Cisco Catalyst 4500 Series Configuration Manual page 1119

Chapter 2
Table 2-45
duplex Command
duplex auto
duplex half
duplex full
duplex half
duplex full
duplex full
Examples The following example shows how to set the interface speed to 100 Mbps on the Fast Ethernet
interface 5/4:
Switch(config)# interface fastethernet 5/4
Switch(config-if)# speed 100
The following example shows how to allow Fast Ethernet interface 5/4 to autonegotiate the speed and
duplex mode:
Switch(config)# interface fastethernet 5/4
Switch(config-if)# speed auto
Note The speed auto 10 100 command is similar to the speed auto command on a Fast Ethernet interface.
The following example shows how to limit the interface speed to 10 and 100 Mbps on the Gigabit
Ethernet interface 1/1 in auto-negotiation mode:
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# speed auto 10 100
The following example shows how to limit the speed negotiation to 100 Mbps on the Gigabit Ethernet
interface 1/1:
Switch(config)# interface gigabitethernet 1/1
Switch(config-if)# speed auto 100
Related Commands Command
duplex
interface (refer to Cisco IOS
documentation)
show controllers (refer to Cisco IOS
documentation)
show interfaces
System Action Using duplex and speed Commands
speed Command
speed auto
speed 10
speed 10
speed 100
speed 100
speed 1000
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
Resulting System Action
Autonegotiates both speed and duplex
modes
Forces 10 Mbps and half duplex
Forces 10 Mbps and full duplex
Forces 100 Mbps and half duplex
Forces 100 Mbps and full duplex
Forces 1000 Mbps and full duplex
Description
Configures the duplex operation on an interface.
Configures an interface type and enter interface
configuration mode.
Displays controller information.
Displays traffice on a specific interface.
speed
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