TTY

User Management

You can configure, monitor, and maintain local or remote network devices only after configuring user interfaces, user management, and terminal services. User interfaces provide login venues, user management ensures login security, and terminal services provide login protocols. router supports user login over console ports.

User Interface

A user interface is presented in the form of a user interface view for you to log in to a router. You can use user interfaces to set parameters on all physical and logical interfaces that work in asynchronous and interactive modes, and manage, authenticate, and authorize login users. Routers allow users to access user interfaces through console ports.

A console port is provided by the main control board of a router. The main control board provides one console port that conforms to the EIA/TIA-232 standard. The console port is a data connection equipment (DCE) interface. The serial port of a user terminal can be directly connected to a router's console port to implement local configurations.

User Login

If a device is started for the first time and you log in to the device through a console port, the system prompts you to set a password. When you re-log in to the device through a console port, you must enter the correct password to log in.

When a router is powered on for the first time, you must log in to the router through the console port, which is a prerequisite for other login modes as well. For example, you can use Telnet to log in to a router only after you use the console port to log in to the router and configure an IP address.