Working with Appliance Ports today… This is the best article I found. One note is bind the appliance port to Native VLAN when access.
It is good to modify a Network Control Policy for Appliance Ports. Set “Action on Uplink Fail” to “warning”.
Why do I need an active uplink to use an appliance port?
A YouTube I did “Back in the day” on Appliance Ports and iSCSI boot.