Cisco 7100 Series Especificaciones descargar pdf (Pagina 21)

Using Cisco IOS Software 1-11

Using the no and default Forms of Commands

Almost every conﬁguration command also has a no form. In general, use the no form to

disable a function. Use the command without the keyword no to reenable a disabled

function or to enable a function that is disabled by default. For example, IP routing is

enabled by default. To disable IP routing, specify the no ip routing command and specify

ip routing to reenable it. The Cisco IOS software command references provide the

complete syntax for the conﬁguration commands and describes what the no form of a

command does.

Conﬁguration commands can also have a default form. The default form of a command

returns the command setting to its default. Most commands are disabled by default, so the

default form is the same as the no form. However, some commands are enabled by default

and have variables set to certain default values. In these cases, the default command

enables the command and sets variables to their default values. The Cisco IOS software

command references describe what the default form of a command does if the command

is not the same as the no form.

Saving Conﬁguration Changes

Enter the copy system:running-conﬁg nvram:startup-conﬁg command to save your

conﬁguration changes to your startup conﬁguration so that they will not be lost if there is a

system reload or power outage. For example:

Router# copy system:running-config nvram:startup-config

Building configuration...

It might take a minute or two to save the conﬁguration. After the conﬁguration has been

saved, the following output appears:

[OK]

Router#

On most platforms, this step saves the conﬁguration to nonvolatile random-access memory

(NVRAM). On Class A Flash memory ﬁle systems, such as Cisco 7100 series routers, this

step saves the conﬁguration to the location speciﬁed by the CONFIG_FILE environment

variable. The CONFIG_FILE variable defaults to NVRAM.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 111 112

Sin comentarios

Cisco 7100 Series Especificaciones Pagina 21