Designing Cisco Enterprise Networks (ENSLD) — Question 8

A company with multiple service providers wants to speed up BGP convergence time in the event a failure occurs with their primary link. Which approach achieves this goal and does not impact router CPU utilization?

Answer options

• A. Utilize BFD and tune the multiplier to 50
• B. Lower the BGP hello interval
• C. Decrease the BGP keepalive timer
• D. Utilize BFD and keep the default BGP timers

Correct answer: D

Explanation

Using BFD with default BGP timers allows for rapid failure detection without putting extra strain on the router's CPU. Options A, B, and C would either increase CPU utilization or not effectively enhance convergence time under failure conditions.