Like most other settings, traffic logging can be enabled or disabled per device, per group, or generally.
To enable traffic logging, go to the Settings panel of a device or group, or choose Default settings in the page menu in the Devices tab (see Default settings).
In the General section, make sure that the option Traffic logging is Enabled, and click Save.
The devices collect the information regardless of this setting. The setting only controls whether the device is to send the information to the server. If enabled, the information is sent to the server at every system information synchronization, and is then deleted from the device. If disabled, the device automatically deletes the oldest traffic log entry as it adds the latest traffic log entry, after a device-specific, fixed upper limit to log content size has been reached. The process is automatic, and the device user cannot alter this setting.
Specific notes about client platforms: