IPFIX export is configured in the fastdpi.conf file on the DPI.
Example of minimal recommended export settings:
netflow=8 netflow_dev=em1 netflow_timeout=10 netflow_full_collector_type=2 netflow_full_port_swap=0 netflow_full_collector=YOUR_QOESTOR_IP:1500 ipfix_dev=em1 ipfix_tcp_collectors=YOUR_QOESTOR_IP:1501
Additionally, you can configure export of NAT flows, DNS, GTP and RADIUS.
QoE must have receivers configured for all streams.
The netflow parameter is a bitmask and can have several different values. See more in Configuring service.