R3102-R3103-HP 6600/HSR6600 Routers Fundamentals Configuration Guide

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Managing configuration files
You can manage configuration files at the CLI or by using the Boot menu of the device. This chapter
explains how to manage configuration files from the CLI.
Overview
A configuration file saves configurations as a set of text commands. You can save the running
configuration to a configuration file so the configuration takes effect after you reboot the device. You can
also back up the configuration file on to a host and download the file to the device as needed.
Configuration types
The device has the following types of configurations: factory defaults, startup configuration, and running
configuration.
Factory defaults
The device is shipped with some basic settings called "factory defaults." These default settings make sure
the device can start up and run correctly when it has no configuration file or the configuration file is
corrupted.
Factory defaults vary with device models and might differ from the default settings of commands.
Startup configuration
The device uses startup configuration to configure software features during startup. After the device starts
up, you can specify a different configuration file to be loaded at the next startup. This configuration file
is called the "next-startup configuration file." The configuration file that has been loaded is called the
"current startup configuration file."
If no next-startup configuration file exists, the system starts up with the factory defaults.
You can view the startup configuration in either of the following ways:
• Execute the display startup command. To view detailed file contents, use the more command.
• After the device reboots, execute the display current-configuration command before making any
configuration changes.
Running configuration
Running configuration includes the startup settings that have not been changed and the new settings you
have made. It is stored in a volatile storage medium and takes effect while the device is operating.
New settings take effect immediately, but they must be saved to a configuration file to survive a reboot.
To view the running configuration, use the display current-configuration command.