Users losing intermittent connection to network

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16 Dec 2008
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This problem is driving me crazy, was wondering if anyone could provide some insight.

Lots of users are losing network connectivity to resources, word documents / applications / network drives even RDP sessions are dropping, it causing corruption and havoc all round.

I am not sure how to detect the problem, it would suggest packet loss, since it's affecting so many different sources and destinations I can only assume it's a switch, but there are 8 switches all daisy chained to the master switch which has all the servers connected.

I assume it's the master switch, is there anything else that could affect this? Broadcast storm perhaps, if so how how can I detect this. Downloading wireshark at the moment but since I have no idea what to be looking at this might be lost cause. My plan was to install it on a users machine and simply monitor the traffic and hope something obvious becomes apparent.

We recently moved a lot of desks around 2 weeks ago, maybe it's a damaged cable somewhere. :(

Any ideas would be much appreciated.
 
They are HP ProCurve 1800 switches.

I have been running persistant pings to all those who have complained, which is a lot, there is no time out from ping -t commands. Users do not report a network diconnect, access to the resource just ceases, as if packets get lost.

Users do not all DC at the same time.
 
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