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21-12
Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 21 Configuring Dynamic ARP Inspection
Configuring Dynamic ARP Inspection
To return to the default rate-limit configuration, use the no ip arp inspection limit interface
configuration command. To disable error recovery for dynamic ARP inspection, use the no errdisable
recovery cause arp-inspection global configuration command.
Performing Validation Checks
Dynamic ARP inspection intercepts, logs, and discards ARP packets with invalid IP-to-MAC address
bindings. You can configure the switch to perform additional checks on the destination MAC address,
the sender and target IP addresses, and the source MAC address.
Step 5
errdisable recovery cause
arp-inspection interval interval
(Optional) Enable error recovery from the dynamic ARP inspection
error-disable state.
By default, recovery is disabled, and the recovery interval is 300
seconds.
For interval interval, specify the time in seconds to recover from the
error-disable state. The range is 30 to 86400.
Step 6
exit Return to privileged EXEC mode.
Step 7
show ip arp inspection interfaces
show errdisable recovery
Verify your settings.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose