NetFlow is a network protocol developed by Cisco for collecting IP traffic information and monitoring network traffic. By analyzing flow data, a picture of network traffic flow and volume can be built. Using a NetFlow collector and analyzer, you can see where network traffic is coming from and going to and how much traffic is being generated.
What is a NetFlow Collector?
Routers that have the NetFlow feature enabled generate NetFlow records. These records are exported from the router and collected using a NetFlow collector. The NetFlow collector then processes the data to perform the traffic analysis and presentation in a user-friendly format. NetFlow collectors can take the form of hardware-based collectors (probes) or software-based collectors
Other manufacturer standard are:
Juniper® (Jflow)
3Com/HP® , Dell® , and Netgear® (s-flow)
Huawei® (NetStream)
Alcatel-Lucent® (Cflow)
Ericsson® (Rflow)
References:
https://www.solarwinds.com/netflow-traffic-analyzer/use-cases/what-is-netflow
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