Allied Telesis AT 8000/8POE - Manual (Page 281)

AT-S81 Management Software User’s Guide
Section II: Web Browser Interface 281
Note
If you specify a PVID that does not correspond to any VIDs on the
switch, the management software creates a new VLAN with a VID
that equals the PVID. The VLAN is not assigned any name.
3. Click Apply.
4. Repeat steps 2 and 3 to change the PVID values of other ports.