3Com Switch 7750 Configuration Guide Guide

Telnet Configuration with Authentication Mode Being None 55
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
# Specify commands of level 2 are available to users logging into VTY 0.
[SW7750-ui-vty0] user privilege level 2
# Configure Telnet protocol is supported.
[SW7750-ui-vty0] protocol inbound telnet
# Set the maximum number of lines the screen can contain to 30.
[SW7750-ui-vty0] screen-length 30
User PC running Telnet
Ethernet1/0/1
Ethernet
User PC running Telnet
Ethernet1/0/1
Ethernet