40The specified file will be used as the main boot file at the next reboot on slot 0!Use the display boot-loader command to view the startup file information of the device:dis boot-loaderThe boot file used at this reboot: flash:/main.bin attribute: mainThe boot file used at the next reboot:flash:/msr.bin attribute: mainFailed to get the backup boot file used at the next reboot!Failed to get the secure boot file used at the next reboot!Make sure that the configured startup file is correct, and then use the reboot command to reboot thedevice:rebootStart to check configuration with next startup configuration file, pleasewait.........DONE!This command will reboot the device. Current configuration may be lost in nextstartup if you continue. Continue? [Y/N]:yAfter the device is rebooted, use the display boot-loader command to view the startup file information ofthe device to make sure that the current application of the device is msr.bin.CAUTION:• When you back up a file, the file will directly overwrite the one with the same name on the server.• The backup configuration file can be modified by a text editor. You can change the configuration bydownloading the modified configuration file and the modification takes effect after you reboot therouter. Similarly, you can also upgrade the main application file by downloading a new application fileto overwrite the original main application file.• The above operations are performed in user view.• Before upgrading an application, save the current configuration of the device.• When upgrading an application, use the dir command to view the size of the downloaded file andwhether the file is the same as that on the server to ensure that the application is complete and correct.Maintaining the Router Through FTP ServerMaintaining the router serving as the FTP serverFile Transfer Protocol (FTP) is an application-layer protocol in the TCP/IP protocol suite. It is mainly usedfor file transfer between remote hosts. Over TCP, FTP provides reliable and connection-oriented datatransfer service, but does not provide any access authorization and authentication mechanism.In the FTP service, the router can serve as the FTP server. You can run the FTP client to log in to the routeraccess files on the router.Before using FTP, you need to install the FTP client. No FTP client is shipped with the H3C MSR 20-1Xrouters. In the following example, the FTP client application program is the built-in Windows XP FTP client.Step1 Set up a hardware maintenance environment, as shown in the following figure: