Configure Netflow on Cisco 3750

Netflow is not supported on 3750 switches.  The only Cisco switches that support Netflow are the  4500 and 6500 series switches.  Netflowo is also supported by all routers

So even though I am seeing the commands and the 3750 is accepting the commands it is not supported?

Does it matter which verson of the IOS you are running or is this across the board?

This is across the board for all lower end switches.  Below is a list of Cisco devices that support Netflow

Table 1. NetFlow Recent Cisco Device Support Matrix

Did you ever get netflow to work with the 7500?

Hi brobst007,

I believe there shouldn't be any problems, it's in a supported devices list .

Configuration guidelines can be found here: http://www.cisco.com/en/US/docs/ios/12_1/switch/configuration/guide/xcdnfc.html

thanks

If you absolutely need NetFlow in an environment with low-end Cisco switches, you can create a SPAN session or tap, then use nProbe to inspect the raw packets and export NetFlow based on that:

www.ntop.org/nProbe.html

I haven't deployed nProbe in production, but I've tested this feature in a lab and it seemed to work as specified.

the thwack doc has the 3750 as a "no"