Spanning Tree Protocol, from a future CCNA`s perspective.


Hi guys, this post got awarded¬†“Best Publication” at the Cisco Support Community”!¬† Thanks a lot.

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A little bit of history:
Before we talk about Spanning Tree Protocol, let’s organize the different variants of STP. The original STP was developed by Radia Perlman while working for DCE back in 1990. At this time there were no switches yet, only bridges, but because bridges and switches technically do the same job -only switches do it more efficiently and have more features- they suffer from the same issues. Also, because STP was developed during a time when therewere only bridges, the terminology used in STP, even today, makes reference to bridges a lot (Root Bridge, Bridge-ID, etc.). So, when you read about STP from different sources, remember that the terms Switch and Bridge might be used interchangeably.

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