Hardware:
6 PC’s running Windows 2000 with static IP’s ( All PC’s have identical hardware and software, including NIC driver version. All are part of a domain.
1 Server running Server 2003 also static
1 Cisco 24 port switch
The Problem:
PC 1,2&5 are dropping network connection randomly a few times a day but PC 3,4&6 are fine. OS is running fine when this happenes, no lockups. Log on switch shows link flapping then drop. PC’s are unpingable.
Temporary solution:
A reboot will reestablish the connection but only for a few hours.
Recent Changes:
Server was replaced, originaly running 2000. Added new hardware and Server 2003. Ever since upgrade/replacement these PC’s have been having connectivity problems.
Event Log:
Only common event log errors of problem PC’s are Userenv and AutoEnrollment but not every share this error only about 90%. Possible DNS issue.
Impact:
This is happening at multiple locations (40 +) and the server upgrade seems to be the trigger.
Theory:
Possible some kind of SID problems. Or new server is allowing more TCP sessions flooding out PC’s capability and dropping comm.
Please help! =O