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I would like to get NetFlow information from individual layer 2 switch ports.

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The commands you need for layer2-switched traffic:

ip flow ingress layer2-switched vlan <vlanlist>
ip flow export layer2-switched vlan <vlanlist>


However, from the IOS guide: A PFC3B or PFC3BXL running 12.2(18)SXE or higher is required for this command, which enables NDE for all traffic within the specified VLANs rather than just inter-VLAN traffic.

If you are using a CatOS you may use the following command:

set mls bridged-flow-statistics enable <vlanlist>

Also read
document I have interface Vlan2 with record ip route-cache flow, but I have never seen traffic of this interface, although, other VLAN interfaces present in statistics.
document Can I use a bridged IP traffic NetFlow on PFC3A?

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