Chapter 3 Installing the Router
Configuration Changes
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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
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Saving the Running Configuration Settings to NVRAM
To save the running configuration changes to NVRAM, enter the copy
running-config startup-config command at the privileged EXEC mode prompt
as follows:
Router# copy running-config startup-config
You can also use the following command to save the running configuration
settings:
Router# write memory
Either command saves to NVRAM the configuration settings that you created
while in the global configuration mode. If you do not save the running
configuration settings to NVRAM, your configuration settings will be lost the
next time you reload the system.
Reviewing the Running Configuration Settings
To display the running configuration settings stored in NVRAM, enter the
show startup-config command at the privileged EXEC mode prompt on the
system console. This command displays output in the form shown in the example
that follows below. Depending on the image version of the Cisco IOS software
running on your router and the way it is equipped, the results of your show
startup-config command might be different.

show startup-config Command

Router# show startup-config
Using 5560 out of 520184 bytes
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router
!
enable secret 5 $1$/5HX$OOvyhG2JYhNaCbPa45Wmn/
enable password wilma