CCDE: Cisco Certified Design Expert (Practical) — Question 126

An enterprise plans to evolve from a traditional WAN network to a software-defined WAN network. The existing devices have limited capability when it comes to virtualization. As the migration is carried out, enterprise applications and services must not experience any traffic impact. Which implementation plan can be used to accommodate this during the migration phase?

Answer options

• A. Deploy controllers, deploy SD-WAN edge routers. In the data center, and migrate branch sites.
• B. Migrate data center WAN routers, migrate branch sites, and deploy SD-WAN edge routers.
• C. Migrate branch sites, migrate data center WAN routers, and deploy controllers.
• D. Deploy SD-WAN edge routers in the data center, deploy controllers, and migrate branch sites

Correct answer: A

Explanation

Option A is correct because it involves deploying controllers and SD-WAN edge routers first, which enables the network to manage traffic effectively before migrating branch sites, minimizing service impact. The other options are incorrect as they either migrate branches before establishing the necessary SD-WAN infrastructure or do not prioritize the deployment of controllers, which is essential for managing the transition smoothly.