300-415 Question 125
Select 3An enterprise is deploying Cisco SD-WAN and wants to ensure that site-to-site communication dynamically establishes IPSec tunnels without requiring manual intervention. How do dynamic tunnels ensure optimal performance and scalability in this scenario?
- A
Dynamic tunnels are established on-demand when data traffic between two sites is detected.
- B
Dynamic tunnels automatically adjust the MTU size to accommodate varying traffic types.
- C
Dynamic tunnels leverage overlay routing information from OMP (Overlay Management Protocol) to determine the best path.
- D
Dynamic tunnels require pre-configured static routes between all sites to function properly.
- E
Dynamic tunnels automatically tear down when no traffic flows for a defined period, conserving resources.
Show answer and explanation
Correct answers: A, C, E
Explanation
Dynamic tunnels in Cisco SD-WAN are a key feature for enabling scalable, efficient, and automated site-to-site communication. They are established on-demand when traffic is detected, leveraging OMP routing information to determine the best path. Additionally, these tunnels are designed to conserve resources by automatically tearing down when they are no longer needed, making them highly efficient for dynamic enterprise environments.
- A. Correct.
Correct. Dynamic tunnels are created automatically when traffic is detected between two sites, eliminating the need for manual configuration.
- B. Incorrect.
Incorrect. Dynamic tunnels do not adjust MTU size; MTU adjustments are handled separately through interface configurations or policies.
- C. Correct.
Correct. Dynamic tunnels use OMP to determine the best path by leveraging routing information, ensuring efficient and scalable communication.
- D. Incorrect.
Incorrect. Dynamic tunnels do not rely on pre-configured static routes. They dynamically establish connections based on routing information.
- E. Correct.
Correct. Dynamic tunnels automatically tear down when no traffic is detected for a specific timeout period, optimizing resource utilization.