Configuration changes made in any of the CLI modes are only temporarily changed in RAM memory. Changes are not saved into the configuration files unless you run the config, runconfig or config savetoflash configuration commands, which are described in the following table.
Saves configuration changes in the appropriate configuration files. Saves any unsaved configuration changes in the configuration files and creates a zipped backup copy of the files in a backup directory for possible later retrieval. Restores the backed up configuration files, overwriting any configuration changes made since the last time the savetoflash option was executed.See the sections describing the various modes for examples of how to save configuration changes.