PortFast allows a switch to place a port in forwarding state immediately when the port becomes physically
active. However, the only ports on which you can safely enable PortFast are ports on which you know that
no bridges, switches, or other STP devices are connected. Thus, PortFast is most appropriate for connections
to end-user devices. If you turn on PortFast for end-user devices, when an end-user PC boots, as soon as the
Ethernet card is active, the switch port can forward traffic. Without PortFast, each port must wait MaxAge
plus twice Forwarding Delay, which is 50 seconds with the default MaxAge and Forward Delay settings.