I just installed a brand new HP server running MS Server 2012 Essentials in our office that functions as our only Domain Controller, DNS, DHCP, and File Server. Network traffic to and from the server (ie. File transfers) is extremely (painfully) sluggish. The server is running off of a Gigabit connection to a Gigabit switch and the XP clients are using a mixture of wired and wireless to access the server. Internet traffic works with our current router, only.
I am also attempting to replace our FortiGate 60 Router with a brand new FortiGate 60c Router. I have configured the router and fully tested it and it is performing extremely well. When I configured the new router, I assigned it the same IP Address as the old router (192.168.100.1/255.255.255.0). When I swap the routers out, the new Windows 2012 server loses actual internet connectivity (ie: Web surfing and pinging). Although, the connection is showing that “Internet” is functioning. If I hook a laptop directly to another LAN port on the router, the laptop can connect to the internet.
I have tried removing the Ethernet card drivers from the server and rebooting to reinstall them and that has not worked. I also reset the TCP/IP stack and Winsock and those did not work, too. Any thoughts on this matter????? I am truly stumped!
The Ethernet card on the server is setup as follows:
Static IP: 192.168.100.21
Subnet Mask: 255.255.255.0
Gateway: 192.168.100.1 (the router)
The DNS Server on the Windows Server 2012 box is setup to forward DNS queries to the Fortigate Router. The Router forwards queries to one of the two ISP DNS Servers.
What are your thoughts?????,
I should also mention that I just removed Quickbooks 2012 from the server thinking that that was causing some of our slowness. That only improved performance ever slightly. I only noticed the slowness after installing Quickbooks a week or so ago. The server ran great prior to that.