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NetFlow Data mismatch for Cisco ACI devices

Hello Everyone,

So, recently we added two Cisco ACI devices to our SolarWinds monitoring. Initially NetFlow was not enabled and monitoring was in place but now we have enabled netflow and observing data mismatch in traffic in/out.

In NTA summary page traffic in/out is showing as below:

But, interface details graphs i.e. NetFlow detailed graphs are showing traffic in Kbs or Mbs. So there is a huge mismatch in the data.

Was curious if anyone else faced something like this with Cisco Leaf Switches?

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leafswitch

Ciscoaci

netflow

leaf

nta

Accepted answers

rahulkudesia

Update: So, I ran Wireshark packet capture and compared it to what is showing in the SolarWinds NTA graphs. It is showing very less CFLOW packets that means it is just all the NetFlow traffic the device forwarded to SolarWinds NTA.

Which explains why there was a data mismatch. Now working with Cisco TAC on configuration part (Device end).

All comments

chad.every

Any chance you could post some screenshots of the interface details page where you mentioned it was showing Kbps/Mbps?

Out of a hunch, this seem most like a netflow sampling issue but we'd need more details to confirm.

documentation.solarwinds.com/.../nta-sampled-flow-supported-fields-sw151.htm

rahulkudesia

Hey Chad,

Sure, you can refer below screenshots from Interface details page under NTA.

rahulkudesia

Which explains why there was a data mismatch. Now working with Cisco TAC on configuration part (Device end).