3Com Switch 4800G 24-Port Configuration Manual page 986

986 C 79: F S
HAPTER ILE YSTEM
Saving the Current
Configuration
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M C
ANAGEMENT ONFIGURATION
When removing a configuration file from a device, you can specify to remove
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the main or backup configuration file. Or, if it is a file having both the main and
backup attributes, you can specify to erase the main or backup attribute of the
file.
When setting the configuration file for next startup, you can specify the
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main/backup attribute of the file.
Startup with the configuration file
The following steps are taken during system startup:
1 If the main configuration file exists, the device initializes with this configuration.
2 If the main configuration file does not exist but the backup configuration file
exists, the device initializes with the backup configuration.
3 If neither the main nor the backup configuration file exists, the device will:
4 Initialize with the default configuration file if it exists;
5 Or initialize with empty configuration if the default configuration file does not
exist.
You can modify the configuration on your device at the command line interface
(CLI). To use the modified configuration for your subsequent startups, you must
save it (using the save command) as a configuration file.
Modes in saving the configuration
Fast saving mode. This is the mode when you use the save command without
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the safely keyword. The mode saves the file quicker but is likely to lose the
original configuration file if the device reboots or the power fails during the
process.
Safe mode. This is the mode when you use the save command with the safely
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keyword. The mode saves the file slower but can retain the configuration file in
the device even if the device reboots or the power fails during the process.
CAUTION: Device reboot or the power failure during configuration file saving may
result in loss of the configuration file for next startup. In this case, the device
should be started with empty configuration and after the device starts, you need
to re-specify a configuration file for next startup. Refer to "Specifying a
Configuration File for Next Startup" on page 988 for details.
Attributes of the configuration file when main/backup attribute is
supported
Main attribute. When you use the save [ safely ] [ main ] command to save
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the current configuration, the configuration file you get has main attribute. If
this configuration file already exists and has backup attribute, the file will have
both main and backup attributes after execution of this command. If the
filename you entered is different from that existing in the system, this
command will erase its main attribute to allow only one main attribute
configuration file in the device.
Backup attribute. When you use the save [ safely ] backup command to save
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the current configuration, the configuration file you get has backup attribute. If
this configuration file already exists and has main attribute, the file will have
both main and backup attributes after execution of this command. If the