In Nexus1000v, the "VM-Uplink" ethernet port profile is set to "switchport truck allowed vlan 861-863" which is using vPC-HM with four vmnics, two sub-groups, two links to one upstream, and two for the another upstream switch . But on vCenter -> Home -> Inventory -> Networking -> then select the "Uplink" profile on left column of vSphere, then select "Ports" tab on main window, it shows three vmnics within under "VM-Uplink" profile show VLAN access:861-863, but one vmnics shows VLAN access: 1.
Supposed all vmnics within that port profile will show the same VLAN access:861-863. We fould that by removed and then re-add vmnic to that port profile "VM-Uplink", the VLAN status resumed normal from VLAN 1 back to VLAN 861-863.
It is still unknown about how to trigger this.
