STP uses cost and priority values to determine the best path to the Root Bridge. These values are then used in the election of the Root Port, which will be described in the following section. It is important to understand the calculation of the cost and priority values in order to understand how Spanning Tree selects one port over another, for example.
One of the key functions of the Spanning Tree Algorithm (STA) is to attempt to provide the shortest path to each switch in the network from the Root Bridge. Once selected, this path is then used to forward . . .
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