How to archive configuration versions on commit and the related commands.

The system automatically archives the configuration whenever you commit a configuration change. The new, committed configuration version is saved to the config.boot file in the /config directory. The old config.boot file is saved to the /config/archive directory under the name config.boot.timestamp, where timestamp is the time the file was saved in the form of YYYY-MM-DD-hhmmss.

By default, the system maintains 20 versions of configuration in the archive. You can change the number of versions maintained in the archive by using the system config-management commit-revisions command.

You can also direct the system to save configuration versions to a remote location whenever configuration is committed by using the system config-management commit-archive command. FTP, SCP, and TFTP destinations are supported.