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
speed
Speed and Duplex Combinations
Table 1-14 describes the interface behavior for various combinations of the duplex and speed command
settings. The specified duplex command configured with the specified speed command produces the
resulting system action.
If you decide to configure the interface speed and duplex commands manually, and enter a value (for
example, speed 10 or speed 100 ), ensure that you configure the connecting interface speed command to
a matching speed.
You cannot set the duplex mode to half when the port speed is set at 1000 and similarly, you cannot set
the port speed to 1000 when the mode is set to half duplex.
Caution Changing the interface speed and duplex mode might shut down and reenable the interface during the
reconfiguration.
Examples The following example specifies advertisement of 10 Mbps operation only, and either full-duplex or
half-duplex capability during autonegotiation:
Router# configure terminal
Router(config)# interface gigabitethernet 0/1
Router(config-if)# speed 10
Router(config-if)# duplex full
With this configuration, the interface advertises the following capabilities during autonegotiation:
• 10 Mbps and half duplex
• 10 Mbps and full duplex
Related Commands
Table 1-14 Relationship Between duplex and speed Commands
duplex Command speed Command Resulting System Action
duplex half speed 10 Forces 10-Mbps and half-duplex operation, and
disables autonegotiation on the interface.
duplex full speed 10 Forces 10-Mbps and full-duplex operation, and
disables autonegotiation on the interface.
duplex half speed 100 Forces 100-Mbps and half-duplex operation, and
disables autonegotiation on the interface.
duplex full speed 100 Forces 100-Mbps and full-duplex operation, and
disables autonegotiation on the interface.
duplex full speed 1000 Forces 1000-Mbps and full-duplex operation,
and disables autonegotiation on the interface
(Gigabit Ethernet only).
Command Description
duplex Configures the duplex operation on an interface.
interface gigabitethernet Selects a particular Gigabit Ethernet interface for configuration.

Cisco ASR 901 Specifications

General

Brand	Cisco
Model	ASR 901
Category	Network Router
Language	English