From the navigation tree, double-click Security.
In the Security tree, double-click Dynamic ARP Inspection (DAI).
In the work area, click the ARP Inspection-VLAN tab.
In the table, double-click the cell under the column heading ARPInspectionEnabled for a VLAN.
Select a value (true or false) to enable or disable ARP Inspection-VLAN.
Repeat the previous two steps for additional VLANs as required.
In the toolbar, click Apply.