Which option is the best practice recommendation for Spanning tree configuration in a vPC environment?

Question

Options

• ADisable rapid PVST or MST on all switches in the Layer 2 domain to avoid slow STP convergence
• BDisable the BPDU filter on the edge devices to avoid BPDU propagation
• CDisable Bridge Assurance feature on vPC links.
• DDisable Portfast (edge port type. on host-facing interfaces to avoid slow STP convergence

• A
  6% (3)
• B
  4% (2)
• C
  80% (43)
• D
  11% (6)

Explanation

Bridge Assurance is a Cisco STP enhancement that sends BPDUs on all ports in both directions to verify bidirectional connectivity. However, in a vPC environment, disabling Bridge Assurance on vPC peer links is a best practice because the vPC peer link carries traffic for multiple VLANs and the Bridge Assurance behavior can interfere with correct vPC operation, potentially causing loops or incorrect port state transitions. Rapid PVST+ or MST should remain enabled (not disabled). BPDU filter should be applied carefully only on true edge ports. Portfast should be enabled (not disabled) on host-facing interfaces to eliminate STP convergence delay for end hosts.

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