300-415 Question 193
Single answerA network engineer is tasked with configuring application-aware routing in a Cisco SD-WAN environment to ensure that high-priority applications such as video conferencing use a specific transport link with low latency and jitter. Which configuration step is required to achieve this?
- A
Define an application-aware SLA policy with thresholds for latency, jitter, and loss.
- B
Configure a centralized data policy to block non-critical applications.
- C
Apply a TLOC list to prioritize transport links in the device template.
- D
Enable BFD (Bidirectional Forwarding Detection) for all TLOC extensions.
Show answer and explanation
Correct answer: A
Explanation
Application-aware routing in Cisco SD-WAN allows traffic to be dynamically routed based on real-time network performance metrics such as latency, jitter, and packet loss. By defining an SLA policy with specific thresholds for these metrics, the SD-WAN solution can continuously monitor the performance of transport links and steer high-priority applications like video conferencing to the most optimal link.
- A. Correct.
Defining an application-aware SLA policy with thresholds for latency, jitter, and loss allows the SD-WAN fabric to monitor the performance of each transport link and dynamically steer traffic for high-priority applications to the best-performing link.
- B. Incorrect.
Configuring a centralized data policy to block non-critical applications is unrelated to application-aware routing. Data policies control traffic forwarding and security but do not monitor or optimize transport links dynamically.
- C. Incorrect.
Applying a TLOC list prioritizes transport links but does not consider real-time performance metrics like latency or jitter, which are essential for application-aware routing.
- D. Incorrect.
Enabling BFD helps detect link failures but does not contribute to application-aware routing or dynamic traffic steering based on SLA thresholds.