5-21any interface is OK) is set to 192.168.0.2. Both can use the ping command to check if the connection issuccessful.Step 2: Maintain the router through the terminal connected to the console port as follow:ftp 192.168.0.1Trying 192.168.0.1 ...Press CTRL+K to abortConnected to 192.168.0.1.220 3Com 3CDaemon FTP Server Version 2.0User(192.168.0.1:(none)): guest331 User name ok, need passwordPassword:230 User logged in[ftp]Use the command as follows to maintain the router.Here, get and put commands are used to backup and recover files.[ftp]get main.bin main.bincf:/main.bin has been existing. Overwrite it?[Y/N]:y200 PORT command successful.150 File status OK ; about to open data connection226 Closing data connection; File transfer successful.FTP: 14323376 byte(s) received in 69.256 second(s) 206.00K byte(s)/sec.[ftp]put main.bin main.bin200 PORT command successful.150 File status OK ; about to open data connection226 Closing data connection; File transfer successful.FTP: 14323376 byte(s) sent in 15.974 second(s) 896.00Kbyte(s)/sec.[ftp]quit221 Service closing control connectionMaintaining Application Program and Configuration FileYou can modify and display the file type under the file control submenu:Enter <4> under the main BootROM menu to enter the file control submenu. The system prompts:===============================================|Note:the operating device is CF Card || <1> Display All File || <2> Set Application File type || <3> Set Configuration File type || <4> Delete File || <5> Exit To Main Menu |=============================================================Enter your choice(1-5):Display all filesEnter <1>, and the system prompts: