Catalyst 6509 NetFlow support is essential, especially when the switch is set up as a core network device; this blog should help you get started with NetFlow traffic monitoring on 6500 series switches.
Enabling NetFlow on a 6509 is slightly different from the traditional IOS NetFlow setup. Here you need to keep in mind that NetFlow on the MSFC is collected in software, and on the PFC it is collected in hardware. Beside the familiar IOS NetFlow commands, Cisco 6509 NetFlow also requires enabling NDE in order to export flow statistics to the collector. Read more »
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