Interfaces | 275
shutdown
Disable an interface.
Syntax
shutdown
To activate an interface, enter no shutdown.
Defaults
The interface is disabled.
Command Modes
INTERFACE
Command
History
Usage
Information
The shutdown command marks a physical interface as unavailable for traffic. To discover if an 
interface is disabled, use the show ip interface brief command. Disabled interfaces are listed as down.
Disabling a VLAN or a port channel causes different behavior. When a VLAN is disabled, the Layer 3 
functions within that VLAN are disabled. Layer 2 traffic continues to flow. Entering the shutdown 
command on a port channel disables all traffic on the port channel and the individual interfaces within 
the port channel. To enable a port channel, you must enter no shutdown on the port channel interface 
and at least one interface within that port channel. 
The shutdown and description commands are the only commands that you can configure on an 
interface that is a member of a port channel.
Related
Commands
speed (for 1000/10000/auto interfaces)
Set the speed for 1000/10000 Base-T Ethernet interfaces. Both sides of a link must be set to the same 
speed (1000/10000) or to auto or the link may not come up.
Syntax
speed {1000 | 10000 | auto} 
To return to the default setting, use the no speed {1000 | 10000 | auto} command.
Parameters
 
Defaults
auto
Command Modes
INTERFACE
Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module
interface port-channel Creates a port channel interface.
interface vlan Creates a VLAN.
show ip interface
Displays the interface routing status. Add the keyword 
brief to display a table 
of interfaces and their status.
1000 Enter the keyword 1000 to set the interface’s speed to 1000 Mb/s.
10000 Enter the keyword 10000 to set the interface’s speed to 10000 Mb/s.
(Auto-negotiation is enabled. See negotiation auto for more information)
auto Enter the keyword auto to set the interface to auto-negotiate its speed.
(Auto-negotiation is enabled. See negotiation auto for more information)