DataFlowSet is a collection of Data Records (actual NetFlow data) and Options Data Records (meta data).

Field describes type and length of a single value in a Flow Data Record.

FlowSetHeader contains fields shared by all Flow Sets (DataFlowSet, TemplateFlowSet, OptionsTemplateFlowSet).

OptionsDataRecord is meta data sent alongide actual NetFlow data.

TemplateFlowSet is a collection of templates that describe structure of Data Records (actual NetFlow data).

TemplateRecord is a single template that describes structure of a Flow Record (actual Netflow data).