Netflow is an important tool and it has become an important factor especially when it comes to managing the network and vigilantly watching the bandwidth utilization. Solar Winds designed a free NetFlow confrigurator which is the easiest tool I have seen, the Solar winds NetFlow confrigurator is capable of configuring the NetFlow v5 via SNMP on supported Cisco® devices. The free NetFlow Confrigurator also facilitates setting up collectors for Cisco NetFlow data, specifying the ports on which the collectors are listening, and enabling monitoring of inbound and outbound (ingress/egress) traffic data per interface.
Here is a cool video from Solar Winds which demonstrates how to configure NetFlow in Cisco Devices.
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