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3Com Router 3000 Ethernet Family
Configuration Guide
Chapter 6 User Interface Configuration
6.1 User Interface Overview
6.1.1 Brief Introduction
User interface view is a new feature provided by the system to manage asynchronous
interfaces working in the flow mode. The emergence of this kind of view allows the user
to configure the login parameters of various users in a similar way, for these different
kinds of interfaces are usually used for system configuration management.
So far, the system supports:
Local configuration via the Console port
Local/Remote configuration via the AUX port
Local/Remote configuration via the serial port working in asynchronous mode
(TTY)
Local/Remote configuration through Telnet or SSH
There are four types of user interfaces commensurate with these configuration modes.
They are:
Console port (CON)
Console port is a kind of line device port. On a router, a Console port of EIA/TIA-232
DCE type is provided for users to make configuration.
AUX port (AUX)
AUX port is also a kind of line device port. On a router, an AUX port of EIA/TIA-232 DTE
type is provided for the dialup access via modem.
Asynchronous serial port (TTY)
TTY user interface is used if a user logs in to the router via an asynchronous serial port
or synchronous/asynchronous serial port (working in asynchronous mode)
Virtual line (VTY)
Virtual port is a logical terminal line that is used for Telnet access to the router and is
generally known as VTY.
6.1.2 Numbering User Interfaces
User interfaces can be numbered in two ways, that is, absolute numbering and relative
numbering.
Chapter 6 User Interface Configuration
3Com Corporation
6-1
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