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Knowledgebase / NetFlow / Cisco Systems / How can I enable netflow on Cisco 3550 or Cisco 3750 devices?

How can I enable netflow on Cisco 3550 or Cisco 3750 devices?
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Cisco does not support NetFlow on the following devices:

  • Cisco 2900
  • Cisco 3500
  • Cisco 3750
  • Cisco 4500
  • Cisco 4948

It is possible to configure NetFlow export, but no flows are send to the collector. Only the first packet of the data flow was exported in the older IOS version.

As an alternative you can use Packet Analysis instead through a mirrored port (SPAN) or via Ethernet splitter (TAP).
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