Details
http://pubs.vmware.com/vsphere-51/topic/com.vmware.vsphere.networking.doc/GUID-E19FECAD-8629-4E8A-B61C-1F1C16770B3B.html
Solution
1. From the Web or vSphere Clients.
2. Configure the Netflow destinations to be correct.
3. Edit the VDS properties.
4. In the Netflow tab, set the Collector Settings > IP Address and Port.
Supportive Information
The following resource is also helpful.
This control applies to the following type of system VMware.