Command Line Interface Guide

416 Ethernet Configuration Commands
Example
The following example adds a description to the Ethernet port 5.
console(config)#interface gigabitethernet 1/0/5
console(config-if-1/0/5)# description RD_SW#3
duplex
Use the duplex command in Interface Configuration mode to configure the
duplex operation of a given Ethernet interface. To restore the default, use the
no form of this command.
Syntax
duplex {auto | half | full}
no duplex
Parameter Description
Default Configuration
Auto-negotiation is enabled by default on copper ports.
Command Mode
Interface Configuration (Ethernet) mode
User Guidelines
When both speed and duplex are configured to auto, auto negotiation is
enabled for the port. To disable auto-negotiation on a port, it is necessary to
enter both the speed and duplex commands without using the auto
Parameter Description
auto Auto negotiation is enabled for the port.
half Force half-duplex operation.
full Force full-duplex operation.
2CSPC4.X8100-SWUM100.book Page 416 Wednesday, August 29, 2012 6:23 PM