300-415 Question 115
Single answerAn organization is deploying Cisco SD-WAN with a data center acting as the central hub and several regional hubs connecting branch sites. During the design phase, the organization wants to ensure optimal traffic flow and redundancy between branch sites and the data center. Which design consideration is MOST appropriate to meet these requirements?
- A
Deploy dual data center hubs with active/active control plane redundancy.
- B
Configure regional hubs to forward all traffic to the data center without using direct internet breakout.
- C
Enable Application-Aware Routing policies on branch sites for optimized traffic steering.
- D
Use a single regional hub per region to reduce operational overhead and complexity.
Show answer and explanation
Correct answer: A
Explanation
Deploying dual data center hubs with active/active control plane redundancy ensures that branch sites and regional hubs can maintain traffic flow in the event of a failure at one data center. This design improves fault tolerance, load distribution, and overall system reliability, making it the most suitable approach for the organization's requirements.
- A. Correct.
Deploying dual data center hubs with active/active control plane redundancy ensures reliability, higher availability, and optimal traffic flow. This design provides redundancy and load balancing to avoid a single point of failure.
- B. Incorrect.
Forwarding all traffic from regional hubs to the data center without direct internet breakout can lead to suboptimal traffic flow and increased latency. Applications that can use local breakout may experience degraded performance.
- C. Incorrect.
While Application-Aware Routing is useful for optimizing traffic steering, it does not directly address the design requirement for redundancy and optimal traffic flow between branch sites and the data center.
- D. Incorrect.
Using a single regional hub per region might reduce complexity but introduces a single point of failure, which conflicts with the organization's requirement for redundancy.