Allow All VLAN's on smart plus switch trunk ports, while still having native VLAN (PVID)

Currently, you can allow all VLAN's on a switch trunk port using basic 802.1Q mode.  In this mode you cannot set a PVID or native vlan on the switch port, and any untagged traffic falls into an unconfigurable dead-end VLAN 4094.

In advanced 802.1Q mode, you can set a PVID, or native VLAN on a trunk port, however to allow all VLAN's you have to configure each VLAN manually - up to a limit of 64.

Most vendors have an option to setup a trunk port to allow ALL VLANs, while setting a native VLAN on the port.

Use Case 1: Scalability.  You can deploy several switches in a network, and not have to manually add VLAN's to every switch when additional subnets are created.

Use Case 2: Troubleshooting tool or network tap.  You can insert this switch between a PoE device and an existing switch, and mirror the bi-directional traffic to a monitor port while maintaining the uplink to the existing switch.  Good when you don't know what VLAN's are in use on the existing equipment.