NetFlow is a network analysis tool that you can use to monitor network monitoring and virtual machine traffic.
NetFlow is available on vSphere distributed switch version 5.0.0 and later.
1 Log in to the vSphere Client and select the Networking inventory view.
2 Right-click the vSphere distributed switch in the inventory pane, and select Edit Settings.
3 Navigate to the NetFlow tab.
The sampling rate determines what portion of data, NetFlow collects, with the sampling rate number
determining how often NetFlow collects the packets. A collector with a sampling rate of 2 collects data
from every other packet. A collector with a sampling rate of 5 collects data from every fifth packet.
9 Click OK.