472 | IPv4 Addressing
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These entries do not age and can only be removed manually. To remove a static ARP entry, use the no arp
ip-address command syntax.
To view the static entries in the ARP cache, use the
show arp static command (Figure 253) in the EXEC
privilege mode.
Figure 21-7. show arp static Command Example
Enable Proxy ARP
By default, Proxy ARP is enabled. To disable Proxy ARP, use no proxy-arp command in the interface
mode.
To re-enable Proxy ARP, use the following command in the INTERFACE mode:
To view if Proxy ARP is enabled on the interface, use the
show config command in the INTERFACE
mode. If it is not listed in the show config command output, it is enabled. Only nondefault information is
displayed in the
show config command output.
Clear ARP cache
To clear the ARP cache of dynamically learnt ARP information, use the following command in the EXEC
privilege mode:
Command Syntax Command Mode Purpose
arp ip-address mac-address interface CONFIGURATION Configure an IP address and MAC address mapping
for an interface.
• ip-address: IP address in dotted decimal format
(A.B.C.D).
•
mac-address: MAC address in nnnn.nnnn.nnnn
format
• interface: enter the interface type slot/port
information.
Command Syntax Command Mode Purpose
ip proxy-arp
INTERFACE Re-enable Proxy ARP.
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#
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