Reference Guide

– interface: enter the interface type slot/port information.
These entries do not age and can only be removed manually. To remove a static ARP entry, use the no arp ip-
address
command.
To view the static entries in the ARP cache, use the show arp static command in EXEC privilege mode.
Example of the show arp Command
FTOS#show arp
Protocol Address Age(min) Hardware Address Interface VLAN CPU
--------------------------------------------------------------------------------
Internet 10.1.2.4 17 08:00:20:b7:bd:32 Ma 1/0 - CP
FTOS#
Enabling Proxy ARP
By default, Proxy ARP is enabled. To disable Proxy ARP, use the no proxy-arp command in the interface mode.
To re-enable Proxy ARP, use the following command.
• Re-enable Proxy ARP.
INTERFACE mode
ip proxy-arp
To view if Proxy ARP is enabled on the interface, use the show config command in INTERFACE mode. If it is not
listed in the
show config command output, it is enabled. Only non-default information is displayed in the show
config command output.
Clearing ARP Cache
To clear the ARP cache of dynamically learnt ARP information, use the following command.
• Clear the ARP caches for all interfaces or for a specific interface by entering the following information.
EXEC privilege
clear arp-cache [interface | ip ip-address] [no-refresh]
– ip ip-address (OPTIONAL): enter the keyword ip then the IP address of the ARP entry you wish to
clear.
– no-refresh (OPTIONAL): enter the keywords no-refresh to delete the ARP entry from CAM. Or to
specify which dynamic ARP entries you want to delete, use this option with
interface or ip ip-
address.
– For a 1-Gigabit Ethernet interface, enter the keyword GigabitEthernet then the slot/port information.
– For a port channel interface, enter the keywords port-channel then a number.
– For a SONET interface, enter the keyword sonet then the slot/port information.
– For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then the slot/port
information.
– For a VLAN interface, enter the keyword vlan then a number between 1 and 4094.
– For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
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