes back to the original speed and your laptop's wireless card then slows down to that speed and then they all work.

Just another option for you to explore.


Of course if your desktops aren't running wireless this suggestion is worthless... or is it?
Old 11-20-07, 09:07 AM
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What brand router and wifi cards?

When you use the laptop elsewhere do you hear anyone suddenly complain that they lost their connection?

Try changing the channel (frequency) that the router is using. Possibly someone else closeby is on the same one and could be causing noise confusing the desktop.
Old 11-21-07, 03:10 AM
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Set static IP adresses for each PC.
Old 11-21-07, 02:30 PM
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I had a somewhat similar problem a while back and it was related to the ActiveSync on my laptop. I don't know if you have AS or not, but it used to kick everyone off my network even if they were wired in.
Old 11-21-07, 08:38 PM
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Do the PC's share the same name?

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