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Chapter 6 CLI – Layer 3
150 P332G-ML User’s Guide
arp timeout Command
Use the arp timeout command to configure the amount of time that an entry
remains in the ARP cache. To restore the default value, 14400, use the no form of
this command.
The syntax for this command is:
arp timeout <seconds>
The syntax for the no form of this command is:
no arp timeout
Example:
To set the arp timeout to one hour:
Router-N(configure)# arp timeout 3600
To restore the default arp timeout:
Router-N(configure)# no arp timeout
clear arp-cache Command
Use the clear arp-cache command to delete all dynamic entries from the ARP
cache and the IP route cache.
The syntax for this command is:
clear arp cache[<vlan>|<ip addr>[<mask>]]
Example:
clear arp-cache flush all arp entries
clear arp-cache marketing_vlan flush ARP entries for a VLAN
clear arp-cache 192.168.0.0 255.255.0.0 flush range of ARP entries
belonging to one subnet
seconds The amount of time, in seconds, that an entry remains
in the arp cache.
vlan VLAN string (up to 16 characters
ip addr IP address
mask IP mask