Running a HYPER-V host (Windows Server 2012 R2 Data Center), with 11 vm's connected via NIC Teaming connected to an Aruba 2920-48G Switch, 3 of the vm's are suddenly not able to connect (yellow explanation sign reads 'no Internet connection'). NIC cards shows no issues and NIC Teaming has all green up arrows. No issues in the event logs.
I removed the static IP's from the servers but they still won't connect to DHCP (with error 'unidentified'
I deleted the virtual NICs and recreated (same issue)
I checked DNS and there are no issues jumping out at me
I replaced all of the Ethernet cables on all NIC's on the server
I logged into the switch and didn't see any issues
I have never seen anything like this. Is there another area that I should be looking at? My fear is that more servers will lose connection and I am at a loss as to why.