Power cycle returns the switch to the same state that existed prior to the power cycle, and configuration is preserved.

The user can only save or restore configurations while in Managed mode. There is no management interface available in Secure or Unmanaged mode to enable the user to modify, save or restore configurations.

Since the device can only enter Secure mode via an option from the web interface, it can only transition into Secure mode from Managed mode. After the system is in Secure mode, it retains its last running configuration, but does not have a management IP address (cannot be managed from the web interface).

Transition to managed mode on PC2816/24/48 devices

A transition from Unmanaged or Secure mode to Managed mode via the use of the Managed Mode button results in the switch automatically rebooting and returning to Managed mode while running the saved configuration (if no configuration exists, then the default configuration is used).

Transition to managed mode on PC2808 devices

When returning to Managed mode from either Unmanaged or Secure mode, the Restore Saved Configuration page appears. This page can be used to retrieve a saved configuration. You can also change the device IP address using the following page:

Figure 4-3. Restore Saved Configuration

Local Configuration — No saved configuration is loaded.

Server IP Address/File Name — Loads a previously saved configuration.

Dell PowerConnect 28xx Systems User Guide

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Dell 28XX manual Restore Saved Configuration