H3C SR6608/6604 Routers Installation Manual
Chapter 7 Maintaining Software
7-3
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If the main configuration file is damaged or lost, the backup configuration file is
used for loading the configuration information. This double protection mechanism
enhances the reliability of the file system.
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When saving the current configuration, you can specify to save it to the main
configuration file, the backup configuration file, or a configuration file with the
attribute denoted by N/A, namely a configuration file without a specific attribute
assigned to it.
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When deleting a configuration file, you can specify to delete the main or backup
configuration file. For a configuration file with both M and B attributes, you can
specify its M or B attribute to remove.
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You can define a configuration file as the one to be used at the next boot by
changing its attribute to M.
The secure configuration file is used when the system fails to boot using the main, and
then the backup configuration file. Currently the system does not support boot with the
secure configuration file.
2) A system that does not support the main and backup attributes of configuration
files defines only one type of configuration file, with the attribute denoted by N/A,
namely a type of configuration file without a specific attribute assigned to it.
The configuration files have a file name extension of .cfg. By default, they are stored in
the built-in CF card.
Note that you can make the system support the main and backup attributes of
configuration files according to the actual situation. After doing this, you cannot restore
the mode of a single type of configuration file.
The system will select the configuration files in order to load configuration information at
startup:
1) If a system supports the main and backup attributes of configuration files, the
system:
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Uses the main configuration file to initialize the configuration if the main file exists.
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Uses the backup configuration file to initialize the configuration if the main file does
not exist.
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Boots using the null configuration (default settings) if the backup file does not exist
either.
2)
If a system does not support the main and backup attributes of configuration files,
the system:
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Uses the default configuration file (if any) to initialize the configuration. The default
configuration file is
startup.cfg
. Note that you can use the
startup
saved-configuration
cfgfile
command to define the configuration file to be used
at the next system boot.
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Uses the null configuration if the default configuration file does not exist.
For more information about configuration files, refer to section 7.6.3 “Setting
