300-415 Question 260
Single answerA network administrator is configuring traffic shaping on a Cisco SD-WAN edge router to ensure that traffic for a critical application is prioritized and stays within the allocated bandwidth. The administrator has configured shaping to limit the bandwidth for a specific traffic class. Which outcome should the administrator expect when the traffic for this class exceeds the allocated bandwidth?
- A
Excess traffic will be queued and transmitted when bandwidth becomes available.
- B
Excess traffic will be dropped immediately.
- C
Excess traffic will be sent without any rate limiting.
- D
Excess traffic will trigger a dynamic adjustment of the allocated bandwidth.
Show answer and explanation
Correct answer: A
Explanation
Traffic shaping in Cisco SD-WAN is used to control traffic rates by queuing excess traffic and transmitting it later when there is available bandwidth. This ensures that the traffic remains within the allocated rate and avoids immediate packet drops, unlike policing, which drops excess traffic outright. The correct answer reflects the expected behavior of traffic shaping in Cisco SD-WAN.
- A. Correct.
Traffic shaping involves buffering excess traffic and transmitting it when bandwidth becomes available. This ensures that traffic stays within the allocated rate while avoiding packet drops.
- B. Incorrect.
This describes policing, not shaping. Traffic shaping queues excess traffic, while policing drops packets that exceed the configured rate.
- C. Incorrect.
Traffic shaping enforces rate limits by queuing excess traffic and does not allow traffic to bypass rate limiting.
- D. Incorrect.
Traffic shaping does not dynamically adjust the allocated bandwidth. It adheres to the predefined rate and uses queuing to manage excess traffic.