42
C
HAPTER
5: S
OFTWARE
M
AINTENANCE
By default, the system defines and attempts to boot in order with three
configuration files: main, backup, and default, provided they are available with CF
card. If the router fails to boot with the secure boot file, it prompts the boot
failure. For more information about the boot files, refer to “Maintaining
Application Program and Configuration File” on page 59.
The following table describes the three configuration files.
n
■
The configuration files for system boot can be type M, B and default
configuration file of type N, but not non-default configuration file of type N
(i.e. neither M nor B).
■
You can modify the file name of a configuration file in CF card using the
command after it boots. You cannot modify the type of the default
configuration file, but you can modify the file type of type M/B and N
configuration files in the BootROM menu or using commands after the
application program boots.
You can store them in Flash memory, but only one for each. For example, if an
M+B file exists, it is impossible to have another M or B file. If you change the file
type of another file to B, the M+B file becomes a type M file.
c
CAUTION:
■
The file name cannot be longer than 64 characters (including drive letter and a
string terminator. If the drive letter is “CF: /”, the file name can be at most
[64-1-4] = 59 characters in length; or, errors will occur in file operation.
Typically, the file name is recommended to be not more than 16 characters.
■
The extension ASCII characters (ASCII>=128) and invisible characters (ASCII<33)
cannot be included in the file name.
■
The following characters cannot be included in the file name: ", ‘, ?, , space, *,
|, <, /, :, >, ~.
Table 21
Description on the three configuration files
Configuration file
File type
Description
Main configuration file
M
Used by the system for
booting by default.
Backup configuration file
B
Used by the system for
booting when it fails to boot
with the main configuration
file.
Default configuration file
M/B/N
Used by the system for
booting when it fails to boot
with the backup configuration
file. If the system fails to boot
with the default configuration
file, it boots with null
configuration. The name of
the default configuration file
has something to do with the
router brand. The main and
backup configuration
operations on the default
configuration file is the same
with common configuration
files.
