Huawei AR1200 Series User Manual

Table 4-1 Example for the absolute numbering
Absolute number User-interface
0 CON0
1 First TTY user interface (TTY1)
2 Second TTY user interface (TTY2)
3 Third TTY user interface (TTY3)
4 Fourth TTY user interface (TTY4)
5 Fifth TTY user interface (TTY5)
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 128are 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: Users can log in to the router without username or password. This
mode is a security risk and not recommended.
l Password authentication: Users must enter a password, but not a username, during the login
process.
l AAA authentication: Users must enter a password and a username during the login process.
Telnet users are usually authenticated in this mode.
Priority of a User Interface
Users logged in to the router are managed according to their levels.
Users are classified into 16 levels (numbered 0 to 15). The greater the number, the higher the
user level.
A user's level determines the level of commands that the user is authorized to run.
Huawei AR1200 Series Enterprise Routers
Configuration Guide - Basic Configuration 4 Configuring User Interfaces
Issue 04 (2012-05-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
44

Huawei AR1200 Series Specifications

General

Brand	Huawei
Model	AR1200 Series
Category	Network Router
Language	English