1-10z Enable the port state auto recovery function on the ports of Switch A, and set the recovery intervalto 200 seconds.Network diagramFigure 1-4 ARP attack detection and packet rate limit configurationConfiguration procedure# Enable DHCP snooping on Switch A. system-view[SwitchA] dhcp-snooping# Specify Ethernet1/0/1 as the DHCP snooping trusted port and the ARP trusted port.[SwitchA] interface Ethernet1/0/1[SwitchA-Ethernet1/0/1] dhcp-snooping trust[SwitchA-Ethernet1/0/1] arp detection trust[SwitchA-Ethernet1/0/1] quit# Enable ARP attack detection on all ports in VLAN 1.[SwitchA] vlan 1[SwitchA-vlan1] arp detection enable[SwitchA-vlan1] quit# Enable the ARP packet rate limit function on Ethernet1/0/2, and set the maximum ARP packet rateallowed on the port to 20 pps.[SwitchA] interface Ethernet1/0/2[SwitchA-Ethernet1/0/2] arp rate-limit enable[SwitchA-Ethernet1/0/2] arp rate-limit 20[SwitchA-Ethernet1/0/2] quit# Enable the ARP packet rate limit function on Ethernet1/0/3, and set the maximum ARP packet rateallowed on the port to 50 pps.[SwitchA] interface Ethernet1/0/3[SwitchA-Ethernet1/0/3] arp rate-limit enable[SwitchA-Ethernet1/0/3] arp rate-limit 50[SwitchA-Ethernet1/0/3] quit