We don't seem to be able to do this and worked with SW technical support which have put a feature request. Seems to be issue with template, not picking up IP's but mac addresses.
Any suggestions would be great.
Thanks
I don't think solarwinds supports L2 netflow with nexus yet. Assuming it doesn't work for 7k it also doesn't work for 6k.
Netflow for Nexus 7000 - SolarWinds Worldwide, LLC. Help and Support
Updated August 24, 2016
This is an overview of what the configuration would look like on a Nexus 7000.
All NTA versions
Netflow can only be enabled for VLAN because it will allow Layer 3. The interfaces will only do Layer 2 and NTA does not support Layer 2 at this time.
Example:
flow exporter FLOW_NAME destination <Solarwinds Sever IP> use-vrf management transport udp 2055 source mgmt0 version 9 template data timeout 90flow monitor FLOW_NAME record netflow-original exporter FLOW_NAME
See also Netflow 7000 for more information.