"The only people that ever say 'sFlow is better than NetFlow' are those that haven't used both and seen the difference for themselves.
"Most customers that I've talked to, and there have been hundreds over the years, want sFlow to 'just behave like NetFlow'. In fact many customers, when faced with the prospect of sampled data, will deploy NetFlow generators (sometimes called 'flow probes') such as nBox or Cisco's NGA to create NetFlow based on SPAN ports rather than deal with the difficulties sFlow presents.
"The NetFlow vs. sFlow war is over. Someone should let them know. Perhaps this will help."
"The Nexus 3000 series are the first Cisco switches based on merchant silicon, which includes hardware support for sFlow, offering scalable, wire-speed, monitoring of all traffic flowing throughout entire networks of Nexus 3000 series switches.
"Since the Nexus 3000 series switches are the first Cisco products with sFlow... Cisco network administrators who are likely to be unfamiliar with sFlow technology. As a Cisco network administrator, you are likely to have experience with using Cisco's Switched Port Analyzer (SPAN) technology to selectively monitor traffic in Cisco edge switches and with Cisco's Netflow technology for monitoring TCP/IP traffic in Cisco routers.
"sFlow differs significantly from NetFlow and understanding these differences is important if you want to get the most out of sFlow: