H3C MSR 30-16, Руководство по установке

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56 C
HAPTER
5: S
OFTWARE
M
AINTENANCE
impossible to have a type M or type B file. If you change the file type of
another file to B, the M+B file becomes a type M file.
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 “Maintaining
Application Program and Configuration File” on page 74.
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
(that is, 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.
Table 25 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.