The Set-VNVMHostNetworkAdapterVDUplink cmdlet provides the ability to manage the VDSwitch Uplink for a VMHost physical NIC ("VMNIC") on the VDSwitch of which the VMNIC is already a part -- finally! (this is not yet available in a native cmdlet in PowerCLI, but I'm sure that VMware has it on their list).
The copious examples show all kinds of ways to use this module. Grab the module from the PowerShellGallery with the standard
Find-Module vNugglets.VDNetworking | Install-Module
that we all know and love (or, use Update-Module instead of Install-Module to update a previously installed version to current, of course).
Enjoy!