Check LAN speed

[subalexandru]

Hi all, 

I have a problem with LAN environment, people complains that the network work slowly, the application also works slowly. 

I did a test with ftp server and the transfer rate was approx 5 Mb/s (I have transferred 150 MB) and the speed configuration on switch is : full duplex with 100. 

What should I test next? 

I have switches EOL/EOS from 2003. Can be this a problem?

Thank you!

[Sergey Lisitsin · Accepted solution]

Hi subalexandru,

First of all you need to find out where exactly is the problem. What applications people use and where are they located. You mentioned the FTP test. Were you downloading or uploading? Was it to the Internet or onto your local FTP server? Do you use any sort of network monitoring? If not I think it is a good time to start. Also, how many switches do you have and what is the topology? There are many questions to answer before you get to the root of the problem.

[subalexandru]

Hi Sergey,

The ftp test that I did it was between local ftp server. And yes, I am using a monitoring tool and the response time for switches , in average is 35-40 ms. 

I have 7 switches, from which 5 are EOL and 2 are up to date. 

The major problem is between Core Switch and 2 switches that are in different location from the Core Switch. The switches that are in the same building with core switch, everything is fine. 

[Sergey Lisitsin]

OK, the main thing you need to check is not the response time, but the error counters on the uplinks to the core switch. Also, have a look at what is the utilization on those links. Are they 100meg or 1Gig ports?