Just a cosmetic issue?? No, PortGroup and Uplink disconnected (on UI) not properly re-assigned after upgrade.

Issue

After an upgrade of the ESXi host from version 7.0.1 to 7.0.2 when the host came back on, the network was no longer properly connected to the DVS.
I then re-added the ESXi host to the various DVSs by reassigning the uplinks to the correct vmnic as originally.

Everything seemed to be working fine (ping, VMs were reachable, the host was properly managed by vCenter, vMotion was OK, then the host was able to mount iSCSI storage correctly etc) when I noticed ...

and ...

Solution

To solve the problem I had to re-assign the VMkernel adapters to the corresponding Portgroup even if they were already present.

So, I proceeded as follows ..

Right click with the mouse on DVS affected (The images below refer to a different DVS from that shown by the images above, however the procedure performed does not change).

Add and Manage Hosts...

Select Manage host networking and click Next

Click on Attached Hosts... select the host affected. Click OK and then Next until you get to session 4 Manage VMkernel adapter.

Select the vmk of the "On this switch" section (in my case, I start with vmk0 and then with the others) and click Assign portgroup.

Select the right portgroup and clik OK.

Do the same for the others vmks.

Click NEXT, NEXT and then FINISH.

As we can see now, from the image below a new "Port ID" has been assigned to the host and the "State" results with the Link Up.

But if I look into the Topology view, there is still something to fix ...

the Uplink1 and Uplink2 State for the host are still down ...

Connecting via SSH to the host, I check the status of the nic with the command

# esxcli network nic list

I observe, that unlike the graphical interface, the "Link Status" of vmnic20 and vmnic21 are Up.