VMware NSX 4.x Professional (2024) — Question 19

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

Correct answer: D

Explanation

Bidirectional Forwarding Detection (BFD) is the correct choice as it provides rapid failure detection for ECMP routing, ensuring that traffic can be rerouted quickly in case of a failure. The other options, such as HSRP and VRRP, are more suited for redundancy and do not specifically address the requirements for ECMP routing. Beacon Probing (BP) is not relevant for this context.