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arp-timeout
This command sets the aging time for dynamic entries in the Address
Resolution Protocol (ARP) cache. Use the no form to restore the default.
Syntax
arp-timeout seconds
no arp-timeout
seconds - The time a dynamic entry remains in the ARP cache.
(Range: 300-86400; 86400 is one day)
Default Setting
1200 seconds (20 minutes)
Command Mode
Global Configuration
Command Usage
Use the show arp command to display the current cache timeout value.
Example
This example sets the ARP cache timeout for 15 minutes (i.e., 900 seconds).
clear arp-cache
This command deletes all dynamic entries from the Address Resolution
Protocol (ARP) cache.
Command Mode
Privileged Exec
Example
This example clears all dynamic entries in the ARP cache.
Console(config)#arp-timeout 900
Console(config)#
Console#clear arp-cache
This operation will delete all the dynamic entries in ARP Cache.
Are you sure to continue this operation (y/n)?y
Console#