I am having some difficulty with a HyperV host and I wanted to be sure that my understanding of how HyperV deals with NICs is correct.
The server has 3 NICs and 2 of them have been identified to HyperV through the Virtual Network Manager. Both also have the "Allow management operating system to share this network adapter" selected. I understand that the best practice says that this should not be selected, correct? If I deselect it, will that cause any loss of communication with the VMs?
One thing I don't understand is the listing of NICs in the Network Connections section of the Control Panel. I was of the understanding that, if you select the "Allow management ..." option, there will be 2 NICs listed in Network Connections - one to represent the physical NIC and the other to represent the virtual switch NIC for each NIC thus configured. On this server, though, that is only true for one of the NICs. The other NIC is only represented by the virtual NIC, not the physical one. Is that the way it is supposed to be?
The problem with this server that drew my attention in the first place is that it will work fine for a few weeks and then you lose the ability to access the host remotely. The NIC says that everything is fine but you can't ping out from it or access it at all. The only solution is to reboot it and it will be fine for another couple of weeks. Any suggestions as to what might cause this behavior?
Thanks
Bert