When is the Port Priority form of STP load balancing useful? What command(s) are used to implement this approach? What makes this technique so confusing?
This form of load balancing is rarely useful. It can only be used with back-to-back switches. It should only be used in early versions of code or when connecting to non-Cisco devices. The set spantr ee portvlanpri command is used to implement this feature. This technique can be very confusing because it requires that the set spantree portvlanpri command be entered on the upstream switch.