Undoing Commands; Obtaining Help - Dell C9000 Series Networking Configuration Manual

3 24-port TE/GE (VG)
4 6-port TE/FG (VG)
2 4-port TE/GE (VG)
208 Ten GigabitEthernet/IEEE 802.3 in10 Forty GigabitEthernet/IEEE 802.3
interface(s)
Dell#
Dell(conf)#do show running-config interface tengigabitethernet 0/0
!
interface TenGigabitEthernet 0/0
no ip address
shutdown
Dell(conf)#

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 4/17
Dell(conf-if-te-4/17)#ip address 192.168.10.1/24
Dell(conf-if-te-4/17)#show config
!
interface TenGigabitEthernet 4/17
ip address 192.168.10.1/24
no shutdown
Dell(conf-if-te-4/17)#no ip address
Dell(conf-if-te-4/17)#show config
!
interface TenGigabitEthernet 4/17
no ip address
no shutdown
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.

Obtaining Help

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 lists all of the available keywords. The output of this command is the
same as the help command.
Dell#?
calendar Manage the hardware calendar
cd Change current directory
change Change subcommands
clear Reset functions
Obtaining Help.
Configuration Fundamentals 46