1-4characters need to be input, the system automatically inputs a default character string, or inputs anempty character string when there is no default character string.z For the commands used to switch user interfaces, such as telnet, ftp, and ssh2, the commandsused to switch views, such as system-view, quit, and the commands used to modify status of auser that is executing commands, such as super, the operation interface, command view andstatus of the current user are not changed after the automatic execution function is performed.z If the system time is modified after the automatic execution function is configured, the scheduledautomatic execution configuration turns invalid automatically.z Only the last configuration takes effect if you execute the schedule job command repeatedly.Upgrading Device SoftwareDevice Software OverviewDevice software consists of the Boot ROM program and the system boot file. After the device ispowered on, the Boot ROM program initialize the hardware, and display the hardware information. Thenruns the boot file. The boot file provides hardware driver and adaptation for the system, and providesthe support for the different functions. The Boot ROM program and system boot file are required for thestartup and running of a device. Figure 1-1 illustrates their relationship.Figure 1-1 Relationship between the Boot ROM program and the system boot fileStartBoot ROM runsPress Ctrl+BRun boot fileEnter Boot ROMmenu to upgrade theBoot ROM programor boot FileYesNoSelect the Reboot optionto reboot the deviceEnter CLIFinishThe Boot ROM program and system boot file can both be upgraded through the Boot ROM menu orcommand lines. The following sections describe the upgrading through command lines. For instructionsabout how to upgrade them through the Boot ROM menu, refer to the installation menu of your device.Upgrading the Boot ROM Program Through Command LinesFollow these steps to upgrade the Boot ROM program:1) Copy the Boot ROM program to the root directory of the device's storage medium using FTP orTFTP.
