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Broadcom cards continually re-negotiating, showing short?



 
 
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Old July 25th 09, 05:50 PM posted to microsoft.public.windowsxp.network_web
Mike
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Posts: 6
Default Broadcom cards continually re-negotiating, showing short?

I have a network with 13 HP DC5750 desktops. Almost all of them are
exhibiting a strange behaviour. They drop the network connection for a
few seconds, and then reconnect. In the event log, I see this event
repeatedly:

'Broadcom NetXtreme Gigabit Ethernet: Network controller configured
for 100Mb full-duplex link'

On some machines, it does not happen too often, once every week or so.
But on some, it is happening once an hour, and even once every few
minutes sometimes. Also, when I run the Broadcom Diags, and run cable
test, it shows that 2 of the 4 pairs have a short. At first, I
thought, AHA!, that's the problem. But now it seems suspicious,
because all my computers are showing 2 shorted pairs. While it is
possible, I doubt that they are all shorted.

Has anyone else seen this happen? I'm going to try new cables to make
sure, but beyond that, this seems pretty weird to me. Maybe it's the
cheapo Linksys switch they are plugged into? Or maybe there are
Gremlins chewing on my cables at night? Many of the events are
registering after midnight....
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