NIC settings/switch settings mismatch

[JenC]

remote office:
Have a server storing radiology images. Two workstations connecting to this server. One workstation becomes very sluggish and we have done the following to determine issue.

1. swapped out pc that is sluggish with new one. Same problem occured.
2. Changed ports on the (Nortel)2000 switch with the pc that does not become sluggish. Same problem occured.
3. Locked down nics to 100 full duplex (consistant with all the installations in remote sites as well as main site) and locked down ports on (Nortel)2000 switch to 100 full duplex. Life gets horrible for all at this point. Set the switch to autonegotiate and the locked down nics auto negotiate to 100 - half, although they are set to 100 - full (?). Swap out (Nortel)2000 switch .. same problem occurs.
4. Have ruled out cabling.
5. Application vendor has ruled out the server.
6. The workstation that struggles has a video card installed and onboard nic. Have installed new nic with same issue.

Other notes: application uses host file. There is a T1 b/w this remote site and main campus (no errors on T1 and issue appears to be local)3com 462T router.

Any thoughts would be appreciated.

 

[4work]

Try setting both sides to 10/Half. I could be that when you set it to 100/Full you just increase the problem with more bandwidth. Try to ping from one PC to the other using 1500 byte packets and see what kind of response you get locally. If the response turns out to be good then try the same thing to the switch. Have you checked the resources on the 'bad' PC?