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Application Files
The WX3000 series supports the Dual Image function. By default, the system defines three application
files for system boot:
Main application file (referred to as main file)
Backup application file (referred to as backup file)
Secure application file (referred to as secure file)
These three application files are stored in the flash memory, with the file name extension of .bin.
Typically, the default application files are written into the built-in flash memory before device delivery.
If you have uploaded all the three types of application files in the flash memory, the system uses these
three files to boot the device in the sequence of main.bin, backup.bin, and secure.bin. For how to set the
type of an application file, refer to section Maintaining the Application and Configuration Files on page
5-22.
The following gives the default names and types of the application files and their priorities for booting:
Main application file. The default name is main.bin and the file type is M. it is the default application
file for system boot.
Backup application file. The default name is backup.bin and the file type is B. If the system fails to
boot using the main application file, it tries the backup application file.
Secure application file. The default name is secure.bin and the file type is S. If the system fails to
boot using the backup application file, it tries the secure application files. If the system fails to boot
using the secure file, it gives a startup failure message.
Note that:
Only the application files of the M, B, and S types can be used to boot the system, while an
application file of the N type (an application file other than the M, B, or S type) cannot.
You can rename the application files in the flash memory through the command line interface (CLI)
after the application program is loaded. You can modify the file type of the M, B, and N types
application files through the BootWare menu or the CLI after application startup, while you cannot
modify the file type of the S-type application file.
The secure application file is the last resort for system boot; therefore, you cannot change the file
type of the secure application file or turn another type of file into a secure file by modifying the file
type. The secure file can only be downloaded from the BootWare menu.
Only one file of the same type (M, B, or S) can exist in the flash memory at a time. For example, if
an application file of type M+B exists in the CF card, another file of type M or B cannot exist. If the
type of another file is changed to B, the existing type M+B file changes to a file of type M.
Configuration Files
With the file name extension of .cfg, configuration files are used to store the configuration information of
the device. Typically, no configuration file with the name extension .cfg is provided when the device is
delivered (a configuration file with name extension .def is provided by the switching engine). In this case,
the device loads the default configuration at startup. If the configuration file is deleted or missing, the
device also loads the default configuration at reboot.
The access control engine has only one configuration file with no backup.
The switching engine has main and backup configuration files, which are managed like the
application files on the access control engine.
5-2
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