I'm configuring a Hyper-V server (2008 R2) with two NICs. I'm trying to follow the MS best practice advice of leaving one NIC for the host OS. NIC #1 is used for the OS and has no associated virtual network. NIC #2 has a virtual network with "Allow management operating system to share this network adapter" unchecked. Both NICs are attached to the same physical switch.
From other PCs in the network, I can reach both the host and the guests without issue. However, between the host and the guests there is no connectivity.
Where should I begin to troubleshoot this?