Strict - restricts addition of untagged port to a VLAN if that port is already in a VLAN. VLAN must first be removed from ALL VLANs before it can be added.
Automatic - Auto adds untagged port to new VLAN, removes it from ALL previous VLANs, and changes the PVID to the VID of the joint VLAN.
NOTE: Since it is first added to VLAN and THEN removed, STP group participation will not be disabled as long as the VLANs are in the same STP group.
AutoPVID - Untagged port is added to a new VLAN, port is added and VLAN and PVID are assigned to the new VID. Port is not removed from any previous VLAN memberships. Will be in multiple VLANs.
Flexible - Can be a member of multiple VLANs. New VLAN additions do NOT change the PVID of the port.
NOTE: Configcontrol determines how switch manipulates port VLAN assignments and PVID value assignments when ports are placed into VLANs.