interface
Configure a physical interface on the switch.
C-Series, E-Series, S-Series, Z-Series
Syntax
interface interface
Parameters
interface
Enter one of the following keywords and slot/port or number 
information:
• For 100/1000 Ethernet interface, enter the keyword 
GigabitEthernet followed by the slot/port information.
• For a 1-Gigabit Ethernet interface, enter the keyword 
GigabitEthernet followed by the slot/port information.
• For SONET interfaces, enter the keyword sonet followed by 
the slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword 
TenGigabitEthernet followed by the slot/port 
information.
• For a 40-Gigabit Ethernet interface, enter the keyword 
fortyGigE followed by the slot/port information.
Defaults Not configured.
Command Modes CONFIGURATION
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.5.1.0 Added support for 4-port 40G line cards on ExaScale.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
Version 6.4.1.0 Introduced
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.
Example
FTOS(conf)#interface gig 0/0
FTOS(conf-if-gi-0/0)#exit#
Related 
Commands
interface loopback – configures a Loopback interface.
interface null – configures a Null interface.
interface port-channel – configures a port channel.
interface vlan – configures a VLAN.
699