Cisco WS-C3560E-24PD-E Command Reference - Page 139
show interfaces, speed
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Chapter 2 Catalyst 3560 Switch Cisco IOS Commands duplex Certain ports can be configured to be either full duplex or half duplex. Applicability of this command depends on the device to which the switch is attached. If both ends of the line support autonegotiation, we highly recommend using the default autonegotiation settings. If one interface supports autonegotiation and the other end does not, configure duplex and speed on both interfaces; do use the auto setting on the supported side. If the speed is set to auto, the switch negotiates with the device at the other end of the link for the speed setting and then forces the speed setting to the negotiated value. The duplex setting remains as configured on each end of the link, which could result in a duplex setting mismatch. Beginning with Cisco IOS Release 12.2(20)SE1, you can configure the duplex setting when the speed is set to auto. Caution Changing the interface speed and duplex mode configuration might shut down and re-enable the interface during the reconfiguration. For guidelines on setting the switch speed and duplex parameters, see the "Configuring Interface Characteristics" chapter in the software configuration guide for this release. Examples This example shows how to configure an interface for full-duplex operation: Switch(config)# interface gigabitethernet0/1 Switch(config-if)# duplex full You can verify your setting by entering the show interfaces privileged EXEC command. Related Commands Command show interfaces speed Description Displays the interface settings on the switch. Sets the speed on a 10/100 or 10/100/1000 Mbps interface. 78-16405-05 Catalyst 3560 Switch Command Reference 2-107