This ended up being a vm guest on the server that would pop up on the network with the same IP as the one drac was set to...  So no problems with DRAC but with the person configuring it.. Thanks, Ovidiu
Good day, I have a weird issue with the DRAC on a r720xd - it will randomly freeze ( on the console screen it then says connection lost ) and the web interface is no longer responding for a while, then all is back to normal again. It is not a layer 2 issue nor layer 3 as I can still ping the IP of the drac from another server that has access to that same subnet. Also a telnet to ports 5900 /443 fails during that time - so I can't say for sure that it's the upstream firewall keeping any stale connections (I'm accessing the drac via a static NAT that allows communication on ports 22/443/5900 TCP.  Is there something that I'm missing or not seeing here that could account for this odd behavior? Any help would be appreciated. Thank you! Ovidiu  
R720xd DRAC7 losing connection intermittently 