3Com Switch 4800G PWR 24-Port, Руководство по настройке

Страница: 40 / 730

5-3
To do… Use the command… Remarks
Configure the level of a command in a
specific view command-privilege level level view
view command
Required
z
You are recommended to use the default command level or modify the command level under the
guidance of professional staff; otherwise, the change of command level may bring inconvenience
to your maintenance and operation, or even potential security problem.
z
When you change the level of a command with multiple keywords or arguments, you should input
the keywords or arguments one by one in the order they appear in the command syntax. Otherwise,
your configuration will not take effect. The values of the arguments should be within the specified
ranges.
z
After you change the level of a command in a certain view to be lower than the default level, change
the level of the command used to enter the view accordingly.
Configuration example
The network administrator (a level 3 user) wants to change some TFTP commands (such as tftp get )
from level 3 to level 0, so that general Telnet users (level 0 users) are able to download files through
TFTP.
# Change the tftp get command in user view (shell) from level 3 to level 0. (Originally, only level 3 users
can change the level of a command.)
<Sysname> system-view
[Sysname] command-privilege level 0 view shell tftp
[Sysname] command-privilege level 0 view shell tftp 192.168.0.1
[Sysname] command-privilege level 0 view shell tftp 192.168.0.1 get
[Sysname] command-privilege level 0 view shell tftp 192.168.0.1 get bootrom.btm
After the above configuration, general Telnet users can use the tftp get command to download file
bootrom.btm and other files from TFTP server 192.168.0.1 and other TFTP servers.
Switching User Level
Overview
Users can switch their user privilege level temporarily without logging out and disconnecting the current
connection; after the switch, users can continue to configure the device without the need of relogin and
reauthentication, but the commands that they can execute have changed.
For example, if the current user privilege level is 3, the user can configure system parameters; after
switching the user privilege level to 0, the user can only execute some simple commands, like ping and
tracert , and only a few display commands.
The switching of user privilege level is temporary, and effective for the current login; after the user relogs
in, the user privilege restores to the original level.
To avoid misoperations, the administrators are recommended to log in to the device by using a lower
privilege level and view device operating parameters, and when they have to maintain the device, they