Users Guide

Conguration Fundamentals

The Dell Networking OS command line interface (CLI) is a text-based interface that you use to congure interfaces and protocols.

The CLI is structured in modes for security and management purposes. Dierent sets of commands are available in each mode, and

you can limit user access to modes using privilege levels.

In Dell Networking OS, after you enable a command, it is entered into the running conguration le. You can view the current

conguration for the whole system or for a particular CLI mode. To save the current conguration, copy the running conguration to

another location. For more information, refer to Saving the Running-Conguration.

Accessing the Command Line

Access the command line through a serial console port or a Telnet session as shown in the following example.

When the system successfully boots, you enter the command line in EXEC mode (shown in bold).

NOTE: You must have a password congured on a virtual terminal line before you can Telnet into the system. Therefore,

you must use a console connection when connecting to the system for the rst time.

Logging into the System using Telnet

telnet 172.31.1.53

Trying 172.31.1.53...

Connected to 172.31.1.53.

Escape character is '^]'.

Password:

Dell>

CLI Modes

Dierent sets of commands are available in each mode.

A command found in one mode cannot be executed from another mode (except for EXEC mode commands preceded by the do

command; for more information, refer to The do Command and EXEC Privilege Mode commands).

You can set user access rights to commands and command modes using privilege levels; for more information about privilege levels

and security options, refer to Privilege Levels Overview.

The Dell Networking OS 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 congurations, clear counters, manage conguration les, run diagnostics, and

enable or disable debug operations. The privilege level is 15, which is unrestricted. You can congure a password for this mode;

for more information, refer to Conguring the Enable Password.

• CONFIGURATION mode — allows you to congure 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. The following example shows this

sub-mode command structure. When conguring the chassis for the rst time, two sub-CONFIGURATION modes are important:

Conguration Fundamentals