300-415 Question 194
Single answerAn enterprise is using Cisco SD-WAN to manage its branch office connectivity. The IT team wants to ensure that critical applications like voice and video traffic always use the best path based on real-time performance metrics such as latency, jitter, and packet loss. Which configuration step is essential to implement application-aware routing for these applications?
- A
Define a Data Policy to classify traffic and enforce path selection.
- B
Create a centralized Control Policy to prioritize application traffic.
- C
Configure SLA (Service Level Agreement) classes to define acceptable thresholds for latency, jitter, and packet loss.
- D
Set up a TLOC extension to improve transport redundancy for the applications.
Show answer and explanation
Correct answer: C
Explanation
Application-aware routing in Cisco SD-WAN relies on SLA classes to define performance thresholds for applications. These thresholds allow the system to monitor real-time metrics (latency, jitter, packet loss) and dynamically select the best-performing transport path for critical traffic. Without SLA classes, the SD-WAN fabric cannot determine how to measure or enforce application performance requirements effectively.
- A. Incorrect.
Defining a Data Policy is used for traffic classification and redirection purposes but does not directly implement application-aware routing.
- B. Incorrect.
A Control Policy is used to influence routing and topology decisions but does not enforce application-specific performance metrics.
- C. Correct.
Configuring SLA classes is essential for application-aware routing, as it allows the SD-WAN fabric to monitor and select the best path based on real-time performance data for specific traffic.
- D. Incorrect.
A TLOC extension provides transport redundancy but is not directly related to application-aware routing or monitoring performance metrics.