Operation Manual – LoginH3C S3610&S5510 Series Ethernet Switches Chapter 3 Logging in Through Telnet3-43.2 Telnet Configuration with Authentication Mode BeingNone3.2.1 Configuration ProcedureTo do… Use the command… RemarksEnter 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 afterlogging in.Configure the commandlevel available to userslogging into VTY userinterfaceuser privilege level levelOptionalBy default, commands oflevel 0 are available tousers logging into VTYuser interfaces.Configure the protocols tobe supported by the VTYuser interfaceprotocol inbound { all |ssh | telnet }OptionalBy default, both Telnetprotocol and SSHprotocol are supported.Set the command that isautomatically executedwhen a user logs into theuser interfaceauto-execute commandtextOptionalBy default, no commandis automatically executedwhen a user logs into auser interface.Define a shortcut key foraborting tasksescape-key { default |character }OptionalThe default shortcut keycombination for abortingtasks is < Ctrl+C >.Make terminal servicesavailable shellOptionalBy default, terminalservices are available inall user interfaces.Set the maximum numberof lines the screen cancontainscreen-lengthscreen-lengthOptionalBy default, the screen cancontain up to 24 lines.You can use thescreen-length 0command to disable thefunction to displayinformation in pages.