Huawei AR2200 Series Configuration Manual page 43

Huawei AR2200 Series Enterprise Routers
Configuration Guide - Basic Configuration
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
l
l
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.
Issue 02 (2011-10-15)
Table 4-1 Example for the absolute numbering
Absolute number
0
1
2
3
4
5
129
130
131
132
133
NOTE
The absolute numbers allocated for TTY and VTY interfaces are device-specific.
Non-authentication: In this mode, users can log in to the router without entering usernames
or passwords. For security, this mode is not recommended.
Password authentication: In this mode, users need to enter passwords, not usernames,
during the login process.
AAA authentication: In this mode, users need to enter passwords and usernames during the
login process. Telnet users are usually authenticated in this mode.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Configuring User Interface
User-interface
CON0
First TTY user interface (TTY0)
Second TTY user interface (TTY1)
Third TTY user interface (TTY2)
Fourth TTY user interface (TTY3)
Fifth TTY user interface (TTY4)
First virtual interface (VTY0)
Second virtual interface (VTY1)
Third virtual interface (VTY2)
Fourth virtual interface (VTY3)
Fifth virtual interface (VTY4)
32