NetFlow Overhead

[jwbensley]

I would like to run some NetFlow monitoring on a few sub interfaces on a router. This is a 7301, with an NPE-G1.

What I want to know is, does Cisco have a page anywhere (because I can't find one) that lists typical additional CPU and memory loads one can expect when enabling NetFlow on an (sub)-interface; perhaps for a given speed (Mbps) and/or number of flows?

I don't want to enable NetFlow and then bring the device to a grinding halt, how can I know what sort of overhead to expect?

[yjdabear · Accepted solution]

Here's one that included the 7301, for example:

http://www.cisco.com/en/US/technologies/tk543/tk812/technologies_white_paper0900aecd802a0eb9.html

[jwbensley]

This is a good resrouce, thakns for the link