3-5
Table 3-3 Telnet login configuration tasks when different authentication modes are adopted
Task Description
Telnet Login Configuration with Authentication
Mode Being None
Configure not to authenticate users logging in user
interfaces
Telnet Login Configuration with Authentication
Mode Being Password
Configure to authenticate users logging in to user
interfaces using a local password and configure the
local password
Telnet Login Configuration with Authentication
Mode Being Scheme
z Configure to authenticate users using the
scheme authentication mode;
z Set the authentication scheme, which can be
local authentication or remote server
authentication;
z Configure the authentication usernames and
passwords for local users.
Telnet Login Configuration with Authentication Mode Being None
Configuration Procedure
Follow these steps to perform Telnet configuration (with authentication mode being none):
To do… Use the command… Remarks
Enter system view
system-view
—
Enter one or more VTY user
interface views
user-interface vty first-number
[ last-number ]
—
Configure not to authenticate
users logging in to VTY user
interfaces
authentication-mode none
Required
By default, VTY users are
authenticated after logging in.
Note that if you configure not to authenticate the users, the command level available to users logging in
to a switch depends on both the authentication-mode none command and the user privilege level
level command.
Configuration Example
1) Network requirements
Assume that you are a level 3 AUX user and want to perform the following configuration for Telnet users
logging in to VTY 0:
z Do not authenticate users logging in to VTY 0.
z Commands of level 2 are available to users logging in to VTY 0.
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.
2) Network diagram
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