Reference Guide

612 | Interfaces
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Defaults
Not configured.
Command Modes
CONFIGURATION
Command
History
Example
FTOS(conf)#interface gig 0/0
FTOS(conf-if-gi-0/0)#exit#
Usage
Information
You cannot delete a physical interface.
By default, physical interfaces are disabled (shutdown) and are in Layer 3 mode. To place an
interface in mode, ensure that the interface’s configuration does not contain an IP address and
enter the switchport command.
Related
Commands
interface loopback
c e s
Configure a Loopback interface.
Syntax
interface loopback number
To remove a loopback interface, use the no interface loopback number command.
Parameters
Defaults
Not configured.
Command Modes
CONFIGURATION
Command
History
Example
FTOS(conf)#interface loopback 1655
Version 8.5.1.0 Added support for 4-port 40G line cards on ExaScale.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
Version 6.4.1.0 Introduced
interface loopback Configure a Loopback interface.
interface null Configure a Null interface.
interface port-channel Configure a port channel.
interface vlan Configure a VLAN.
show interfaces Display interface configuration.
number
Enter a number as the interface number.
Range: 0 to 16383.
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
Version 6.4.1.0 Introduced