Chapter 7. NetFlow

This chapter describes the NetFlow features in Cisco IOS. It enables you to distinguish the different NetFlow versions, recognize the latest NetFlow features, and understand the natural NetFlow evolution toward IPFIX. Platform-specific details are discussed, along with command-line references, examples, and SNMP MIB details.

Cisco IOS NetFlow technology is an integral part of Cisco IOS software that collects packets, classifies packets into flows, and measures flow statistics as the packets enter or exit the network element’s interface.

By analyzing NetFlow data, a network engineer can identify the cause of congestion, determine the Class of Service (CoS) for users and applications, identify the source and destination network, ...

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