Problem with LAN speed
Posted on 2008-10-14
Small office, 6 computers and 1 ProLian G3 SBS 2003 server expirencing slow network.
Router is Linksys WRS4400N Gigabit security and they have Linksys 16 port 10/100/1K SR2016 switch. All connectet with Cat 5 RJ45.
Server and two workstations have 1G network card, other workstations have 10/100 network cards. All workstations have Windows XP pro.
680MB of data transferred from server to 10/100 workstation takes 20 min and network utilization is all over, from 1% up to 26%. Jumps up and down, but I would say average would be around 12% to 15%. CPU usage from 3% to 10% on work station and 1% to 5% on the server. Transferring 680MB of data from one hard drive to second hard drive on server took about 30 sec, maybe little less.
Transferring 4.5G from server to 1K workstation took about 4min. Network utilization was from 2% to 5%.
I believe all that should be a lot faster. I believe that 680MB should not take longer the 2 4 min and 4.5G should be done in less than min.
I have use wireshark to capture network traffic, but do not understand much. I would be happy to send someone a log if possible. It is 10MB so I can not attache it.
Please help me understand what is going on and what I should look for to fix it. Computers have antivirus programs. One computer is in other building and they pool cable underground and I believe it is at least 150 if not longer. They notice slow response using Business Vision week ago and before was ok.
Any suggestion will be greatly appreciated.
Thank you :)