CCIE Data Center (legacy) — Question 60

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

Answer options

• A. Disable PortFast (edge port type) on host-facing interfaces to avoid slow STP convergence.
• B. Disable the BPDU Filter on the edge devices to avoid BPDU propagation.
• C. Disable Rapid PVST or MST on all switches in the Layer 2 domain to avoid slow STP convergence.
• D. Disable the Bridge Assurance feature on vPC links. D

Correct answer:

Explanation

The correct answer is A, as disabling PortFast on host-facing interfaces helps ensure that STP can properly converge and prevent loops. Options B and D are not best practices for vPC configurations, as BPDU filtering can cause issues with topology changes, and Bridge Assurance is typically beneficial for maintaining loop-free topologies. Option C is incorrect because Rapid PVST and MST can be used effectively with vPCs if configured properly.