Panasonic NN46240-501 - Manual (Page 66)

Nortel Secure Router 8000 Series
Configuration Guide - Basic Configuration 3 CLI overview
OQ NOTE
• The system supports commands with a maximum of 256 characters. The command can be in an
incomplete form.
• The system saves an incomplete command to the configuration files in the complete form; therefore,
the command may have more than 256 characters. However, when the system is restarted, the
incomplete command cannot be restored, so note the length of incomplete commands.
3.1.2 Command levels
The system uses a hierarchical protection mode that has 16 command levels in increasing
order.
By default, the commands are registered as one of the following four levels:
• Visit level: Commands of this level include commands of the network diagnosis tool
(such as ping and tracert) and commands that start from the local device and visit an
external device (including Telnet client side, SSH client side, and Rlogin).
• Monitoring level: Commands of this level, including the display command and the
debugging command, are used for tasks such as system maintenance and service fault
diagnosis.
• Configuration level: Commands of this level are service configuration commands that
provide direct network service to the user, including routing and network layer
commands.
• Management level: Commands of this level are commands that influence the base
operation of the system and provide support to the service. They include file system
commands, File Transfer Protocol (FTP) commands, Trivial File Transfer Protocol
(TFTP) commands, Xmodem downloading commands, configuration file switching
commands, power supply control commands, backup board control commands, user
management commands, level setting commands, and system internal parameter setting
commands.
CQ NOTE
• The default command level may be higher than the command level defined according to the
command rules in the application.
• Logon users have the same four levels as the command levels. Logon users can use only the
commands of the levels that are equal to or lower than their own levels. For more information about
logon user levels, see Chapter 5 "User management."
3.1.3 Command line views
The system provides command line views, which correspond to command interfaces. Each
command is registered and runs only in a specific command view.
3.1.4 Regular expressions
When you output information, you can use regular expressions in commands to filter out
unnecessary content and display only the necessary content.
In the commands that support regular expressions, you can use three kinds of filtering modes
to filter the output: | { begin | exclude | include }
regular-expression.
• begin: Displays information that begins with the line that matches regular-expression.
• exclude: Displays information that excludes lines that match regular-expression.
• include: Displays information that includes lines that match regular-expression.
Issue 5.3 (30 March 2009) Nortel Networks Inc. 3-3