show ip arp
16-8 IP Configuration
show ip arp
UsethiscommandtodisplayentriesintheARP(AddressResolutionProtocol)table.ARP
convertsanIPaddressintoaphysical address.
Syntax
show ip arp [ip-address] [vlan vlan-id] [output-modifier]
Parameters
Defaults
Ifnoparametersarespecified,allentriesintheARPcachewillbedisplayed.
Mode
Anyroutermode.
Example
Thisexampleshowshowtousetheshowiparpcommand:
C2(su)->router#show ip arp
Protocol Address Age (min) Hardware Addr Type Interface
------------------------------------------------------------------------------
Internet 134.141.235.251 0 0003.4712.7a99 ARPA Vlan1
Internet 134.141.235.165 - 0002.1664.a5b3 ARPA Vlan1
Internet 134.141.235.167 4 00d0.cf00.4b74 ARPA Vlan2
C2(su)->router#show ip arp 134.141.235.165
Protocol Address Age (min) Hardware Addr Type Interface
------------------------------------------------------------------------------
Internet 134.141.235.165 - 0002.1664.a5b3 ARPA Vlan2
C2(su)->router#show ip arp vlan 2
Protocol Address Age (min) Hardware Addr Type Interface
------------------------------------------------------------------------------
Internet 134.141.235.251 0 0003.4712.7a99 ARPA Vlan2
Table 16‐2providesanexplanationofthecommandoutput.
ip‐address (Optional)DisplaysARPentriesrelatedtoaspecificIPaddress.
vlanvlan‐id (Optional)DisplaysonlyARPentrieslearnedthroughaspecificVLAN
interface.ThisVLANmustbeconfiguredforIProutingasdescribedin
“Pre‐RoutingConfigurationTasks”onpage 15
‐1.
output‐modifier (Optional)DisplaysARPentrieswithinaspecificrange.Optionsare:
–|beginip‐address—DisplaysonlyARPentriesthatbeginwiththe
specifiedIPaddress.
–|excludeip‐address—ExcludesARPentriesmatchingthespecified
IPaddress.
–|includeip‐address—IncludesARPentriesmatchingthespecified
IPaddress.