Running a vCenter 6.7 U3 / ESXi 6.7 U3 environment with several vDS, we are seeing abnormal behavior in vCenter where the virtual switches view is not showing any physical NICs attached to the uplink ports. All indications seem to be that networking wise, it is working normally on the backend and that this could be an issue with the web interface. Any suggestions on how to troubleshoot? Attached is a screenshot of the issue I am describing. Thanks.
Can you take a screenshot of Networking>Physical Adapters?
Is it showing the same status from flash based webclient and HTML?
Yes, it is consistent between the flash and HTML5 web clients.
It's seems to be just a GUI problem on vSphere web client. Did you try to open with another browser?
Run the following command to check and ensure about your vSphere Distributed Switch uplinks:
# esxcli network vswitch dvs vmware list