39
To do…
Use the command…
Remarks
Enable telnet
telnet server enable
Required
By default, the telnet service is
disenabled.
Enter one or multiple VTY user
interface views
user-interface vty
first
-
number
[
last-number
]
—
Specify the none authentication
mode
authentication-mode none
Required
By default, authentication mode for
VTY user interfaces is
password
.
Configure the command level for
login users on the current user
interfaces
user privilege level
level
Required
By default, the default command
level is 0 for VTY user interfaces.
Configure common settings for
VTY user interfaces
—
Optional
See "
for VTY user interfaces (optional)
When you log in to the device through telnet again:
•
You enter the VTY user interface, as shown in
•
If "All user interfaces are used, please try later!" is displayed, it means the current login users
exceed the maximum number. Please try later.
Figure 9
Configuration page
Configuring password authentication for telnet login
Configuration prerequisites
You have logged in to the device.
By default, you can log in to the device through the console port without authentication and have user
privilege level 3 after login. For information about logging in to the device with the default configuration,
see "
."
Configuration procedure
Follow these steps to configure password authentication for telnet login: