Real world sflow vs netflow?

Mikael Abrahamsson swmike at
Thu Sep 20 18:21:46 UTC 2012

On Thu, 20 Sep 2012, Peter Phaal wrote:

> I am a puzzled by the orthodoxy that seems to prevail around the value 
> "flows" as a measure of network traffic in packet switched networks.

What platforms actually do real unsampled netflow today, and do it well 
for multi-10gigabit worth of typical Internet traffic?

Most of the platforms I know of do sampled netflow at 1:100-1:1000 or so, 
and then I don't really see the fundamental difference in doing the flow 
analysis on the router itself (classic netflow) or doing the same but at 
the sFlow collector.

Mikael Abrahamsson    email: swmike at

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