Table 4-1
Example for the absolute numbering
Absolute number
User-interface
0
CON0
1
First TTY user interface (TTY0)
2
Second TTY user interface (TTY1)
3
Third TTY user interface (TTY2)
4
Fourth TTY user interface (TTY3)
5
Fifth TTY user interface (TTY4)
129
First virtual interface (VTY0)
130
Second virtual interface (VTY1)
131
Third virtual interface (VTY2)
132
Fourth virtual interface (VTY3)
133
Fifth virtual interface (VTY4)
NOTE
The absolute numbers allocated for TTY and VTY interfaces are device-specific.
The numbers from 1 to 32 are reserved for the TTY user interfaces.
Run the
display user-interface
command to view the absolute number of user interfaces.
Authentication of a User Interface
After a user is configured, the system authenticates the user during user login.
There are three user authentication modes: non-authentication, password authentication, and
AAA.
l
Non-authentication: In this mode, users can log in to the router without entering usernames
or passwords. For security, this mode is not recommended.
l
Password authentication: In this mode, users need to enter passwords, not usernames,
during the login process.
l
AAA authentication: In this mode, users need to enter passwords and usernames during the
login process. Telnet users are usually authenticated in this mode.
Priority of a User Interface
Users that log in to the router are managed according to their levels.
Similar to command levels, users are classified into 16 levels numbered 0 to 15. The greater the
number, the higher the user level.
The level of the command that a user can run is determined by the level of this user.
Huawei AR2200 Series Enterprise Routers
Configuration Guide - Basic Configuration
4 Configuring User Interface
Issue 02 (2011-10-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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