HP 5500 Ei 5500 Si Switch Series Configuration Guide

9 
Using the command history function 
The system can automatically save successfully executed commands to the command history buffer for 
the current user interface. You can view them and execute them again, or set the maximum number of 
commands that can be saved in the command history buffer. 
A command is saved to the command history buffer in the exact format as it was entered. For example, 
if you enter an incomplete command, the command saved in the command history buffer is also 
incomplete; if...

10 
Controlling the CLI output 
This section describes the CLI output control features that help you quickly identify the desired output. 
Pausing between screens of output 
If the output being displayed is more than will fit on one screen, the system automatically pauses after 
displaying a screen. By default, up to 24 lines can be displayed on a screen. To change the screen length, 
use the  screen-length  screen-length  command. For more information about this command, see 
Fundamentals Command...

11 
Table 6 Special characters supported in a regular expression 
Character Meanin
g Remarks 
^string  Starting sign. Matches a line that 
starts with 
string.  For example, regular expr
ession ^user matches a 
line beginning with user, not Auser. 
string$  Ending sign. Matches a line that 
ends with 
string.  For example, regular expression user$ only 
matches a line ending with user, not userA. 
. Matches any single character, such 
as a single character, a special 
character, and a blank. 
For...

12 
Character Meaning Remarks 
[^] Matches a single character not 
contained within the brackets.  For example, [^16A] means to match a string 
containing any character except 1, 6 or A, and the 
matching string can also contain 1, 6 or A, but 
cannot contain only these three characters. For 
example, [^16A] matches abc and m16, but 
not 1, 16, or 16A. 
\ matches word undo and 
string abcdo. 
\bcharacter2 Matches character1character2. 
character1
 can be any character 
except number, letter or underline,...

13 
# Use | include Vlan in the display ip routing-table command to filter in route entries that contain  Vlan. 
 display ip routing-table | include Vlan 
Routing Tables: Public 
 
Destination/Mask    Proto  Pre  Cost         NextHop         Interface 
 
192.168.1.0/24      Direct 0    0            192.168.1.42    Vlan999 
Configuring user privilege and command levels 
To avoid unauthorized access, the device defines  the user privilege levels and command levels in Tabl e  
7
. User privilege levels...

14 
For more information about user login authentication, see Logging in to the CLI. For more information 
a
bout AAA and SSH, see  Security Configuration Guide .  
Configuring a user privilege level for users by using the AAA module 
 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Enter user interface view.  user-interface { 
first-num1 
[ last-num1  ] | { aux |  vty } 
first-num2 [ last-num2  ] }  N/A 
3.
  Specify the scheme 
authentication mode.  authentication-mode
 scheme   By...

15 
[Sysname-luser-test] authorization-attribute level 3 
Configuring the user privilege level directly on a user interface 
To configure the user privilege level directly on a user interface that uses the scheme authentication mode:  
Step Command Remarks 
1.  Configure the authentication 
type for SSH users as 
publickey .  For more information, see Security 
Configuration Guide
. Required only for SSH users who 
use public-key authentication. 
2.
  Enter system view. 
system-view  N/A 
3.  Enter user...

16 
  ping     Ping function 
  quit     Exit from current command view 
  rsh      Establish one RSH connection 
  ssh2     Establish a secure shell client connection 
  super    Set the current user priority level 
  telnet   Establish one TELNET connection 
  tftp     Open TFTP connection 
  tracert  Trace route function 
# Configure the device to perform no authentication for Telnet users, and to authorize authenticated 
Telnet users to use level-0 and level-1 commands. (Use no authentication mode...

17 
Switching the user privilege level 
Users can switch to a different user privilege level without logging out and terminating the current 
connection. After the privilege level switching, users can continue to manage the device without 
relogging in, but the commands they can execute have changed. For example, with the user privilege 
level 3, a user can configure system parameters. After switching to user privilege level 0, the user can 
execute only basic commands like  ping and  tracert  and use a...

18 
Step Command Remarks 
1.  Enter system view. 
system-view  N/A 
2.  Set the authentication mode 
for user privilege level 
switching.  super authentication-mode 
{ local 
|  scheme  } *   Optional. 
By default, local-only 
authentication is used. 
3.
  Configure the password for a 
user privilege level.  super password 
[ level user-level  ] 
{  cipher  | simple }  password  Required for loca
l authentication. 
By default, a privilege level has no 
password. 
If no user privilege level is specified...