3Com 2924-PWR User Guide - Page 184

14 MANAGING SYSTEM FILES The configuration file structure consists of the following configuration files: ■ Startup Configuration File - Contains the commands required to reconfigure the device to the same settings as when the device is powered down or rebooted. The Startup file is created by copying the configuration commands from the Running Configuration file or by downloading the configuration file from via TFTP or HTTP. ■ Running Configuration File - Contains all configuration file commands, as well as all commands entered during the current session. After the device is powered down or rebooted, all commands stored in the Running Configuration file are lost. During the startup process, all commands in the Startup file are copied to the Running Configuration File and applied to the device. During the session, all new commands entered are added to the commands existing in the Running Configuration file. Commands are not overwritten. To update the Startup file, before powering down the device, the Running Configuration file must be copied to the Startup Configuration file by clicking on the Save Configuration button. The next time the device is restarted, the commands are copied back into the Running Configuration file from the Startup Configuration file. ■ Image files - Software upgrades are used when a new version file is downloaded. The file is checked for the right format, and that it is complete. After a successful download, the new version is marked, and is used after the device is reset. Backup and restore of the configuration files are always done from and to the Startup Config file.