User Guide 612
Configuring ARP ARP Configurations
Step 1 configure
Enter global configuration mode.
Step 2 arp timeout
timeout
Configure the ARP aging time of the VLAN interface or routed port .
timeout:
Specify the value of aging time, which ranges from 1 to 3000 in seconds. The default
value is 600 seconds.
Step 3 end
Return to privileged EXEC mode.
Step 4 copy running-config startup-config
Save the settings in the configuration file.
This example shows how to configure the aging time of dynamic ARP entries as 1000
seconds for VLAN interface 2 :
Switch#configure
Switch(config)#arp timeout 1000
Switch(config)#end
Switch#copy running-config startup-config
■ Clearing Dynamic Entries
Step 1 configure
Enter global configuration mode.
Step 2 clear arp-cache
Clear all the dynamic ARP entries.
Step 3 copy running-config startup-config
Save the settings in the configuration file.
■ Renewing Dynamic Entries Automatically
Step 1 configure
Enter global configuration mode.
Step 2 arp dynamicrenwe
Clear all the dynamic ARP entries.
Step 3 copy running-config startup-config
Save the settings in the configuration file.
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