HP VPN Firewall Appliances System Management and Maintenance Configuration Guide

57
Saving running configuration by using different methods
When saving the running configuration to a configuration file, you can specify the file as the next-startup
configuration file.
If you are specifying the file as the next-startup configuration file, use one of the following methods to
save the configuration:
• Fast mode—Use the save command without the safely keyword. In this mode, the device directly
overwrites the target next-startup configuration file. If a reboot or power failure occurs during this
process, the next-startup configuration file is lost. You must specify a new startup configuration file
after the device reboots (see "Specifying the next-startup configuration file")
.
• Safe mode—Use the
save command with the safely keyword. Safe mode is slower than fast mode,
but more secure. In safe mode, the system saves configuration in a temporary file and starts
overwriting the target next-startup configuration file after the save operation is complete. If a reboot
or power failure occurs during the save operation, the next-startup configuration file is still retained.
Use the safe mode if the power source is not reliable or you are remotely configuring the device.
The configuration file extension must be .cfg.
To save the running configuration, perform either of the following tasks in any view:
Task Command Remarks
Save the running configuration to a
configuration file without
specifying the file as the
next-startup configuration file.
save file-url N/A
Save the running configuration to a
configuration file and specify the
file as the next-startup
configuration file.
save [ safely ] [ force ]
If the force keyword is specified,
the command saves the
configuration to the next-startup
configuration file that has been
specified.
If the force keyword is not
specified, you can choose to
re-specify a next-startup
configuration file as instructed by
the system.
Configuring configuration rollback
To replace the running configuration with the configuration in a configuration file without rebooting the
device, use the configuration rollback function. This function helps you revert to a previous configuration
state or adapt the running configuration to different network environments.
The configuration rollback function compares the running configuration against the specified
replacement configuration file and handles configuration differences as follows:
• If a command in the running configuration is not in the replacement file, the rollback function
executes the undo form of the command.
• If a command in the replacement file is not in the running configuration, the rollback function adds
the command to the running configuration.
• If a command has different settings in the running configuration and the configuration file, the
rollback function replaces the running command setting with the setting in the configuration file.