Actions->
<Add>: Create a trap manager.
<Edit>: Modify all items. When finished configuration, press ESC to go
back to the action menu line.
<Delete>: Delete a trap manager. After deleting an item, press <Save> to
complete the operation.
<Save>: Save all configured values.
<Quit>: Exit this page and return to previous menu.
4-4-3. GVRP
This page enables / disables the GVRP (GARP VLAN Registration
Protocol) support.
Press Space key to choose Enabled / Disabled.