I have a windows server 2008 R2 functional level domain with two DC's - windows 2008 r2 and windows 2012 r2. Up until Monday of this week everything worked fine. I migrated our exchange system from exchange 2007 to 2010 about three weeks ago.
Still everything was fine. But this week all of a sudden we had issues with users connecting to a couple of db servers (2000 standard and 2003 server). From the network pinging the server works fine but sometimes it would not work. From the
servers they will all of a sudden stop pinging certain other servers but not all. My main concern is that I think active directory is inaccessible at times for these two server. If I do a 'arp -d *' then the ping will work and I am able to see
resources on the domain. When the ping does not work to the DC I cannot connect to resources. The arp clear will fix it momentarily but the issue always comes back. I have also noticed that my windows 10 pc was not running my login script
a few weeks ago because all my drive mappings were missing. I usually could get to them by using unc paths. After shutting down these two troubled servers I rebooted my pc and I notice my login script runs fine - every time. Any ideas?
I have moved all server to their own switch and then back again to no avail.
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