Monitoring network status in real time is an ideal tool for debugging DPI configuration during initial setup or after making changes.
In particular, a network operator can set protocol priorities as follows:
 
After applying the corresponding settings in the GUI or configuration file, you can open the online report “Traffic by application protocols.” The graphs in real time will show the changes: YouTube will take all available bandwidth, while torrent traffic will be limited.
Detailed configuration of online reports is described here; for this use case, select the report “Traffic speed” → “Traffic by application protocols.”
This functionality is available in the QoE Analytics module of the BASE license.