3-4To do… Use the command… RemarksSet the history commandbuffer sizehistory-commandmax-size valueOptionalThe default history command buffersize is 10. That is, a history commandbuffer can store up to 10 commands bydefault.Set the timeout time of theVTY user interfaceidle-timeout minutes[ seconds ]OptionalThe default timeout time of a userinterface is 10 minutes.With the timeout time being 10 minutes,the connection to a user interface isterminated if no operation is performedin the user interface within 10 minutes.You can use the idle-timeout 0command to disable the timeoutfunction.Note that if you configure not to authenticate the users, the command level available to users logging into the switching engine depends on the user privilege level level commandConfiguration ExampleNetwork requirementsAs shown in Figure 3-1, assume current user logs in using the oap connect slot 0 command, and theuser level is set to the manage level (level 3). Perform the following configurations for users logging inthrough VTY 0 using Telnet.z Do not authenticate the users.z Commands of level 2 are available to the users.z Telnet protocol is supported.z The screen can contain up to 30 lines.z The history command buffer can contain up to 20 commands.z The timeout time of VTY 0 is 6 minutes.Figure 3-1 Network diagram for Telnet configuration (with the authentication mode being none)Configuration procedure# Enter system view. system-view# Enter VTY 0 user interface view.[device] user-interface vty 0# Configure not to authenticate Telnet users logging in through VTY 0.[device-ui-vty0] authentication-mode none
