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How does an MST region send VLAN information through the PVST simulation mechanism to a switch that runs PVST+?

  • It sends out one PVST+ BPDU that maps all VLANs into VLAN1.
  • It sends out one PVST+ BPDU with the information from the IST.
  • It sends out multiple PVST+ BPDUs, one for each VLAN, plus the IST.
  • It sends out PVST+ BPDUs, one for each VLAN, using the information from the IST.
Answers Explanation & Hints:

The PVST simulation mechanism sends out PVST+ including RSTP BPDUs, one for each VLAN, using the information derived from the internal spanning tree (IST). This requires a mapping of one topology in IST to multiple VLANs toward the PVST link.

For more Questions and Answers:

CCNPv8 ENCOR ( Version 8.0) – Chapters 1 – 5: L2 Redundancy Exam Answers Full 100%

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