Troubleshooting Empty Charts

A chart may appear empty or blank even when network traffic is present. This typically indicates that real-time data collection is not configured for interface protocols.

To resolve blank or empty charts

1. Navigate to Device > App Flow > Flow Reporting.

   You can also click the Flow Reporting link displayed at the top of the Protocol Monitor page when data collection is disabled.

2. In the Settings tab, verify that the Enable Real-Time Data Collection toggle is selected.
3. From the Collect Real-Time Data For drop-down, ensure Interface protocols is selected.
4. Click Accept.
5. Return to Monitor > Real-Time Charts > Protocol Monitor.

   Charts must begin populating within the configured refresh interval.

The Protocol Monitor page itself does not contain configuration settings. All data collection settings are managed from Device > App Flow > Flow Reporting. The Protocol Monitor is a display-only page that renders data collected by the AppFlow engine.