3-10ScenarioAuthenticationmode User type CommandCommandlevelThe user privilege level levelcommand is executed, and theservice-type command specifies theavailable command level.The user privilege level levelcommand is not executed, and theservice-type command does not specifythe available command level.Level 0The user privilege level levelcommand is not executed, and theservice-type command specifies theavailable command level.Determined bythe service-typecommandThe user privilege level levelcommand is executed, and theservice-type command does not specifythe available command level.Level 0VTY users thatare authenticatedin the passwordmode of SSHThe user privilege level levelcommand is executed, and theservice-type command specifies theavailable command level.Determined bythe service-typecommandRefer to AAA Operation and SSH Operation of this manual for information about AAA, RADIUS, andSSH.Configuration ExampleNetwork requirementsAssume current user logins through the console port and the user level is set to the administrator level(level 3). Perform the following configurations for users logging in to VTY 0 using Telnet.z Configure the local user name as guest.z Set the authentication password of the local user to 123456 (in plain text).z Set the service type of VTY users to Telnet and the command level to 2.z Configure to authenticate users logging in to VTY 0 in scheme mode.z Only Telnet protocol is supported in VTY 0.z The screen can contain up to 30 lines.z The history command buffer can store up to 20 commands.z The timeout time of VTY 0 is 6 minutes.
