chenzovicc
asked on
Run wireshark to detect slowness on SMB and printing
Hi Experts,
I purchased a wireshark book ans still I am not very familiar on how to identify the cause of slowness on SMB access files and printing running wireshark,
Can you please explain to me what to look for when running wireshark?
Thanks
I purchased a wireshark book ans still I am not very familiar on how to identify the cause of slowness on SMB access files and printing running wireshark,
Can you please explain to me what to look for when running wireshark?
Thanks
SOLUTION
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Plug in meaning at each location the wires were there.
Check what speed the systems are connected at.
I.e. Used to be 1GB now 100MB
Speedtest.net has a mini version that you can use by placing it in a system that has a web server (iis with or without php) and test the transfer rate.
How the switch/router were setup, if VLANed, connections might have not maintained....
Slowness with the same server/workstation/switche
Properties of the network card should reflect the rate at which it operates/negotiated.
Usually on a 1GB connection using the speed test you should see 80-90Mbytes upload and download in the test.
If the networking cabling is deficient the transfer performance rate will suffer and reflect it.
Check what speed the systems are connected at.
I.e. Used to be 1GB now 100MB
Speedtest.net has a mini version that you can use by placing it in a system that has a web server (iis with or without php) and test the transfer rate.
How the switch/router were setup, if VLANed, connections might have not maintained....
Slowness with the same server/workstation/switche
Properties of the network card should reflect the rate at which it operates/negotiated.
Usually on a 1GB connection using the speed test you should see 80-90Mbytes upload and download in the test.
If the networking cabling is deficient the transfer performance rate will suffer and reflect it.
ASKER
I checked the wire connection on both locations, checked router, switch interfaces and we have no errors on the interfaces. I will narrow down to either the cable speed or cabling or the wiring is badly done. Can wireshark see cable issues?
Possibly by receiving retransmitted packets that were delayed.
What is the reflected connected rate on the network card 1GB or 100MB?
Interface errors are separate issue.
Do you have a network test tool i,e. You connect a loop on one end and run the tool test from the other?
What is the reflected connected rate on the network card 1GB or 100MB?
Interface errors are separate issue.
Do you have a network test tool i,e. You connect a loop on one end and run the tool test from the other?
ASKER
Unfortunately I am not in the Location and I won't be there at all. It's mostly remotely that I have to try to fix the issue. It's a 1GB connection and they connect through a cisco ip phone. The phone runs 1GB.
ASKER CERTIFIED SOLUTION
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What's the switch?
Most high end switches have a status reporting system that will give you a readout of any errors.
Most high end switches have a status reporting system that will give you a readout of any errors.
ASKER
3750
ASKER
The problem has been solve and the issue was a Profile issue and once the profile was recreated the issue was fix. I troubleshoot all the devices in between and QOS as well and my last resource was to recreate the profile and BINGO.
Thanks guys for all your suggestions
Thanks guys for all your suggestions
ASKER
This computers were in a different location and this issues started after they were moved.
We just transfer the same equipment to the new location and plug it the same way.