An Overview of NetFlow
NetFlow Operation
Whereas network protocols such as SNMP attempt to provide a very wide range of network management features and options, NetFlow is simple and specific in its mission: to as efficiently as possible provide statistics on IP packets flowing through network devices.
For instance, in Figure 19-6, host A connects to host B using some application (for instance, HTTP). NetFlow can monitor that application connection (counting packets, bytes, and so on) for that individual application flow. It can then push the statistics over to an external server called a NetFlow collector.
Figure 19-6 NetFlow in the Typical ...
Get Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
