Netflow

Netflow brings sophisticated IP flow accounting and export functionality to high-end Cisco platforms. Netflow supports flow accounting of both unicast and multicast traffic flows. Although this chapter is mostly interested in the use of Netflow data for capacity planning and overall network management, Netflow also provides support for enterprise accounting, departmental charge-back, ISP billing, and network usage tracking for marketing purposes.

As described in Chapter 5, “Routers,” Netflow may be used in conjunction with Cisco Express Forwarding or other switching paths with relatively small performance overhead. After the flow is first identified, switching and accounting are performed in tandem.

Netflow searches for RST (Resets) ...

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