CCDE: Cisco Certified Design Expert (Practical) — Question 249

An enterprise network has two core routers that connect to 200 distribution routers and uses full-mesh iBGP peering between these routers as its routing method.
The distribution routers are experiencing high CPU utilization due to the BGP process. Which design solution is the most cost effective?

Answer options

• A. Increase the memory on the core routers.
• B. Increase bandwidth between the core routers.
• C. Implement eBGP between the core and distribution routers.
• D. Increase the memory on the distribution routers.
• E. Implement route reflectors on the two core routers.

Correct answer: E

Explanation

Implementing route reflectors on the two core routers helps reduce the number of BGP sessions required, thus lowering CPU utilization on the distribution routers. The other options either do not address the root cause of the high CPU usage or involve additional costs without providing a more effective solution.