3-1
3 Logging In Through Telnet
Introduction
The device supports Telnet. You can manage and maint ain the switchin g engine remotely by Telnetting
to the switching engine.
To log in to the switching engine through T elnet, the corresponding configuration is required on both the
switching engine and the Telnet terminal.
You can also log in to the switching engine through SSH. SSH is a secure shell added to Telnet. Refer to
the SSH Operation for related information.
Table 3-1 Requirements for Telnetting to the switching engine
Item Requirement
The IP address is configured for the VLAN of the switching engine,
and the route between the switching engine and the Telnet terminal is
reachable. (Refer to the IP Address and Performance Operation and
Routing Protocol parts for more.)
Switching engine
The authentication mode and other settings are configured. Refer to
Table 3-2 and Table 3-3.
Telnet is running.
Telnet terminal The IP address of the VLAN of the switching engine is available.
Common Configuration
Table 3-2 lists the common Telnet configuration.
Table 3-2 Common Telnet configuration
Configuration Description
Configure the command level
available to users logging in to
the VTY user interface
Optional
By default, commands of level 0 are available
to users logging in to a VTY user interface.
Configure the protocols the user
interface supports
Optional
By default, Telnet and SSH protocol are
supported.
VTY user
interface
configuration
Set the commands to be
executed automatically after a
user log in to the user interface
successfully
Optional
By default, no command is executed
automatically after a user logs into the VTY
user interface.