Configuration Guide     565
Configuring Network Security ARP Inspection Configurations
Step 6 ip arp inspection recover
(Optional) For ports which the speed of receiving ARP packets has exceeded the limit, use 
this command to restore the port from Discard status to Normal status.
Step 7 end
Return to privileged EXEC mode.
Step 8 copy running-config startup-config
Save the settings in the configuration file.
The following example shows how to enable ARP Defend and configure the ARP inspection 
limit-rate as 20 pps on port 1/0/2:
Switch#configure
Switch(config)#interface gigabitEthernet 1/0/2
Switch(config-if)#ip arp inspection
Switch(config-if)#ip arp inspection limit-rate 20
Switch(config-if)#show ip arp inspection interface gigabitEthernet 1/0/2
Port            OverSpeed    Rate    Current     Status        LAG
Gi1/0/2      Enabled          20        N/A             Normal       N/A
Switch(config-if)#end
Switch#copy running-config startup-config
The following example shows how to restore the port 1/0/1 that is in Discard status to 
Normal status:
Switch#configure
Switch(config)#show ip arp inspection interface
Port            OverSpeed    Rate    Current    Status                    LAG
Gi1/0/1      Enabled          15        N/A            Discard,290s       N/A
Gi1/0/2      Enabled          15        N/A            Normal                    N/A
......
Switch(config)#interface gigabitEthernet 1/0/1
Switch(config-if)#ip arp recover
Switch(config-if)#show ip arp inspection interface gigabitEthernet 1/0/1