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Exam 2V0-41.20 topic 1 question 21 discussion

Actual exam question from VMware's 2V0-41.20
Question #: 21
Topic #: 1
[All 2V0-41.20 Questions]

An NSX administrator is using ping to check connectivity between VM1 running on ESXi1 to VM2 running on ESXi2. The ping tests fails. 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?

  • A. esxcli network diag ping -H <destination IP address>
  • B. vmkping ++netstack=geneve -d -s 1572 <destination IP address>
  • C. vmkping ++netstack=vxlan-d -s 1572 <destination IP address>
  • D. esxcli network diag ping -I vmk0 -H <destination IP address>
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by gogo1 at Nov. 1, 2020, 10:54 p.m.

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gogo1
Highly Voted 3 years, 5 months ago
C indeed is correct
upvoted 9 times
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lgalford
Highly Voted 3 years, 4 months ago
https://kb.vmware.com/s/article/1003728
upvoted 7 times
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jsmith33
Most Recent 1 year ago
If you run esxcli network ip netstack list on one of the transport nodes, vxlan is one of the available tcp/ip stacks, not geneve. The correct syntax for C should be vmkping ++netstack=vxlan<space>-d -s 1572 <IP>. You can run this without -d and it will work as well.
upvoted 1 times
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Lazylinux
2 years, 1 month ago
Selected Answer: C
C works as tested it on transport node but B when tested instantly get error KILLED!!
upvoted 1 times
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gomtini
2 years, 5 months ago
Selected Answer: C
C looks closest
upvoted 2 times
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Aikendrum
2 years, 6 months ago
C looks closest Ping from a VXLAN TCP/IP Stack vmkping ++netstack=vxlan <host-IP> -s <packet-size>
upvoted 3 times
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atti9
2 years, 8 months ago
NSX-T uses GENEVE, but this is just referring to the default name given to the network stack on ESXi. It is still named vxlan in NSX-T.
upvoted 4 times
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Tachinsky
2 years, 8 months ago
NSX-T uses GENEVE for TEPs https://blogs.vmware.com/networkvirtualization/2017/09/nsx-t-routing-where-you-need-it.html/
upvoted 1 times
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PortgasDLuis13
2 years, 11 months ago
I agree, here a link with the NOTE talking about EVEN though the overlay encapsulation used in NSX-T is GENEVE, the esxi command is still the same using the stack vxlan.: https://shuttletitan.com/nsx-t/nsx-t-installation-series/nsx-t-installation-series-step-9-configure-host-transport-node/
upvoted 4 times
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cbg9
3 years ago
TEP's don't use VXLAN. Shouldn't it be Geneve?
upvoted 1 times
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dongyangwha
3 years ago
C is Correct. https://kb.vmware.com/s/article/2124360?lang=en_US&queryTerm=vmkping
upvoted 4 times
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suresh_40
3 years, 4 months ago
C is correct answer https://docs.pivotal.io/tkgi/1-8/nsxt-3-0-install.html
upvoted 2 times
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