My company has just moved to a Windows Domain using Server 2012 Essential. We have a remote office that connects to our main office via a router to router VPN connection. The main office network is 192.168.200.x and the remote office is 192.168.201.x. I have been able to add the remote workstations to the domain and users can login with their domain accounts.
Randomly remote office workstations will disconnect from the domain network. The network icon in the tray shows the workstation connected to sse.local when it is on the domain and a generic network 3 when it is not able to access network resources.
We have found when a workstation's trust to the domain is lost that if the workstation's IP address is changed it will again show as on network sse.local and the user has no difficulty accessing shares and other domain resources. This happens a few times
a week to each of the workstations in the remote office. If we attempt to reuse an IP address that has previously lost connectivity to the domain the workstation will still not connect to the domain network (we must use a previously unaffected IP address).
I have tried DHCP, DHCP reservations, and static IP address for the workstations and each eventually exhibits this problem. We have six workstations in the remote office and limited bandwidth in the main office (1.8mbs upload) which may be the main culprit to this issue. We are using Cisco SB RV042 routers for our VPN connection. The Domain Controller IP is 192.168.200.201, and the DNS servers to the workstations are Primary= 192.168.200.201 and Secondary= 192.168.201.1 (remote office router).
Any insight is appreciated.