Allied Telesis AT-GS950/24 - Manual (Page 172)

Chapter 13: Virtual LANs
172
to the port to enter the switch. Tagged frames are discarded at
ingress.
6. For the Ingress Filtering parameter, select one of the following
choices from the pull-down menu:
Enabled - This enables ingress filtering at the selected port.
Disabled - This disables ingress filtering at the selected port.
7. Click Apply.
The port configuration becomes effective.
8. If you need to configure other ports of the switch for the VLAN Port
Settings, repeat Step 4 through Step 7.
9. From the main menu on the left side of the page, select Save Settings
to Flash to permanently save your changes.