Specifications

Reviewing and Configuring the ARP Table
15-12 IP Configuration
Reviewing and Configuring the ARP Table
Purpose
ToreviewandconfiguretheroutingARPtable,toenableproxyARPonaninterface,andtoseta
MACaddressonaninterface.
Commands
ThecommandsusedtoreviewandconfiguretheARPtablearelistedbelow:
show ip arp
UsethiscommandtodisplayentriesintheARP(AddressResolutionProtocol)table.ARP
convertsanIPaddressintoaphysical address.
Syntax
show ip arp [ip-address] [vlan vlan-id] [output-modifier]
Parameters
Defaults
Ifnoparametersarespecified,allentriesintheARPcachewillbedisplayed.
Mode
Anyroutermode.
For information about... Refer to page...
show ip arp 15-12
arp 15-14
ip proxy-arp 15-15
arp timeout 15-15
clear arp-cache 15-16
ip‐address (Optional)DisplaysARPentriesrelatedtoaspecificIPaddress.
vlanvlan‐id (Optional)DisplaysonlyARPentrieslearnedthroughaspecificVLAN
interface.ThisVLANmustbeconfiguredforIProutingasdescribedin
“Pre‐RoutingConfigurationTasks”onpage 14‐1.
output‐modifier (Optional)DisplaysARPentrieswithina
specificrange.Optionsare:
–|beginip‐address—DisplaysonlyARPentriesthatbeginwiththe
specifiedIPaddress.
–|excludeip‐address—ExcludesARPentriesmatchingthespecified
IPaddress.
–|includeip‐address—IncludesARPentriesmatchingthespecified
IPaddress.