VMware NSX 4.x Professional (2024) — Question 46

An NSX administrator is using ping to check connectivity between VM1 running on ESXi1 to VM2 running on ESXi2. The ping tests fail. The administrator knows the maximum transmission unit size on the physical switch is 1600.
Which command does the administrator use to check the VMware kernel ports for tunnel end point communication?

Answer options

• A. vmkping ++netstack=geneve -d -s 1572 <destination IP address>
• B. vmkping ++netstack=vxlan -d -s 1572 <destination IP address>
• C. esxcli network diag ping –H <destination IP address>
• D. esxcli network diag ping -I vmk0 -H <destination IP address>

Correct answer: B

Explanation

The correct answer is B because using 'vmkping' with the vxlan netstack allows the administrator to specifically test VXLAN tunnel endpoints, which is essential for verifying overlay network communications. Options A and C do not utilize the correct netstack for VXLAN, while option D does not specify the netstack and is more general, making it unsuitable for this specific test.