Specifications

show interface
15-2 IP Configuration
show interface
Usethiscommandtodisplayinformationaboutoneormoreinterfaces(VLANsorloopbacks)
configuredontherouter.
Syntax
show interface [vlan vlan-id ] [loopback loop-id]
Parameters
Defaults
Ifinterfacetypeisnotspecified,informationforallroutinginterfaceswillbedisplayed.
Mode
Anyroutermode.
Examples
Thisexampleshowshowtodisplayinformationforallinterfacesconfiguredontherouter.Fora
detaileddescriptionofthisoutput,refertoTable 15‐1:
C3(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
Thisexampleshowshowtodisplayinformationforloopbackinterface1.
C3(su)->router#show interface loopback 1
Loopback 1 is Administratively UP
Loopback 1 is Operationally UP
Internet Address is 10.1.192.100 , Subnet Mask is 255.255.255.0
The name of this device is Loopback 1
The MTU is 1500 bytes
show running-config 15-6
no shutdown 15-7
no ip routing 15-7
For information about... Refer to page...
vlanvlan‐id (Optional)DisplaysinterfaceinformationforaspecificVLANinterface.
ThisinterfacemustbeconfiguredforIProutingasdescribedin“Pre‐
RoutingConfigurationTasks”onpage 14‐1.
loopbackloop‐id (Optional)Displaysinterfaceinformationforaspecificloopbackinterface.