I have a Windows 2008 R2 Server that works fine at the location where the server was configured. It obtains an IP4 address with no problem from our DHCP Server. It functions properly on our network.
We put the server at a different location. At this location it will not get on the network. It will not obtain an address from the DHCP server. If we hard code a STATIC address it will still not get on the network. Other new client computers (Win XP) have no problem obtaining ip4 addresses and getting on.
There is one other Win 2008R2 server that is our main server/dhcp server. This was working fine until about 3 months ago. We have tried 3 different servers, swapped cables, tried plugging into a different switch. If the server is put back on the original network, it works fine so we can rule out nay hardware /cfg issues with the server.