An administrator has configured a vSphere Distributed Switch to send all network traffic to a collector virtual machine for analysis. However, after checking the collector virtual machine several hours later the administrator finds that no data has been collected. vSphere 5.x has been deployed in the datacenter.
Which two items below could be causing this issue? (Choose two.)
A.
The source virtual machine does not have Promiscuous Mode enabled.
B.
The source and target virtual machines are not both be on the same vSphere Distributed Switch.
C.
The port group or distributed does not have Promiscuous Mode enabled.
D.
The port group or distributed port does not have NetFlow enabled.
I think it’s B and C. You need to have Promiscuous Mode enabled for this to work
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B & D are correct.
Promiscuous mode allows other VM’s to see the traffic on the network. In this case, all network traffic is being sent directly to a collector VM. The collector VM therefore doesn’t require promiscuous mode to see it.
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I found this video helpful.
http://www.youtube.com/watch?v=gYQ39f7RW54
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A & C are definitely not true. D is definitely true. B is only true if the Netflow settings on the vDS are set to monitor internal flows only.
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