Undoing Commands; Obtaining Help - Dell S4048–ON Configuration Manual

S-series 10gbe switches

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Table of Contents

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Power Supplies

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Speed in RPM

Undoing Commands

When you enter a command, the command line is added to the running configuration file (running-config).

To disable a command and remove it from the running-config, enter the no command, then the original command. For example, to

delete an IP address configured on an interface, use the no ip address ip-address command.

NOTE: Use the help or ? command as described in

Example of Viewing Disabled Commands

Dell(conf)#interface tengigabitethernet 2/17

Dell(conf-if-te-2/17)#ip address 192.168.10.1/24

Dell(conf-if-te-2/17)#show config

interface TenGigabitEthernet 2/17

ip address 192.168.10.1/24

Dell(conf-if-te-2/17)#no ip address

Dell(conf-if-te-2/17)#show config

interface TenGigabitEthernet 2/17

no ip address

Layer 2 protocols are disabled by default. To enable Layer 2 protocols, use the no disable command. For example, in PROTOCOL

SPANNING TREE mode, enter no disable to enable Spanning Tree.

Obtain a list of keywords and a brief functional description of those keywords at any CLI mode using the ? or help command:

To list the keywords available in the current mode, enter ? at the prompt or after a keyword.

Enter ? after a command prompt to list all of the available keywords. The output of this command is the same as the help

Configuration Fundamentals

Change current directory

Reset functions

Manage the system clock

Configuring from terminal

Copy from one file to another

FanSpeed(rpm)