Saturday, November 10, 2007

Impact of NetFlow on Routers

Thanks to the great IOShints blog for pointing me to NetFlow Performance Analysis. If you have any questions regarding the impact of generating NetFlow records on your routers, check out this Cisco white paper.


Matt Franz said...


Have you run across anything comparable for the various *BSD netflow mechanisms (pfflowd, netgraph, etc.) In particular how enabling netflow impacts forwarding, packet filtering performance?

Richard Bejtlich said...


Negative -- would make a good project.

Anonymous said...

Does anyone know of a similar document for sFlow ?

aldrin said...
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