300-415 Question 195
Select 3A company has deployed Cisco SD-WAN to enhance its WAN performance. The network administrator is tasked with configuring application-aware routing to prioritize critical business applications such as voice and video traffic over the best-performing links. Which of the following configurations must the administrator implement to achieve this goal?
- A
Define an application-aware SLA class with specific performance thresholds for delay, loss, and jitter.
- B
Apply a data policy to direct traffic based on source and destination IP addresses.
- C
Configure performance monitoring on transport interfaces to collect real-time metrics.
- D
Create an application list that categorizes the critical applications based on DPI (Deep Packet Inspection).
- E
Enable BFD (Bidirectional Forwarding Detection) on all SD-WAN transport tunnels to monitor link availability.
Show answer and explanation
Correct answers: A, C, D
Explanation
To configure application-aware routing in Cisco SD-WAN, the administrator must define SLA classes with specific performance thresholds, enable performance monitoring to gather real-time metrics on link performance, and create application lists to identify and prioritize critical applications. These steps ensure that traffic for critical applications is routed over the best-performing links based on delay, loss, and jitter. Data policies and BFD, while useful for other purposes, do not directly contribute to application-aware routing.
- A. Correct.
Correct. Defining an SLA class with performance thresholds allows the SD-WAN solution to evaluate link performance and make routing decisions based on the defined parameters.
- B. Incorrect.
Incorrect. While data policies can direct traffic based on IP addresses, they are not used for application-aware routing, which focuses on application performance rather than IP-specific policies.
- C. Correct.
Correct. Performance monitoring collects real-time metrics such as delay, loss, and jitter, which are necessary for application-aware routing decisions.
- D. Correct.
Correct. Creating an application list allows the SD-WAN solution to recognize and prioritize specific applications using Deep Packet Inspection (DPI) capabilities.
- E. Incorrect.
Incorrect. While BFD monitors link availability and ensures fast failover, it does not specifically enable application-aware routing based on link performance metrics.