3Com 5500-EI PWR Reference Manual page 6

Executing this command without the level argument will switch the current user level to
level 3 by default.
Note that:
Users logged into the switch fall into four user levels, which correspond to the four
command levels respectively. Users at a specific level can only use the commands at
the same level or lower levels.
You can switch between user levels after logging into a switch successfully. The
high-to-low user level switching is unlimited. However, the low-to-high user level
switching requires the corresponding authentication. The authentication mode can be
set through the super authentication-mode command.
For security purpose, the password entered is not displayed when you switch to
another user level. You will remain at the original user level if you have tried three
times but failed to enter the correct authentication information.
Related commands: super authentication-mode, super password.
Examples
# Switch from the current user level to user level 3, using super password authentication.
<Sysname> super 3
Password:
User privilege level is 3, and only those commands can be used
whose level is equal or less than this.
Privilege note: 0-VISIT, 1-MONITOR, 2-SYSTEM, 3-MANAGE
# Switch from the current user level to level 3, using HWTACACS authentication.
<Sysname> super 3
Username: user@system
Password:
User privilege level is 3, and only those commands can be used
whose level is equal or less than this.
Privilege note: 0-VISIT, 1-MONITOR, 2-SYSTEM, 3-MANAGE
super authentication-mode
Syntax
super authentication-mode { super-password | scheme }*
undo super authentication-mode
View
User interface view
Parameters
super-password: Adopts super password authentication for low-to-high user level
switching.
scheme: Adopts Huawei terminal access controller access control system (HWTACACS)
authentication for low-to-high user level switching.
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