SonicWall NSA E5500 with Firmware Version SonicOS Enhanced 18.104.22.168-36o supports flow format like (NetFlow v5, v9 and IPFIX). The flow export in Sonicwall is currently a beta version but then again is still a good start rather than having nothing at all. All the flow export version mentioned for SonicWall are supported by NetFlow Analyzer.
SonicWall Devices can be configured for NetFlow export through GUI. Login to Sonic Wall Device Console and click on Log – Flow Reporting to configure flow export. Enter the specific parameters and save them to start your flow export.