Configuring Global Parameters
                                            Parameters that are not contained in a table are referred to as global parameters. 
                                            
                                                
                                                
                                                
                                                
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                                                    When entering a value for a parameter, the parameter's field is highlighted and a pop-up box appears, providing a short description of the parameter, for example, valid values.   | 
                                                
                                            
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    When you enter an invalid value, the field is displayed with a red border and a pop-up box describes the problem. In such cases, do one of the following: | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    Click the Cancel button (located at the bottom of the page) so that the parameter reverts to its previous value. | 
                                                
                                            
                                            
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    When you change a parameter's value from default and then click Apply, a dot is displayed next to the parameter's field or check box. In other words, if a dot isn't displayed, the parameter is at its default value. | 
                                                
                                            
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    When you change a value of a parameter that is displayed with a lightning-bolt     icon (see below), you need to save your settings to flash memory with a device restart for changes to take effect.   | 
                                                
                                            
                                            
                                                
                                            
                                            When you change such a parameter and then click Apply, the Restart button on the toolbar is displayed in a red border, indicating you that you need to restart the device, which you can o by clicking the button:
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    Common parameters are displayed in bold font. | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    Fields of parameters that configure passwords provide a toggle icon that shows (eye) or hides (eye crossed out) the password when you type it in the field: | 
                                                
                                            
                                            
                                                
                                            
                                            
                                                The Web interface always hides (by asterisks *or dots) passwords once they have been configured (i.e., you've clicked Apply). Therefore, the toggle eye icon doesn't show them even when clicked.
                                             
                                            
                                                
                                                
                                                
                                                
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                                                    Parameters that enable or disable a functionality provide a check box. When selected (i.e., marked), functionality is enabled; when cleared (empty), functionality is disabled. The following shows an example of an enabled functionality: | 
                                                
                                            
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    Parameters with numerical values provide a field with a spin box. Clicking the up arrow increases the number while clicking the down arrow decreases it. | 
                                                
                                            
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    To get help on a parameter, hover your mouse over the parameter's field or check box to display a pop-up box with a brief description of the parameter.  | 
                                                
                                            
                                            The following procedure describes how to configure stand-alone parameters.
                                            
                                                
                                                
                                                
                                                
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                                                    To configure a stand-alone parameter: | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    Modify the parameter's value as desired. | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    2.
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                                                    Click Apply; the changes are saved to the device's volatile memory (RAM). | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    3.
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                                                    Save the changes to the device's non-volatile memory (flash):  | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    If a device restart is not required:  | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    i.
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                                                    On the toolbar, click Save; a confirmation message box appears:  | 
                                                
                                            
                                            
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    ii.
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                                                    Click Yes to confirm.  | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    If a device restart is required: | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    i.
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                                                    On the toolbar, click Restart; the Maintenance Actions page opens. | 
                                                
                                            
                                            
                                                
                                                
                                                
                                                
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                                                    ii.
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                                                    Click Restart; the device saves the changes to flash and then restarts. | 
                                                
                                            
                                            For more information, see Restarting the Device.
                                            
                                                When you click Apply, changes are saved only to the device's volatile memory. If the device later undergoes a hardware reset, a software restart (without saving to flash), or powers down, the changes revert to their previous settings . Therefore, make sure that you save your configuration to the device's flash memory.