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?
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
I would prefer to use BFD for this requirement but maybe Cisco assumes that this improvement need to be done without interaction of the service provider. In this case, adjusting the times to a lower value would cause more CPU load, because more keepalive packets are being sent and processed.
Best approach in real life would be answer D.