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What is an advantage of using PVST+?

PVST+ separates an instance of RSTP(802.1w) for each VLAN

PVST+ reduces the CPU usage and memory demands

PVST+ switches elect a root bridge automatically to enhance bandwidth usage

PVST+ allows Layer 3 load balancing without loops with no configuration

PVST+ primary feature is the creation of a separate STP Instance per VLAN. Through careful planning this allows engineers to implement VLAN-Load-Balancing by having one VLAN forward traffic over links that are not forwarding frames in the another VLAN, and vice-versa



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