.: Portfast Top Related Articles
1). Cisco CCNP / BCMSN Exam Tutorial: Configuring PortFast And BPDU Guard
In your CCNA studies, you learned about PortFast and the trouble it can cause if configured on the wrong port! Suitable only for switch ports connected directly to a single host, PortFast allows a port running STP to go directly from blocking to forwarding mode.
A Cisco router will give you a warning when you configure PortFast:
SW1(config)#int fast 0/5
SW1(config-if)#spanning-tree portfast
%Warning: portfast should only be enabled on ports connected to a
single host.
Article tags: cisco, ccnp, certification, bpdu, guard, portfast, port, fast, switch, err-disabled, exam, pass