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Intermittent Disconnects on Network

Posted on 2010-11-16
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Last Modified: 2012-05-10
In the middle of last week I started receiving complaints from users that they have been experiencing slow downs and disconnects from the network.  Some of the symptoms are sometimes is take a long time to open a file or print from the server, Outlook will disconnect from Exchange and reconnect 10 - 20 seconds later, Iseries Access loses it's connection to the AS400...  I believe I am having a problem with my switches (all 3COM 4500) however I cannot pinpoint where the problem is.  I have been running a continuous ping to a few clients that have reported problems and they do not appear to be losing connection.  

Any help is greatly appreciated.
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Question by:DarrinZuroff
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volcer35 earned 500 total points
ID: 34145335
Well you can do a network monitor test
http://www.plixer.com/products/netflow-sflow/free-netflow-scrutinizer.php
if they have netflow ablility
the ping test is a basic test but
http://www.manageengine.com/products/oputils/network-monitoring-tools.html

these might alos help

the expensive route would be to replace the switch but sometime that is not always a option also are all the pc's servers on the same switch if so try moving them to a different one if that is a option.

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by:DarrinZuroff
ID: 34148567
I found there was a rogue computer connected to the network that was causing all of my problems.  Someone connected a computer that was configured as a firewall and was running various services... When I disconnected the PC the problems we were having disappeared.  Needless to say, I had a pretty heated discussion with the person responsible.
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by:volcer35
ID: 34148939
bummer nothing
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by:DarrinZuroff
ID: 34150339
I did not award points because I did not use the steps suggested.  Should points have been assigned in this case?
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