I've been reading CCNA ICND2 200-105 and I noticed on the page 60 says that an alternate port is a port that could replace the root port.
Then on page 61, the topology shows that a port is a designated port and alternate port at the same time but is not in discarding state.
this is kind of confusing for me because thought that a block port was replaced by alternate port so an alternate port would always act as a block port, but it seems this is not correct.
so, I concluded this:
-not every alternate port will be in state discarding
-every switch will have an alternate port
-a designated port can also be an alternate port
Are these three last statements right?
