3-1
3 Logging In Through Telnet
Go to these sections for information you are interested in:
z Introduction
z Telnet Configuration with Authentication Mode Being None
z Telnet Configuration with Authentication Mode Being Password
Introduction
Switch 4210 supports Telnet. You can manage and maintain a switch remotely by Telnetting to the
switch.
To log in to a switch through Telnet, the corresponding configuration is required on both the switch and
the Telnet terminal.
You can also log in to a switch 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 a switch
Item Requirement
The IP address is configured for the VLAN of the switch, and the route between
the switch and the Telnet terminal is reachable. (Refer to the IP Address
Configuration – IP Performance Configuration and Routing Protocol parts for
more.)
Switch
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 interface of the switch is available.
Telnetting to a switch using IPv6 protocols is similar to Telnetting to a switch using IPv4 protocols. Refer
to the IPv6 Management part for related information.
Common Configuration to Control Telnet Access
Table 3-2 Common Telnet configuration
Configuration Description
VTY user
interface
configuration
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.
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