Allied Telesis AT-S63 - Manual (Page 380)

Chapter 23: Protected Ports VLANs
380 Section V: Virtual LANs
The switch creates the group and adds it to the VLAN Groups section
of the window.
15. Repeat steps 12 to 14 to create the other groups for the VLAN.
16. After you have assigned all of the ports in the VLAN to a group, click
the Apply button at the bottom of the window.
The management software will not allow you to create the VLAN until
all of the ports have been assigned to a group.
The new protected ports VLAN is now ready for network operations.
17. From the Configuration menu, select the Save Config option to
permanently save your changes. (This option is not displayed if there
are no changes to save.)