User Interface Assignment; User Interface Identification - HP 830 Series Configuration Manual

interfaces. After users are logged in, their actions must be compliant with the settings on the user
interfaces assigned to them.
Users are assigned different user interfaces, depending on their login methods, as shown in
Table 11 CLI login method and user interface matrix
User interface
Console user interface
AUX user interface
Virtual type terminal (VTY) user
interface
NOTE:
Support for AUX user interfaces depends on the device model. For more information, see
830 Series PoE+ Unified Wired-WLAN Switch and HP 10500/7500 20G Unified Wired-WLAN Module
Configuration Guides.

User interface assignment

The device automatically assigns user interfaces to CLI login users, depending on their login methods.
Each user interface can be assigned to only one user at a time. If no user interface is available, a CLI
login attempt will be rejected. The maximum number of user interfaces varies by device.
For a CLI login, the device always picks the lowest numbered user interface from the idle user interfaces
available for the type of login. For example, four VTY user interfaces (0 to 3) are configured, of which
VTY 0 and VTY 3 are idle. When a user Telnets to the device, the device assigns VTY 0 to the user and
uses the settings on VTY 0 to authenticate and manage the user.

User interface identification

A user interface can be identified by an absolute number, or the interface type and a relative number.
An absolute number uniquely identifies a user interface among all user interfaces. The user interfaces are
numbered starting from 0 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.
A relative number uniquely identifies a user interface among all user interfaces that are the same type.
The number format is user interface type + number. All types of user interfaces are numbered starting
from 0 and incrementing by 1. For example, the first VTY user interface is VTY 0.
Login method
Console port (EIA/TIA-232 DCE)
AUX port (EIA/TIA-232 DTE)
Telnet or SSH
22
Table 1 1.
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