Web Manager “Settings” Menu Options > Configuring the Boot File Location > Network Boot Options

Network Boot Options
Network boots are recommended only for troubleshooting or for possible downloads of new software images that can then be stored in the on-board flash memory, as described in To Upgrade to a Boot Image From a Network Boot in U-Boot Monitor Mode.
To boot from a boot server, you can select “Network” and configure a boot server.
For network boot to work, make sure the following prerequisites are done.
An upgraded OnBoard boot image file must be downloaded from Cyclades and must be available on the boot server. See

Web Manager “Settings” Menu Options > Configuring the Boot File Location > Network Boot Options