What is an advantage of PVST+?

What is an advantage of PVST+?

  • PVST+ requires fewer CPU cycles for all the switches in the network.
  • PVST+ reduces bandwidth consumption compared to traditional implementations of STP that use CST.
  • PVST+ optimizes performance on the network through autoselection of the root bridge.
  • PVST+ optimizes performance on the network through load sharing.
    Answers Explanation & Hints:

    PVST+ results in optimum load balancing. However, this is accomplished by manually configuring switches to be elected as root bridges for different VLANs on the network. The root bridges are not automatically selected. Furthermore, having spanning-tree instances for each VLAN actually consumes more bandwidth and it increases the CPU cycles for all the switches in the network.

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