Chapter 45: CLI Overview
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Command Completion
Command completion for command names and options is available at each level of the hierarchy. There are several
options you can use to complete commands.
You can abbreviate commands or keywords: enter only as many characters of the keyword as needed to keep it
unambiguous. For example, you can abbreviate the
configure
command to
config
. After entering the command at the
system prompt, press <Enter> to execute the command.
If you enter a unique set of characters and press the <Tab> key or <Space Bar>, the system will complete the command
name. If you enter a set of characters that could indicate more than one command, the system will respond with the list of
possible matches as shown in the following example:
configure cable mod <Space Bar>
modem
modulation-profile
Command completion will then work if you type either an "e" for "modem" or "u" for "modulation-profile" and press the
<Tab> key or <Space Bar>. The system will complete the command name.
After the command is complete at the system prompt, press <Enter> to execute the command.
Configuring Passwords and Privileges
A simple way of providing terminal access control in your network is by using passwords and assigning privilege levels. By
default, the CMTS CLI has two levels of access to commands: User EXEC mode (level 1) and Privileged EXEC Mode (level
15). However, you can configure additional levels of access to commands, called privilege levels, to meet the needs of your
users while protecting the system from unauthorized access. Up to 15 privilege levels can be configured, from level 1 to 15.
Users who log on with level 15 have access to all commands. Users with privilege level 1 have access only to most show
commands.
The
configure enable
command defaults to privilege 15. If a given command is set to privilege level 7, for example, then
all users having privilege levels 1 through 7 must supply the correct level 7 password before the CMTS will accept the
command.
By configuring the privilege level, you can limit access to each privilege level by enabling separate passwords. For example,
you may want a certain set of users to be able to configure only certain interfaces, but not allow them access to other