Allied Telesis AT-S62 - Manual (Page 46)

Chapter 2: Starting a Local or Telnet Management Session
46 Section I: Basic Operations
Saving Your Parameter Changes
When you make a change to a switch parameter, the change is, in most
cases, immediately activated on the switch as soon as you enter it.
However, most parameter changes are initially saved only to temporary
memory in the switch and will be lost the next time you reset or power
cycle the unit. To permanently save your changes, you must select the S -
Save Configuration Changes option from the Main Menu. The switch
saves your changes to its active configuration file. You should select that
menu option whenever you have made a change to a switch parameter
that you want the switch to retain even when it is reset or power cycled. If
you do not see the option in the Main Menu, there are no parameter
changes to be saved.