3Com 8807 Configuration Manual page 22

22 C 2: C
HAPTER OMMAND
L I
INE NTERFACE
Configuration level: Service configuration commands, including routing
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command and commands on each network layer, are used to provide direct
network service to the user.
Management level: They are commands that influence basis operation of the
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system and system support module, which plays a support role on service.
Commands of this level involve file system commands, FTP commands, TFTP
commands, XModem downloading commands, user management commands,
and level setting commands.
At the same time, login users are classified into four levels that correspond to the
four command levels respectively. After users of different levels log in, they can
only use commands at the levels that are equal to or lower than its own level.
In order to prevent unauthorized users from illegal intrusion, user will be identified
when switching from a lower level to a higher level with super [ level ] command.
User ID authentication is performed when users at lower level switch to users at
higher level. In other words, user password of the higher level is needed (Suppose
the user has set the super password [ level level ] { simple | cipher } password.)
For the sake of confidentiality, on the screen the user cannot see the password
that he entered. Only when correct password is input for three times, can the user
switch to the higher level. Otherwise, the original user level will remain
unchanged.
Different command views are implemented according to different requirements.
They are related to one another. For example, after logging in the switch, you will
enter user view, in which you can only use some basic functions such as displaying
the running state and statistics information. In user view, key in system-view to
enter system view, in which you can key in different configuration commands and
enter the corresponding views.
The command line provides the following views:
User view
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System view
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Port view
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VLAN view
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VLAN interface view
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Local-user view
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User interface view
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FTP Client command view
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SFTP Client view
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MST region view
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PIM view
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MSDP view
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IPv4 multicast sub-address family view
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RIP view
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OSPF view
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