How to enable NetFlow
The monitoring policy enables or disables NetFlow monitoring on a distributed port or port group.
NetFlow settings are configured at the vSphere distributed switch level.
Edit the Monitoring Policy on a Distributed Port Group
With the Monitoring policy, you can enable or disable NetFlow monitoring on a distributed port group.
1 Log in to the vSphere Client and select the Networking inventory view.
2 Right-click the distributed port group in the inventory pane, and select Edit Settings.
3 Select Policies.
4 In the Monitoring group, select the NetFlow Status from the drop down menu.
5 Click OK