VMware NSX 4.x Professional (2023) — Question 74

An NSX administrator wants to create a Tier-0 Gateway to support equal cost multi-path (ECMP) routing.
Which failover detection protocol must be used to meet this requirement?

Answer options

• A. Beacon Probing (BP)
• B. Bidirectional Forwarding Detection (BFD)
• C. Virtual Router Redundancy Protocol (VRRP)
• D. Host Standby Router Protocol (HSRP)

Correct answer: B

Explanation

Bidirectional Forwarding Detection (BFD) is the correct choice because it provides rapid failure detection, which is essential for ECMP routing. The other options, while useful for redundancy, do not offer the fast detection capability that BFD provides, making them less suitable for this requirement.