Layer 2 Switching Commands 374Syntaxip arp inspection limit {none | rate pps [burst interval seconds]}no ip arp inspection limit• none — To set no rate limit.• pps — The number of packets per second (Range: 0–300).• seconds — The number of seconds (Range: 1–15).Default ConfigurationThe default rate limit is 15 packets per second.The default burst interval is 1 second.Command ModeInterface Configuration (gigabitethernet, port-channel, tengigabitethernet,fortygigabitethernet) modeUser GuidelinesIf Dynamic ARP Inspection packets are received on a port at a rate thatexceeds the threshold for a specified time, that port will be diagnosticallydisabled. The threshold is configurable up to 300 pps, and the burst isconfigurable up to 15s long. The default is 15 pps and 1s burst.Use the no shut command to bring the port back in to service.Exampleconsole(config-if-Gi1/0/1)#ip arp inspection limit noneconsole(config-if-Gi1/0/1)#ip arp inspection limit rate 100 burst interval 2ip arp inspection trustThe ip arp inspection trust command configures an interface as trusted forDynamic ARP Inspection. Use the no form of this command to configure aninterface as untrusted.Syntaxip arp inspection trustno ip arp inspection trust
