Spanning Tree PortFast causes an interface configured as a Layer 2
access port to enter the forwarding state immediately, bypassing the STP
listening and learning states. It is to be enabled only on access ports
connected to end devices.
Configure PortFast
To enable
PortFast on a Layer 2 access port, use this command:
Switch(config-if)#[no] spanning-tree
portfast
Verify PortFast
To display
interface information, including PortFast configuration, use this command:
Switch#show running-config interface
{{fastethernet | gigabitethernet} slot/port} |
{port-channel port_channel_number}