Command Reference Guide

3Com Router 5000 Family and Router 6000 Family duplex ● 149
Command Reference
duplex
Purpose Use the duplex command to configure the duplex mode of the Ethernet port.
Use the undo duplex command to restore the default duplex mode of the port,
that is, auto-negotiation.
Syntax duplex { full | half | negotiation }
undo duplex
Parameters full
The port is in full duplex mode.
half
The port is in half duplex mode.
negotiation
The port is in auto-negotiation mode.
Example Set duplex mode on port Ethernet1/0/1 to auto-negotiation.
[3Com -Ethernet1/0/1] duplex negotiation
View This command can be used in the following views:
■ Ethernet Port view
Description When the port is connected to a Hub, it must operate in half duplex mode. When the
port is connected to a full duplex-supported network device that is operating in full
duplex mode, a LAN switch for example, it must operate in full duplex also.
When setting the port to auto-negotiation mode, you must ensure that the
connected port is operating in the same mode. If otherwise, you must set both ports
to operate in the same mode manually.
Related Command speed