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300-415 · Question #257
300-415 Question #257: Real Exam Question with Answer & Explanation
The correct answer is A: queue 0. Control plane and BFD traffic, essential for network stability and quick convergence, are prioritized by being configured in queue 0 on a WAN Edge router.
Security and Quality of Service
Question
Which queue must an engineer configure for control and BFD traffic for convergence on a WAN Edge router?
Options
- Aqueue 0
- Bqueue 1
- Cqueue 2
- Dqueue 7
Explanation
Control plane and BFD traffic, essential for network stability and quick convergence, are prioritized by being configured in queue 0 on a WAN Edge router.
Common mistakes.
- B. Queue 1 is typically used for high-priority data applications like voice, not control plane protocols.
- C. Queue 2 is generally reserved for medium-priority data applications such as video, which is not suitable for critical control and BFD traffic.
- D. Queue 7 is commonly used for best-effort or scavenger traffic, which receives the lowest priority and would be detrimental to control and BFD traffic's performance.
Concept tested. SD-WAN QoS control plane prioritization
Topics
#QoS#Control Plane Traffic#BFD#Traffic Prioritization
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