Reference Guide

10 | Configuration Fundamentals
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CLI Modes
Different sets of commands are available in each mode. A command found in one mode cannot be
executed from another mode (with the exception of EXEC mode commands preceded by the command
do;
for more information, refer to do Command and EXEC Privilege Mode commands).
The FTOS CLI is divided into three major mode levels:
• EXEC mode is the default mode and has a privilege level of 1, which is the most restricted level. Only
a limited selection of commands is available, notably the
show commands, which allow you to view
system information.
• EXEC Privilege mode has commands to view configurations, clear counters, manage configuration
files, run diagnostics, and enable or disable debug operations. The privilege level is 15, which is
unrestricted. You can configure a password for this mode. For more information, refer to Configure the
Enable Password.
• CONFIGURATION mode allows you to configure security features, time settings, set logging and
simple network management protocol (SNMP) functions, and static address resolution protocol (ARP)
and MAC addresses on the system.
Beneath CONFIGURATION mode are sub-modes that apply to interfaces, protocols, and features.
Figure 3-2 shows this sub-mode command structure. When configuring the chassis for the first time, the
following two sub-CONFIGURATION modes are important:
• INTERFACE sub-mode is the mode in which you configure Layer 2 and Layer 3 protocols and IP
services specific to an interface. An interface can be physical (management interface, 10-Gigabit
Ethernet, or 40-Gigabit Ethernet) or logical (Loopback, Null, port channel, or VLAN).
• LINE sub-mode is the mode in which you configure the console and virtual terminal lines.
Figure 3-2. FTOS CLI Modes Supported on the Aggregator
Note: At any time, entering a question mark (?) displays the available command options. For example,
when you are in CONFIGURATION mode, entering the question mark first lists all the available
commands, including the possible sub-modes.
EXEC
EXEC Privilege
CONFIGURATION
INTERFACE
10 GIGABIT ETHERNET
INTERFACE RANGE
MANAGEMENT ETHERNET
LINE
CONSOLE
VIRTUAL TERMINAL
MONITOR SESSION