show interface
25-2 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 25-1:
C3(su)->router#show interface
Vlan 1 is Administratively DOWN
Vlan 1 is Operationally DOWN
Internet Address is 10.10.1.1 , Subnet Mask is 255.255.255.0
Mac Address is: 001F.4554.EAA5
The name of this device is Vlan 1
The MTU is 1500 bytes
The bandwidth is 0 Mb/s
Encapsulation type Ethernet
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
no shutdown 25-6
no ip routing 25-6
show running-config 25-7
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 24-1.
loopback loop-id (Optional) Displays interface information for a specific loopback interface.
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