How to debug congestion in network?
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02-08-2007 01:45 AM - edited 03-05-2019 02:14 PM
Hi
I'm having a problem with slow connectivity on my LAN, now I don't know what the problem is at the moment and want to start to debug it. My initial guess would be congestion, but I don't know how to start to look for this on my 3750 switches.
Could somebody please point me in the right direction and list some commands I can run and possibly how to store the debug info aswell.
Many Thanks
Dan
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02-08-2007 06:16 AM
I would start with installing MRTG
or another bandwith monitor tool. Then let it run for a couple of days towards your switch. To see if you actually have problems with packet forwarding or speed.
Another fine tool is simply show interface Fast 0/1 etc. Look for CRC and interface reset. A high number of that on any interface might point to a faulty port or NIC. Or something as simple as a duplex/speed mismatch.
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