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Chapter 1
Understanding Interface Numbering and Cisco IOS Software Basics
Saving Configuration Changes
You need to enter the copy running-config startup-config command to save your configuration changes
to nonvolatile random-access memory (NVRAM), so the changes are not lost if there is a system reload
or power outage. For example:
Router# copy running-config startup-config
Building configuration...
It might take a minute or two to save the configuration to NVRAM. After the configuration has been
saved, the following appears:
[OK]
Router#
Upgrading to a New Cisco IOS Release
To install or upgrade to a new Cisco IOS release, see
Cisco VG224 Deployment Scenario
Figure 1-3
Figure 1-3
Where to Go Next
Now that you have learned some Cisco IOS software basics, you can begin to configure the router using
the CLI.
Remember that:
•
•
OL-5005-01
shows a typical deployment scenario for the Cisco VG224 voice gateway.
Analog FXS User Interfaces with Metro Ethernet Interface
Ethernet
RJ-21
VG224
You can use the question mark (?) and arrow keys to help you enter commands.
Each command mode restricts you to a set of commands. If you have difficulty entering a command,
check the prompt and then enter the question mark (?) for a list of available commands. You might
be in the wrong command mode or using the wrong syntax.
How to Update/Upgrade Cisco IOS
Analog
telephones
Distribution
panel
Cisco VG224 Voice Gateway Software Configuration Guide
Upgrading to a New Cisco IOS Release
Software.
1-5
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