VMware Cloud Foundation 5.x Administrator — Question 43

An administrator logged into NSX Manager to view host details. The administrator noticed that the "Tunnel" status for the ESXi hosts, in the VI workload domain, is showing down.
What is a possible reason the ESXi host tunnels are showing down in NSX?

Answer options

• A. The IGMP has been disabled on the network.
• B. The MTU setting for the host TEPs has been set to 1500.
• C. The host TEP IP addresses are being dynamically assigned through DHCP instead of being statically assigned.
• D. The overlay traffic is being blocked by the gateway firewall.

Correct answer: B

Explanation

The correct answer is B because the MTU setting for host TEPs should typically be higher than 1500 to allow for proper encapsulation of overlay traffic. The other options do not directly relate to the tunnel status; for instance, IGMP settings and DHCP assignments can affect multicast and IP management but are not primary reasons for tunnel connectivity issues.