3Com Switch 7750 Configuration Guide

54 CHAPTER 4: LOGGING IN THROUGH TELNET
Configuration Example Network requirements
Perform the following configuration for Telnet users logging into VTY 0:
■ Do not authenticate users logging into VTY 0.
■ Commands of level 2 are available to users logging into VTY 0.
■ VTY 0 user interface supports Telnet protocol.
■ The screen can contain up to 30 lines.
■ The history command buffer can contain up to 20 commands.
■ The timeout time of VTY 0 is 6 minutes.
Network diagram
Figure 8 Network diagram for Telnet configuration (with the authentication mode being
none)
Configuration procedure
# Enter system view.
<SW7750> system-view
# Enter VTY 0 user interface view.
[SW7750] user-interface vty 0
# Configure not to authenticate Telnet users logging into VTY 0.
[SW7750-ui-vty0] authentication-mode none
Table 24 Determine the command level when users logging into switches are not
authenticated
Scenario
Command level
Authentication
mode User type Command
None
(authentication-
mode none)
VTY users The user privilege level level
command is not executed
Level 0
The user privilege level level
command is already executed
Determined by
the level
argument
User PC running Telnet
Ethernet
Ethernet2/0/1