3Com Switch 7750 Configuration Guide

Telnet Configuration with Authentication Mode Being None 53
Note that if you configure not to authenticate the users, the command level
available to users logging into a switch depends on both the
authentication-mode none command and the user privilege level level
command, as listed in Table 24.
Configure the command level
available to users logging into
VTY user interface
user privilege level level Optional
By default, commands of level
0 are available to users
logging into VTY user
interfaces.
Configure the protocols to be
supported by the VTY user
interface
protocol inbound { all | ssh |
telnet }
Optional
By default, both Telnet
protocol and SSH protocol are
supported.
Make terminal services
available
shell Optional
By default, terminal services
are available in all user
interfaces.
Set the maximum number of
lines the screen can contain
screen-length screen-length Optional
By default, the screen can
contain up to 24 lines.
You can use the
screen-length 0 command to
disable the function to display
information in pages.
Set the history command
buffer size
history-command max-size
value
Optional
The default history command
buffer size is 10. That is, a
history command buffer can
store up to 10 commands by
default.
Set the timeout time of the
VTY user interface
idle-timeout minutes
[ seconds ]
Optional
The default timeout time of a
user interface is 10 minutes.
With the timeout time being
10 minutes, the connection to
a user interface is terminated
if no operation is performed
in the user interface within 10
minutes.
You can use the idle-timeout
0 command to disable the
timeout function.
Table 23 Telnet configuration with the authentication mode being none
Operation Command Description