SBS

[AzDan]

Workstations randomyl drop network connection to local SBS 2008 server
Asked by qbarat2 in SBS Small Business Server, Microsoft Operating Systems, Network Analysis Software
I just installed a new SBS 2008 server to replace an SBS 2003. I created a new domain and joined all brand new (about 15) Windows 7 Pro PC's to the new domain controller/Active Directory. The server has been there for about a week and suddenly I am having problems where workstations randomly cut out their connection to the server. All workstations are using static IP's. When running a constant ping test from a workstation to the server it will randomly stop pinging for about 15-20 seconds and then starts up again by itself. It has been very difficult to pinoint the problem as the issues only happen on some workstations maybe 1-2 times per day. Today it happened on several workstations at the same time. The server is also configured as a SQL server, DNS, and DHCP, with folder redirection, mapped drives, and printers using group policies. When this issue happens it kicks the user out of the custom software which uses the SQL db and disrupts anything they may have open from the server through mapped drives. I suspected it may have been a network problem and rebooted all network equipment, updated firmware on router, etc. The only thing that makes me think it is not a network problem is the fact that this issue was not happening with the prior server/workstations.

Any ideas?

 

[markdmac]

On both the server and the workstations, run this command from an elevated command prompt:

net config server /autodisconnect:-1

Check your switch and see what the maximum speed is that it supports. If it is 100Mbps then set the NICs to be 100Mbps instead of Autonegotiate. You can often get problems like this if both the switch and the NIC are both set to Auto and your switch is probably configured for Auto.

I hope that helps.

Regards,

Mark

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