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Hierarchy Level


Enable application tracking (AppTrack).

After application identification identifies the application, AppTrack collects statistics for the application usage on the device, and when the session closes, AppTrack generates a message that provides the byte and packet counts and duration of the session, and sends details to the host device such as Security Threat Response Manager (STRM). STRM retrieves the data and provides flow-based application visibility details.



Generate application tracking initial message when a session is created. This option overrides the first-update-interval option if both are specified.

Starting in Junos OS 21.1R1, the first-update statement is deprecated— rather than immediately removed—to provide backward compatibility.


Interval when the first update message is sent (minutes).


The first-update-interval setting is disregarded if the first-update option is set to log the first message at session start.

  • minutes

    Maximum number of minutes after session start for the first update message to be sent. This value must be smaller than the session-update-interval setting.

    • Default: 1


Disable application tracking.


Frequency in which application tracking update messages are generated (minutes).

log-session-create Use this configuration statement to enable application tracking session.
log-session-close Use this configuration statement to re-enable AppTrack session after closing the session.
session-update interval session-update-interval

Configure the interval between session update messages for long-lived sessions being monitored by AppTrack. Byte count, packet count, and start and end times are updated and logged when the amount of time between session start or the previous update and the current time exceeds the interval.

no-volume-updates Use this configuration statement to disable AppTrack volume update.

Required Privilege Level

security—To view this statement in the configuration.

security-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 10.2. Support for disable added in Junos OS Release 11.4.

Configuration statement log-session-create, log-session-close, session-update-interval session-update-interval, and no-volume-updates are added in Junos OS Release 21.1R1.