Designing Cisco Enterprise Networks (ENSLD) — Question 98

An existing network solution is using BFD in echo mode. Several network devices are experiencing high CPU utilization, which an engineer has determined is related to the BFD feature. Which solution should the engineer leverage to reduce the CPU load?

Answer options

• A. Implement slow timers between peers with low CPU resources.
• B. Implement BFD asynchronous mode between peers with low CPU resources.
• C. Enable BFD multi-hop on the devices with low CPU resources.
• D. Utilize carrier delay on all routers in the network.

Correct answer: B

Explanation

The correct answer is B because BFD asynchronous mode is designed to reduce the frequency of control messages, thus lessening the CPU load on devices. Options A, C, and D may not effectively address the high CPU utilization as they either maintain or increase the control message overhead rather than reducing it.