Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 9

What is a prerequisite for configuring BFD?

Answer options

• A. Jumbo frame support must be configured on the router that is using BFD.
• B. All routers in the path between two BFD endpoints must have BFD enabled.
• C. Cisco Express Forwarding must be enabled on all participating BFD endpoints.
• D. To use BFD with BGP, the timers 3 9 command must first be configured in the BGP routing process.

Correct answer: C

Explanation

The correct answer is C because Cisco Express Forwarding is essential for the efficient operation of BFD on the endpoints. Options A, B, and D are incorrect as they refer to requirements that are not necessary for configuring BFD itself.