Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

Windows 2003 Server network slow..

Hi I was wondering if anybody else is having my problem. I an using the Catalyst 3525 xl switch..

I have a New Windows 2003 server on our NT 4.0 domain. When clients

access this server to run report or access files it is very slow..

Sometimes it takes a few seconds for the file to even open.. Sometimes

if you run a crystal reports file it fails.. I know the hardware is

good on this server because a had NT 4.0 server on this before w2k3 os

and it worked great.. no lock-ups at all.. I ran NT 4.0 on this server

as a file server for a year with no problems.. Now with w2k3 on it

acting as a file server it is very slow.. This is a fresh install of

w2k3.. I formated the drives installed 2003 and brought all the files

back and now the problems. I have upgraded the ethernet drivers,, and

changed switch ports,, same problems.. I even took it a step futher

and brought the files over to a Windows 2000 server we had, for a

day,, and we had no problems at all.. So its this w2ks server for sure

that is causing the problems.. Any thought


New Member

Re: Windows 2003 Server network slow..

Did you have any luck with this? I seem to be having similar issues.

Have you checked with Microsoft? Have you tried another switch or hub?


Re: Windows 2003 Server network slow..

you may be experiencing a TCP windowing problem;en-us;263088

New Member

Re: Windows 2003 Server network slow..

This could be related to a duplex mismatch. If the server and the switch are both set to auto, usually the switch kicks in at 100/half, and the server kicks in at 100/full.

Force both the switch and the server to 100/full and see if it makes a difference.