Operation Manual – LoginH3C S3100 Series Ethernet Switches Chapter 3 Logging in through Telnet3-6# Configure not to authenticate Telnet users logging into VTY 0.[Sysname-ui-vty0] authentication-mode none# Specify commands of level 2 are available to users logging into VTY 0.[Sysname-ui-vty0] user privilege level 2# Configure Telnet protocol is supported.[Sysname-ui-vty0] protocol inbound telnet# Set the maximum number of lines the screen can contain to 30.[Sysname-ui-vty0] screen-length 30# Set the maximum number of commands the history command buffer can store to 20.[Sysname-ui-vty0] history-command max-size 20# Set the timeout time to 6 minutes.[Sysname-ui-vty0] idle-timeout 63.3 Telnet Configuration with Authentication Mode BeingPassword3.3.1 Configuration ProcedureTable 3-5 Telnet configuration with the authentication mode being passwordOperation Command DescriptionEnter system view system-view —Enter one or more VTYuser interface viewsuser-interface vtyfirst-number[ last-number ]—Configure toauthenticate userslogging into VTY userinterfaces using thelocal passwordauthentication-modepassword RequiredSet the local passwordset authenticationpassword { cipher |simple } passwordRequiredConfigure thecommand levelavailable to userslogging into the userinterfaceuser privilege level levelOptionalBy default, commands oflevel 0 are available to userslogging into VTY userinterface.Configure the protocolto be supported by theuser interfaceprotocol inbound { all |ssh | telnet }OptionalBy default, both Telnetprotocol and SSH protocolare supported.