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When an administrative user selects the Settings-Boot configuration menu option, the following screen appears.An administrative user can use the Settings-Boot configuration screen to redefine the location from which the OnBoard appliance boots. By default, the OnBoard appliance boots from an image file that resides on the on-board Flash memory. Booting from the resident software is strongly recommended. Network boots should be reserved only for troubleshooting or upgrading.The Unit boot from pull-down menu lists the Network option for booting from a TFTP boot server on the network along with one or two boot images that reside on the OnBoard appliance.To understand the local options on the Unit boot from menu, you need to understand how the OnBoard appliance handles software upgrades:
• The first time a new software version is downloaded and installed from Cyclades, the new image is stored as Image2 in the Flash memory and the configuration is changed so the OnBoard appliance boots from image 2.
• The second time a new software version is downloaded and installed, the latest image is stored as Image 1, and the OnBoard appliance configuration is changed to boot from Image1.
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• Image1:image_filename
• Image2:image_filenameThe word image is followed by the number, followed by a colon (:), followed by the name of the file, including the version number. The menu item has the following format:After one or more software upgrades have been performed, a second image also appears in the menu, for example:If you want to boot from another image than the one currently selected, you can select that image from the Unit boot from menu.Network boots are recommended only for troubleshooting or for possible downloads of new software images that can then be stored in the resident removable Flash memory, as described in To upgrade to a boot image from a network boot in U-boot monitor mode:.
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OnBoard appliance IP address • InActive• ActiveIf the watchdog timer is active, the OnBoard appliance reboots if the software crashes. See To configure OnBoard appliance boot: for how the watchdog timer can be activated or deactivated.
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a. Accept or change the filename of the network boot program in the Network boot file name field. The file must be in the /tftpboot directory on the TFTP server specified in step b.
6. Click Save and apply changes.