Cisco Catalyst 3120 Command Reference Guide

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Cisco Catalyst Blade Switch 3120 for HP Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3120 for HP Cisco IOS Commands
ip arp inspection limit
The rate limit is calculated separately on each switch in a switch stack. For a cross-stack EtherChannel,
this means that the actual rate limit might be higher than the configured value. For example, if you set
the rate limit to 30 pps on an EtherChannel that has one port on switch 1 and one port on switch 2, each
port can receive packets at 29 pps without causing the EtherChannel to become error-disabled.
The rate of incoming ARP packets on EtherChannel ports equals the sum of the incoming rate of ARP
packets from all the channel members. Configure the rate limit for EtherChannel ports only after
examining the rate of incoming ARP packets on all the channel members.
Examples This example shows how to limit the rate of incoming ARP requests on a port to 25 pps and to set the
interface monitoring interval to 5 consecutive seconds:
Switch(config)# interface gigabitethernet1/0/1
Switch(config-if)# ip arp inspection limit rate 25 burst interval 5
You can verify your settings by entering the show ip arp inspection interfaces interface-id privileged
EXEC command.
Related Commands Command Description
show inventory
interfaces
Displays the trust state and the rate limit of ARP packets for the specified
interface or all interfaces.

Cisco Catalyst 3120 Specifications

General

Brand	Cisco
Model	Catalyst 3120
Category	Switch
Language	English