Using Automatic Configuration Backup After A Software Upgrade - HP MSR Series Configuration Manual

process, the next-startup configuration file is lost. You must re-specify a new startup configuration file
after the device reboots (see
Safe mode—Use the save command with the safely keyword. Safe mode is slower than fast mode,
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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 router.
The configuration file name extension must be .cfg.
To save the running configuration, perform either of the following tasks in any view:
Task
Save the running configuration to a
configuration file without
specifying the file as the
next-startup configuration file.
Save the running configuration to a
configuration file and specify the
file as the startup configuration file
for the next startup.
Using automatic configuration backup after a software
upgrade
After a software upgrade, the system by default starts up with the next-startup configuration file created
on the old software version, but the system does not load settings that are incompatible with the new
software version to the current configuration.
In case a future downgrade is needed, the system automatically checks for configuration incompatibility
and backs up the old next-startup configuration file the first time you use the save [ safely ] [ backup |
main ] [ force ] command to save the running configuration to the file.
The backup file is named in the _old-filename_bak.cfg format. For example, if the old configuration file
is named config.cfg, the backup file is named _config_bak.cfg.
If the backup attempt fails, choose one of the following failure handling actions at prompt:
Give up saving the configuration—The system does not save the running configuration on the
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device.
"Specifying a configuration file for the next
Command
save file-url
save [ safely ] [ backup | main ]
[ force ]
105
startup").
Remarks
N/A
If you execute the save [ safely ]
command without specifying any
other keyword, the command
saves the configuration to the main
startup configuration file.
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.