300-415 Question 90
Select 3An enterprise has deployed Cisco SD-WAN across multiple branch offices and wants to ensure the solution is scalable and redundant. The network team is considering how to design the control plane and data plane components. Which of the following design considerations ensures both scalability and redundancy in the deployment?
- A
Deploy multiple vSmart controllers to distribute control plane tasks and ensure failover.
- B
Configure a single vBond orchestrator to simplify management and reduce resource overhead.
- C
Use redundant WAN edge routers at branch sites to avoid single points of failure.
- D
Deploy only one vManage instance for centralized management to avoid configuration conflicts.
- E
Enable BFD (Bidirectional Forwarding Detection) on all data plane tunnels for fast failure detection.
Show answer and explanation
Correct answers: A, C, E
Explanation
To achieve scalability and redundancy in a Cisco SD-WAN deployment, multiple vSmart controllers should be deployed to handle control plane tasks and ensure failover. Redundant WAN edge routers eliminate single points of failure at branch sites, and enabling BFD on data plane tunnels provides fast failure detection for improved resiliency. Avoid single points of failure by deploying multiple instances of critical components like vManage and vBond orchestrators.
- A. Correct.
Deploying multiple vSmart controllers ensures control plane scalability and redundancy by distributing tasks and providing failover in case of controller failure.
- B. Incorrect.
Using a single vBond orchestrator creates a single point of failure and does not support scalability or redundancy. It is recommended to deploy multiple vBond orchestrators for redundancy.
- C. Correct.
Using redundant WAN edge routers at branch sites ensures data plane redundancy, avoiding single points of failure and promoting high availability.
- D. Incorrect.
Deploying only one vManage instance does not provide redundancy. For scalability and redundancy, multiple vManage instances in cluster mode are recommended.
- E. Correct.
Enabling BFD on all data plane tunnels ensures fast failure detection, improving the resiliency and redundancy of the SD-WAN data plane.