NetFLow config for Cisco Nexus NXOS devices?

7 minutes ago, mnagel said:

The only NX-OS flow data we have functioning is via sflow not netflow, but both ought to work.  Unfortunately, the documentation is a bit limited -- improved since the old days, but there is only one example -- the very popular and modern Cisco 3745 router with original Netflow.  LM should have a maintained library of examples.

Regardless, the required field list is there (assuming the documentation is accurate).  If you can't define a suitable record, get a capture and open a support case with LM to find out what changes to the record are needed to make it work.

One more item to check -- you said you saw the flows arriving via capture, but that will show with or without a local firewall.  Please be sure you have opened access to the listener port if you have a local firewall active.