R3204P16-HP Load Balancing Module System Management Configuration Guide-6PW101

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User interface overview
User interfaces, or lines allow you to manage and monitor sessions between the terminal and device
when you log in to the device through the console port or through Telnet.
One user interface corresponds to one user interface view where you can configure a set of parameters,
such as whether to authenticate users at login, whether to redirect the requests to another device, and the
user privilege level after login. When the user logs in through a user interface, the parameters set for the
user interface apply.
At present, the system supports the following CLI configuration methods:
• Local configuration via the console port
• Local/Remote configuration through Telnet
The methods correspond to the following user interfaces.
• Console user interface: Used to manage and monitor users that log in via the console port. The type
of the console port is EIA/TIA-232 DCE.
• AUX user interface: Used to manage and monitor users that log in via the AUX port. The type of the
AUX port is EIA/TIA-232 DTE. The port is usually used for modem dialup access.
• VTY (virtual type terminal) user interface: Used to manage and monitor users that log in via VTY. A
VTY port is a logical terminal line used for Telnet access.
Users and user interfaces
Only one user can use a user interface at a time. The configuration made in a user interface view applies
to any login user. For example, if user A uses the console port to log in, the configuration in the console
port user interface view applies to user A; if user A logs in through VTY 1, the configuration in VTY 1 user
interface view applies to user A.
A device can only be equipped with one console port and multiple Ethernet interfaces, so multiple user
interfaces of the same port type are supported. These user interfaces do not associate with specific users.
When a user initiates a connection request, the system automatically assigns an idle user interface with
the smallest number to the user based on the login method. During the login, the configuration in the user
interface view takes effect. The user interface varies depending on the login method and the login time.
Numbering user interfaces
User interfaces can be numbered by using absolute numbering or relative numbering.
Absolute numbering
Absolute numbering identifies a user interface or a group of different types of user interfaces. The
specified user interfaces are numbered from number 0 with a step of 1 and in the sequence of console,
AUX, and VTY user interfaces. You can use the display user-interface command without any parameters
to view supported user interfaces and their absolute numbers.
Relative numbering
Relative numbering allows you to specify a user interface or a group of user interfaces of a specific type.
The number format is “user interface type + number”. The following rules of relative numbering apply:
• Console port is numbered 0.
• AUX port is numbered 0.