5-18tftp 192.168.0.1 put config.cfg config.bakFile will be transferred in binary modeSending file to remote tftp server. Please wait... \TFTP: 1045 bytes sent in 0 second(s).File uploaded successfully.Use this command to download the config.cfg file on the server to the router:tftp 192.168.0.1 get config.cfg config.cfgThe file config.cfg exists. Overwrite it?[Y/N]:yVerifying server file...Deleting the old file, please wait...File will be transferred in binary modeDownloading file from remote tftp server, please wait...\TFTP: 1045 bytes received in 0 second(s)File downloaded successfully.If a config.cfg file already exists in the router, select to overwrite it.z If a config.cfg file already exists on the server, it will be overwritten.z The above operations are performed under user view.z The backup configuration file can be modified by text editor. The configuration file modified duringdownload process can modify the configuration, and the modification takes effect after rebooting.Similarly, you can also download application program to the router to overwrite the old mainprogram to upgrade the application program.Maintaining the Router with FTP ServerMaintaining the router when it serves as the serverFTP (File Transfer Protocol) is an application layer protocol in the TCP/IP suit. It mainly transfers filesamong remote hosts. Born over TCP, it provides reliable and connection-oriented data transfer servicebut does not provide access authorization and authentication mechanism.The FTP service provided by the router is FTP Server, that is to say, the router serves as the FTP Server.You can run FTP Client to log onto the router and access files on the router.Install FTP Client before using FTP. No FTP Server is available with the MSR 20 series. You must installone yourself. Take the FTP Client with Windows XP for example.Step 1: Build hardware maintenance environment as follows: