Hello Attila
This paragraph may need to be modified slightly to more correctly describe the situation. You are correct that if the port that fails is connected to an end device (i.e. it’s an edge port) then no topology change notification will be sent.
Remember, STP will send out a TCN when there is a failure on the active path. So maybe a more appropriate statement would be:
With the classic spanning tree a link failure along the active path would trigger a topology change.
Or more simply, a link failure between switches, or a link failure other than links connected to end devices.
In any case, thanks for making this clarification. I will let Rene know to consider making any necessary modifications to the content.
I hope this has been helpful!
Laz