Users Guide
• Entering a text string after the description command overwrites any previous text string that you 
previously congured as the description.
• The shutdown and description commands are the only commands that you can congure on an 
interface that is a member of a port-channel.
• Use the show interfaces description command to display descriptions congured for each 
interface.
duplex (10/100 Interfaces)
Congure duplex mode on any physical interfaces where the speed is set to 10/100.
Syntax
duplex {half | full}
To return to the default setting, use the no duplex command.
Parameters
half Enter the keyword half to set the physical interface to transmit only in one 
direction.
full Enter the keyword full to set the physical interface to transmit in both directions.
Defaults Not congured.
Command Modes INTERFACE
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell 
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.4.1.0 Introduced
Usage Information This command applies to any physical interface with speed set to 10/100.
NOTE: Starting with Dell Networking OS version 7.8.1.0, when you use a copper SFP2 module with 
catalog number GP-SFP2-1T in the S25P model of the S-Series, you can manually set its speed 
with the speed command. When you set the speed to 10 Mbps or 100 Mbps, you can also execute 
the duplex command.
Related Commands
negotiation auto — enables or disables auto-negotiation on an interface.
Interfaces
663










