1.4 Avoiding Unit Network Management Connection Loss
Besides restoring locally unit configuration to factory default to avoid connection loss (see Restoring PDS-204GCO/AC Unit to Factory Default), which requires being in front of the unit, a permanent configuration change takes place only after you copy running-config to startup-config. Therefore, even if the configuration was invalid causing Network connection loss, powering unit off and then back to on causes unit to revert to the last saved valid configuration.
As powering the unit off and then back to on cannot be easily done on already installed outdoor units, a protection mechanism is added to protect user from losing unit connection while configuring unit from remote. When you start changing the unit configuration, the window, as shown in the preceding figure, appears after several seconds to report that the unit restarts itself automatically, reverting to the last saved configuration unless you save the modified configuration during the time left (default = 15 minutes). You can increase unsaved time up to 99 minutes at any given time. Saving modified configuration causes the window to disappear after several seconds. You can disable this feature.