Operation Manual – LoginH3C S3100 Series Ethernet Switches Chapter 3 Logging in through Telnet3-43.2 Telnet Configuration with Authentication Mode BeingNone3.2.1 Configuration ProcedureTable 3-4 Telnet configuration with the authentication mode being noneOperation Command DescriptionEnter system view system-view —Enter one or more VTYuser interface viewsuser-interface vtyfirst-number[ last-number ]—Configure not toauthenticate userslogging into VTY userinterfacesauthentication-modenoneRequiredBy default, VTY users areauthenticated after logging in.Configure thecommand levelavailable to userslogging into VTY userinterfaceuser privilege levellevelOptionalBy default, commands of level 0are available to users logginginto VTY user interfaces.Configure theprotocols to besupported by the VTYuser interfaceprotocol inbound { all| ssh | telnet }OptionalBy default, both Telnet protocoland SSH protocol aresupported.Set the commands tobe executedautomatically after auser login to the userinterface successfullyauto-executecommand textOptionalBy default, no command isexecuted automatically after auser logs into the VTY userinterface.Make terminal servicesavailable shellOptionalBy default, terminal servicesare available in all userinterfaces.Set the maximumnumber of lines thescreen can containscreen-lengthscreen-lengthOptionalBy default, the screen cancontain up to 24 lines.You can use the screen-length0 command to disable thefunction to display informationin pages.Set the historycommand buffer sizehistory-commandmax-size valueOptionalThe default history commandbuffer size is 10. That is, ahistory command buffer canstore up to 10 commands bydefault.