Spanning tree PORTFAST Explained | CCNA 200-301

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[joaogross]

Thank you for your explanation. One thing I still don't get: PortFast is destined to access ports or ports with devices connected. If a device is connected to that port I assume it is sending traffic through that port. So why would you need PortFast in an access port if the device is already communicating?

So, if I got it right, PortFast will only make a difference if you have an access port with no devices connected and you make a new connection to that port. Then the port would go to "Forwarding" state more quicker. Otherwise, with a device already connected, the port should already be in forwarding state. Is that correct? What have I been missing?

[victorjaramillo]

It's 15 seconds, not 20 seconds. I know you said that in your previous video, but I am just clarifying in case someone who doesn't see your previous video comes across this one.

Thank you for your content. You are a networking master.

Edit: Never mind. I see the Cost is 20.

By default, though, the transitional period between listening to learning, and learning to forwarding is 15 seconds, right?