Allied Telesis AT-S63 - Manual (Page 27)

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Chapter 3
Saving the Parameter Settings
The configuration settings of the switch are stored in a file called the active
configuration file. This file resides in the file system of the switch and
contains all of the commands needed to restore the current configuration.
The switch refers to this file to restore its settings whenever it is reset or
power cycled.
When you change a parameter setting of a feature, the new setting is
immediately implemented by the switch. However, the active configuration
file is not automatically updated. Rather, you must initiate the update
yourself. Instructing the switch to update its configuration file with your
parameter changes should be a standard part of your management
sessions. Otherwise, your changes will be discarded if you have to reset
the unit.
As explained in the following sections, the command for instructing the
switch to update its configuration file is different for each of the
management interfaces.