Cisco Nexus 5500 Series - duplex (interface)

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Cisco Nexus 5500 Series NX-OS Layer 2 Interfaces Command Reference
OL-27880-02
Chapter D Commands
duplex
duplex
To specify the duplex mode as full, half, or autonegotiate, use the duplex command. To return the system
to default mode, use the no form of this command.
duplex {full | half | auto}
no duplex {full | half | auto}
Syntax Description
Command Default None
Command Modes Interface configuration mode
Command History
Usage Guidelines The interface speed that you specify can affect the duplex mode used for an interface, so you should set
the speed before setting the duplex mode. If you set the speed for autonegotiation, the duplex mode is
automatically set to be autonegotiated. If you specify 10- or 100-Mbps speed, the port is automatically
configured to use half-duplex mode, but you can specify full-duplex mode instead. Gigabit Ethernet is
full duplex only. You cannot change the duplex mode on Gigabit Ethernet ports or on a
10/100/1000-Mbps port that is set for Gigabit Ethernet.
See the Cisco Nexus 6000 Series NX-OS Layer 2 Switching Configuration Guide, Release 6.0 for more
information on interface speed and duplex settings.
This command does not require a license.
Examples This example shows how to specify the duplex mode for full duplex:
switch# configure terminal
switch(config)# interface ethernet 1/5
switch(config-if)# duplex full
switch(config-if)#
full Specifies the duplex mode as full.
half Specifies the duplex mode as half.
Note This keyword is not supported on a management interface.
auto Specifies the duplex mode as autonegotiate.
Release Modification
5.2(1)N1(1) This command was introduced.