License

This section describes the functions of loading license files and displaying license status.

You need to activate licenses in either of the following situations:

Purchasing a license to obtain permissions on related functions after you purchase a new device.
Applying for a new license file, and upgrading and loading the license file when the license file is loaded on the device and a new feature is required.

NOTE:

This node is only available in the NAC unified mode.

Choose Maintenance > System Maintenance > License to access the License page.

Table 1 describes the parameters on the page.

**Table 1** Parameters on the License page
Item	Description
License status	not loaded: default status. By default, a license is not loaded after the system starts or when it is invalid. Normal: A commercial license enters the Normal state after it is loaded. Trial: A license enters the Trial state when the loaded ESN does not match the license or after the license expires. Demo: A temporary license enters the Demo state after it is loaded. Emergency: When a license enters the Emergency state, dynamic resources on the device are free from the license controls. That is, the device runs with the maximum configurations of dynamic resources. A license can remain in Emergency state for at most seven days. After seven days, the license enters the original state.
License revocation code	This item is displayed only when an invalid license file exists in the system.
Function Control Items	Displays the names of function control items.
Current Status	Displays the control item status.
Resource Control Items	Displays the names of resource control items.
Current Device Quantity/Specifications	Displays resource usage ratio.
Revoke	Revokes the current license file.
License file	Allows you to select the license file to be uploaded.