This set of directions will show you how to view your network and disagnose issues
1. Go to vSphere > Network
2. Select a Switch (We selected the Prod Switch)
3. Go to Configure > Topology
You can check on the health by clicking on "Health Check"
You can see which hosts are using the uplinks
1. Go to vSphere > Hosts and Clusters > Select a Group (We selected the Prod-1 group) > Select a VM
2. Click on "Configure" > Networking > Physical Adapters
3. You can see that the uplink is missing
If you hover over the >>, it says open, because it's not used