NetFlow working understand

[cloun81]

I tried to read info about NetFlow, but I didn't understand wich way NetFlow collect statistics.

Can anybody help me?

[raymong]

Netflow collects data about traffic flow as the traffic enters the router or switch (inbound). Here is a good starting point for understanding netflow:

http://www.cisco.com/warp/public/732/Tech/nmp/netflow/

[Balaji K]

netflow collects or populates entries in the netflow table depending on the flow mask that is configured