Enter the following command to restart the DFL-500 NPG: > execute reboot

As the DFL-500 NPG reboots, messages similar to the following appear:

BIOS Version 2.2

Serial number: FGT-502801021075 SDRAM Initialization.

Scanning PCI Bus...Done. Total RAM: 256M Enabling Cache...Done. Allocating PCI Resources...Done. Zeroing IRQ Settings...Done. Enabling Interrupts...Done. Configuring L2 Cache...Done.

Boot Up, Boot Device Capacity=62592k Bytes. Press Any Key To Download Boot Image.

...

Quickly press any key to interrupt system startup. The following message appears:

Enter TFTP Server Address [192.168.1.168]:

You only have 3 seconds to press any key. If you do not press any key soon enough, the DFL-500 reboots and you must log in and repeat the execute reboot command.

Type the address of the TFTP server and press Enter. The following message appears:

Enter Local Address [192.168.1.188]:

Type the address of the internal interface of the DFL-500 and press Enter. The following message appears:

Enter File Name [image.out]:

Enter the firmware image file name and press Enter.

The TFTP server uploads the firmware image file to the DFL-500 and messages similar to the following appear:

Total 7682959 Bytes Data Is Downloaded. Testing The Boot Image Now.

Total 32768k Bytes Are Unzipped.

Do You Want To Save The Image ?[Y/n]

Type Y .

Programming The Boot Device Now.

................................

Read Boot Image 548405 Bytes. Initializing Firewall ...

DFL-500 Login:

The installation might take a few minutes to complete.

You can then restore your previous configuration. Begin by changing the interface addresses if required. You can do this from the web-based manager or from the CLI using the command: set system interface

DFL-500 User Manual

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D-Link DFL-500 user manual Enter Tftp Server Address, Enter Local Address, Enter File Name image.out