Save and Activate
The GUI retains configuration changes until you send them to your device or discard them from the GUI.
You must also Save, then Activate your changes before your device can apply your changes. The Save button on the Configuration page initiates configuration Save and Activate procedures to the system.
When you click Save, the GUI either saves the configuration to your device or prevents you from saving invalid data. The system highlights any fields containing invalid data, allowing you to find and correct the mistake. The system displays any configuration errors in a list at the bottom of the GUI. The following screen capture shows an example of the errors list.
The GUI also checks your configuration for errors every time you click the Save button, the system displays the following dialog if any errors occur.
Figure 3-1 Configuration Errors Screen

After the save is successful, the GUI displays a dialog asking you if you want to activate this configuration. Note that you can save without activating, for example, when you want to wait for a preferred maintenance window to apply the changes to avoid any service disruption.

The confirmation dialog defaults to “Cancel,” which leaves your changes saved to your system but not activated. Select "Cancel" if you want to activate your configuration at a later time. Select "Confirm" to activate the changes now. The GUI provides a final confirmation message indicating success when activation finishes.