I'm running a free vSphere Hypervisor on a DELL Poweredge R420.
And in irregular intervals the network connection goes down !
The Windows 2012 domain controller VM shows limited connection and is not longer availible in the network.
When i restart the VM everything is fine for some days. (The other VM's also go offline...)
At first all VMs shared one phyiscal NIC, then the problems occurs once a day (not at a special time).
Later i moved the DC to the 2nd NIC, now the problem occurs approximately once a week.
I checked mac-adresses, IPs, energy and network settings...changed switches, cables...
May it be a NIC driver-problem ?
Does somebody has any ideas ?
THX
stulli