Detecting degradation in internet access quality

The DPI exports information about delays between the client and the DPI, and between the DPI and the host during TCP session establishment — RTT. The statistics record latency for each protocol, linked to the UserAgent (taken from ClickStream), which allows tracking the performance of a specific device.
Required steps to investigate:

1. Go to QoE Analytics → Subscribers → Netflow
2. Create a filter where:

• It is recommended to limit the search to http/https protocols to exclude the behavior of other protocols during TCP session setup.
• Specify average speed to select subscribers who actively use the internet.
• Specify the lower RTT threshold from the client side.

Interpreting the resulting statistics:

• The filter identified 25 potential clients who may have access quality issues.
• Detailed latency information for these clients can be viewed in the "Details" window.
• Using the megaphone icon, they can be added to a marketing campaign and notified or surveyed through the browser regarding service satisfaction.
• The report can be exported in a convenient format.