Implementing Cisco SD-WAN Solutions (ENSDWI) — Question 84

Which protocol is used to measure loss, latency, jitter, and liveliness of the tunnel between WAN Edge router peers?

Answer options

• A. OMP
• B. NetFlow
• C. BFD
• D. IP SLA

Correct answer: C

Explanation

BFD (Bidirectional Forwarding Detection) is specifically designed to quickly detect failures in the path between two routers, measuring metrics such as loss, latency, and jitter. OMP, NetFlow, and IP SLA serve different functions; OMP is for routing, NetFlow is for traffic analysis, and IP SLA is more focused on monitoring performance metrics but not as quickly as BFD.