One of the great features that came out with ESX 3.5 is the NetFlow support. NetFlow is originally developed by Cisco and used mostly for IP accounting and network visibility. In this video we will use this protocol with the AdvenNet NetFlow Analyzer to have a better visibility for our ESX/VMs traffic. VMware still consider this as “experimental” but I’ve been running it in my production ESX farm for more than 3 month now and it’s running flawlessly with no overhead whatsoever on the ESX hosts. I’ve been using also NetFlow since 2004 in many ISPs and Carriers, and it has been always a big hit everytime I use it, mainly for the incredible visibility you get out of it and its ease of use.
VMware technical resource: http://www.vmware.com/resources/techresources/1014