- NetFlow is a Cisco developed protocol
that's used to collect IP traffic information
for network monitoring.
By analyzing flow data,
typically with a device called a NetFlow collector,
we can organize our flow records
into a very intuitive format
that will give us a great look into our traffic,
bandwidth, and utilization patterns.
In this lesson we'll cover both NetFlow version five
and nine,
and we'll also look at troubleshooting Flexible NetFlow.