show interface
17-2 IP Configuration
show interface
Usethiscommandtodisplayinformationaboutoneormoreinterfaces(VLANsorloopbacks)
configuredontherouter.
Syntax
show interface [vlan vlan-id]
Parameters
Defaults
Ifinterfacetypeisnotspecified,informationforallroutinginterfaceswillbedisplayed.
Mode
Anyroutermode.
Examples
Thisexampleshowshowtodisplayinformationforallinterfacesconfiguredontherouter.Fora
detaileddescriptionofthisoutput,refertoTable 17‐1:
B3(su)->router#show interface
Vlan 1 is Administratively DOWN
Vlan 1 is Operationally DOWN
Mac Address is: 0001.f4da.2cba
The name of this device is Vlan 1
The MTU is 1500 bytes
The bandwidth is 10000 Mb/s
Encapsulation ARPA, Loopback not set
ARP type: ARPA, ARP Timeout: 14400 seconds
interface
UsethiscommandtoconfigureinterfacesforIProuting.
Syntax
interface vlan vlan-id
Parameters
Defaults
None.
vlanvlan‐id (Optional)DisplaysinterfaceinformationforaspecificVLANinterface.
ThisinterfacemustbeconfiguredforIProutingasdescribedin“Pre‐
RoutingConfigurationTasks”onpage 16‐1.
vlanvlan‐id SpecifiesthenumberoftheVLANinterfacetobeconfiguredforrouting.
ThisinterfacemustbeconfiguredforIProutingasdescribedin“Pre‐
RoutingConfigurationTasks”onpage 16‐1.