If I understand Portfast is used so that Computers will receive DHCP configuration ASAP, and for the port to skip blocking , learning, listening phases.
however if portfast is configured without other XXXGUARD configuration, then if a switch is plugged to the port it can cause a Loop.
I wonder why Cisco design it that way ?
it makes sense to tell a port that you are configured to only talk to computers and not to switches...just like Access port but with skipping blocking , learning, listening phases
Any comments on this ?