We have 2 AD controllers at 2 sites. They are both on the same subnet, connected via fiber relay between buildings (on a 10.0.10.* network). When the 'main' controller (ADSERVER1) goes down, the secondary one (ADSERVER2) appears to not be taking over authentication and DNS.
Our primary server went down this morning, and until I could get it back up, we had no DNS, and no authentication whatsoever.
How would I check to see if the ADSERVER2 is set to take over domain control when ADSERVER1 is down?