H3C MSR 20/30/50 Series Routers User Manual
Chapter 5 Software Maintenance
Note:
z
The application programs for system boot can be type M, B and S, but not type N.
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.
z
You can modify the file name of an application file in CF card using the command
after it boots. You cannot modify the file type of a type S application image file, but
you can modify the file type of type M/B and N application program files in the
BootROM menu or using commands after the application program boots.
z
Secure boot file is the last resort for system boot. You can download it in the
BootROM menu and must name it secure.bin. However, you cannot modify this file
or change the type of another file to S. If you change the name of the secure boot file
with the
rename
command after the system boots, the file is removed from CF card.
To use the secure boot file after that, you need to download it again.
III. Configuration file
The file stores configuration information of the router.
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 section
5.7
“
Maintaining Application Program and
Configuration File
”.
The following table describes the three configuration files.
Table 5-2
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.
5-2
