Disabling an Interface from Learning ARP Entries

If a user host connected to an interface initiates an ARP attack, ARP resources of the device may be exhausted. When a large number of dynamic ARP entries have been learned by an interface, disable the interface from learning more ARP entries on the gateway to ensure device security.

After dynamic ARP entry learning is disabled on an interface, the system will not automatically delete the ARP entries that were learned previously on this interface. Delete or retain these dynamic ARP entries as required.

If dynamic ARP entry learning is disabled on an interface, traffic forwarding may fail on this interface.