300-415 Question 256
Single answerAn enterprise has implemented Cisco SD-WAN and configured queuing policies to prioritize voice traffic across the MPLS and internet transport links. Users, however, are reporting poor voice quality during peak traffic periods. Upon reviewing the configuration, you notice that the priority queue for voice is configured but the bandwidth allocation seems insufficient. What should be done to improve the voice quality while ensuring other traffic types are not excessively impacted?
- A
Increase the bandwidth allocation for the priority queue dedicated to voice traffic.
- B
Disable the priority queue for voice traffic and rely on default queuing.
- C
Configure a low-latency queue for voice traffic with a guaranteed bandwidth.
- D
Reduce the bandwidth allocation for other traffic classes to prioritize voice.
Show answer and explanation
Correct answer: A
Explanation
To improve voice quality during peak traffic periods, it is essential to ensure the priority queue has sufficient bandwidth allocated to meet the needs of voice traffic. By increasing the bandwidth allocation for the voice priority queue, the enterprise can ensure voice packets are processed with higher priority, ensuring low latency and jitter. This approach maintains the integrity of other traffic classes by preserving their bandwidth allocations while addressing the specific issue with voice traffic.
- A. Correct.
This is the correct option because increasing the bandwidth allocation for the priority queue dedicated to voice traffic can provide the necessary resources to improve voice quality while respecting the queuing policy.
- B. Incorrect.
Disabling the priority queue would negatively impact voice traffic since default queuing would not adequately prioritize it, leading to poor performance.
- C. Incorrect.
Configuring a low-latency queue is an alternative approach but typically overlaps with the functionality of a priority queue for voice traffic in Cisco SD-WAN, making this unnecessary.
- D. Incorrect.
Reducing the bandwidth for other traffic classes could lead to performance issues for those classes and is not a balanced solution.