Cisco ASR 901 User Manual

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Cisco ASR 901 Aggregation Services Router Command Reference Guide
OL-26031-07
Chapter 1 CLI Command Reference
duplex
duplex
To configure duplex operation on an interface, use the duplex command in interface configuration mode.
Use the no form of this command to return to the default value.
duplex [ full | half ]
no duplex
Syntax Description
Defaults Full-duplex mode
Command Modes Interface configuration
Command History
Usage Guidelines
Duplex Options and Interfaces
Table 1-1 lists the supported command options by interface.
If the transmission speed on a 16-port RJ-45 Gigabit Ethernet port is set to 1000, the duplex mode is set
to full. If the transmission speed is changed to 10 or 100, the duplex mode stays at half duplex. You must
configure the correct duplex mode when the transmission speed is changed to 10 or 100 from 1000.
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 configured for Gigabit Ethernet.
When manually configuring the interface speed to either 10 or 100 Mbps, you should also configure the
duplex mode on the interface.
full Specifies full-duplex operation.
half Specifies half-duplex operation.
Release Modification
15.1(2)SNG Support for this command was introduced on the Cisco ASR 901 router.
Table 1-1 Supported duplex Command Options
Interface Type
Supported
Syntax Default Setting Usage Guidelines
Gigabit Ethernet
Interfaces
duplex full full
10-Mbps ports duplex [half |
full]
half
100-Mbps ports duplex [half |
full]
half

Cisco ASR 901 Specifications

General

Brand	Cisco
Model	ASR 901
Category	Network Router
Language	English