How do S series switches perform ARP attack defense for static users

For S series switches:
Static users are users configured with static IP addresses, for example, static IP addresses are assigned to dumb terminals such as printers and servers. Attackers usually use the IP address of an authenticated user to connect to the network and initiate ARP attacks, damaging network communications.
To defend against ARP attacks, static users can be configured with a static binding table and the DAI function to enable the switch check the ARP packets against the binding table.
The static user binding table can be configured using the user-bind static command. The DAI function can be enabled using the arp anti-attack check user-bind enable command.
When a switch receives an ARP packet, it compares the source IP address, source MAC address, VLAN ID, and interface number of the ARP packet with static binding entries. If the ARP packet matches a binding entry, the device considers the ARP packet valid and relays the packet. If the ARP packet does not match any binding entry, the device considers the ARP packet invalid and discards the packet.

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