Cisco VGD-1T3, Руководство по настройке программного обеспечения

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Using the Command-Line Interface in Cisco IOS Software
Using the CLI
18
Cisco VGD 1T3 Voice Gateway Software Configuration Guide
Using the CLI
This section describes the following topics:
•
Understanding Command Modes, page 18
• Using the Interactive Help Feature, page 20
•
Understanding Command Syntax, page 21
• Understanding Enable and Enable Secret Passwords, page 22
•
Using the Command History Feature, page 23
• Abbreviating Commands, page 24
•
Using Aliases for CLI Commands, page 24
• Using the no and default Forms of Commands, page 24
•
Using the debug Command, page 25
• Filtering Output Using Output Modifiers, page 25
•
Understanding CLI Error Messages, page 26
Understanding Command Modes
The CLI command mode structure is hierarchical, and each mode supports a set of specific commands.
This section describes the most common of the many modes that exist.
Table 3 lists common command modes with associated CLI prompts, access and exit methods, and a
brief description of how each mode is used.
Table 3 CLI Command Modes
Command
Mode Access Method Prompt Exit Method Mode Usage
User EXEC Log in.
Router>
Issue the logout or exit
command.
•
Change terminal
settings.
• Perform basic tests.
•
Display device status.
Privileged
EXEC From user EXEC mode,
issue the enable
command.
Router#
Issue the disable
command or the exit
command to return to
user EXEC mode.
•
Issue show and debug
commands.
• Copy images to the
device.
•
Reload the device.
• Manage device
configuration files.
•
Manage device file
systems.