Speed Command on CISCO Router/Switch

Command

Speed

Use

This command is used to set the speed at which an interface opertates at.

Syntax

Router(config-if)#speed <number or auto>

Options

<number> Sets the interface to a given speed, can be 10, 100, 1000 depending on the interface type.
<auto> Will autonegotiate the speed of the interface.

Example

In this example we will change 2611XM’s Fa0/0 to operate at 10Mbs

2611XM(config-if)#do show interface fa0/0 | in TX
Auto-duplex, 100Mb/s, 100BaseTX/FX

2611XM(config)#int fa0/0
2611XM(config-if)#speed 10

2611XM(config-if)#do show interface fa0/0 | in TX
Full-duplex, 10Mb/s, 100BaseTX/FX

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