Cisco ASR 901 User Manual

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Cisco ASR 901 Aggregation Services Router Command Reference Guide
OL-26031-07
Chapter 1 Using Command-Line Interface
Using the No and Default Forms of Commands
Using the No and Default Forms of Commands
Almost every configuration command has a no form. In general, enter 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. This publication provides the complete
syntax for the configuration commands and describes what the no form of a command does.
Configuration commands can 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 arguments that are set to certain default
values. In these cases, the default form of the command enables the command and sets arguments to
their default values. This publication describes what the default form of a command does if the
command is not the same as the no form.
Saving Configuration Changes
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, enter the following command:
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#

Cisco ASR 901 Specifications

General

Brand	Cisco
Model	ASR 901
Category	Network Router
Language	English