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Beginner

Will there be an alternate port for each switch in the topology when using RSRP?

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?

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Enthusiast

Re: Will there be an alternate port for each switch in the topology when using RSRP?

 

"every switch will have an alternate port" - only if there is a other way to reach root. 

see

https://ccieblog.co.uk/spanning-tree/rstp-alternate-and-backup-ports

 

 

Regards, ML
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