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duplex

Sets duplex mode for an interface.

Syntax
duplex [ full | half ]
 
no duplex
 
Prerequisites

Must be in interface configuration mode (config-if), which requires privileged-level access.

Occurrence

Use once per interface.

Default

Auto

Description

The duplex command with no keyword sets the mode to auto.

Both duplex and speed of an interface can be configured, but they are dependent on each other. If any one of them is set to auto, then both will be implemented as auto regardless of the setting of the other.

Changing either duplex or speed will bring the interface down and back up and you will lose Telnet or SSH connectivity. Changes to these modes should be done from a serial port connection.

See the speed command.


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