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LAN Started to drop connections

Hello
Recently our LAN has started to act up.
After years of running without a hitch, it's started to drop connections.
Not just single ones but everyone connect suddenly gets cut off.
I can ping all the servers from each other as they are all on the same switch, but anything on any of the other switchs / hubs is unreachable.
The only way round it I've found so far is to reboot the NetGear switch. This initially lead me to think that that switch was at fault as we've had the same problem before, yet after changing it for a spare we had in stock, the same issue turned up again a few hours later.

The current setup is 4 HP Procurve J4899A providing the backbone and 4 NetGear switches.
The restarts only seem to fix it on a temp basis and I'm stuck as to where to look for clues.
Any ideas where to start?

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Crafu
Asked:
Crafu
1 Solution
 
jburgaardCommented:
I would start by going to webinteface of the hart of your backbone.
If any of the bars in status view are yellow (=broadcast from a particular port) make a note of the port (or even disable the port)
By following the source of broadcast you could eventually pinpoint a bad NIC or to ports 'short-cut' - connected, making a network loop.

Perhaps the logs also could tell something .

HTH
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CrafuAuthor Commented:
Thanks for your help
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