12.1.6 Rate-limiting ARP packets
The Switch discards ARP packets that exceed a predetermined reception rate during monitoring of received ARP packets when dynamic ARP inspection is enabled.
To set the reception rate, use the ip arp inspection limit rate configuration command. The reception rate has no limit if a limit has not been set with this command.
When a limit is applied to the ARP packet reception rate, the limit is applied to all the ARP packets received by the Switch.
The ARP packets exceeding the rate are discarded, and the incident is logged in the operation log. However, it does not send SNMP notifications. To check the information in the operation log, execute the show ip dhcp snooping logging operation command.
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(1) Trigger for collecting operation log information
The events logged in the operation log are the same as those logged when a limit is applied to the DHCP packet reception rate.
For details about the collection timing, see (1) Collection timing of operation log information for 12.1.3 DHCP packet-reception rate limiting.