Juniper JUNOS OS 10.3 - SOFTWARE, Manual

Page: 240 / 3946

To complete a command, statement, or option that you have partially typed, press the
Tab key or the Spacebar. If the partially typed letters uniquely identify a command, the
complete command name appears. Otherwise, a beep indicates that you have entered
an ambiguous command and the possible completions are displayed. This completion
feature also applies to other strings, such as filenames, interface names, usernames, and
configuration statements.
CLI Command Modes
The CLI has two modes, operational mode and configuration mode.
In operational mode, you enter commands to monitor and troubleshoot switch hardware
and software and network connectivity. Operational mode is indicated by the
>
prompt—for example,
user@switch>
.
In configuration mode, you can define all properties of the Juniper Networks Junos
operating system (Junos OS), including interfaces, VLANs, Virtual Chassis information,
routing protocols, user access, and several system hardware properties.
To enter configuration mode, enter the
configure
command: .
user@switch> configure
Configuration mode is indicated by the
#
prompt, and includes the current location in
the configuration hierarchy—for example:
[edit interfaces ge-0/0/12]
user@switch#
In configuration mode, you are actually viewing and changing the candidate configuration
file. The candidate configuration allows you to make configuration changes without
causing operational changes to the current operating configuration, called the active
configuration. When you commit the changes you added to the candidate configuration,
the system updates the active configuration. Candidate configurations enable you to
alter your configuration without causing potential damage to your current network
operations.
To activate your configuration changes, enter the
commit
command.
To return to operational mode, go to the top of the configuration hierarchy and then
quit—for example:
[edit interfaces ge-0/0/12]
user@switch# top
[edit]
user@switch# exit
You can also activate your configuration changes and exit configuration mode with a
single command,
commit and-quit . This command succeeds only if there are no mistakes
or syntax errors in the configuration.
Copyright © 2010, Juniper Networks, Inc. 144
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3