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Managing configuration files
Overview
A configuration file saves a set of commands for configuring software features on the device. You can
save any configuration to a configuration file so they can survive a reboot. You can also back up
configuration files to a host for future use.
You can use the CLI or the Boot menus to manage configuration files. This chapter explains how to
manage configuration files from the CLI.
Configuration types
The configuration loaded at startup is called startup configuration and the configuration that is
running on the device is called running configuration.
Startup configuration
The device uses startup configuration to configure software features during startup.
The following are sources of startup configuration:
Initial settings—Initial values or states for parameters. If the device starts up with empty
configuration, all parameters use their initial settings at startup.
No commands are available to display the initial settings. For more information about these
settings, see the Default sections in the command references.
Factory defaults—Product-specific default settings that are different from initial settings. The
factory defaults are included in the .ipe software image file. If you do not configure the device to
start up with the initial settings or a startup configuration file, the device loads the factory
defaults to configure features at startup. If a parameter is not included in the factory defaults,
the device uses its initial settings.
To display the factory defaults, use the display default-configuration command.
Startup configuration file—Configuration file you specify in the Boot menus or CLI for startup.
The file is called the next-startup configuration file. After the file is loaded at startup, it is also
called the current startup configuration file. For high availability, you can specify two
next-startup configuration files, one main and one backup (see "
Specifying a next-startup
configuration file").
To display the current startup configuration file and the next-startup configuration files, use the
display startup command.
To display the contents of the configuration file for the next system startup, use the display
saved-configuration command. This command does not display settings that have not been
saved to the configuration file.
Running configuration
The running configuration includes unchanged startup settings and new settings. The running
configuration is stored in the memory and is cleared at a device reboot or power off. To use the
running configuration after a power cycling or reboot, save it to a configuration file.
To display the running configuration, use the display current-configuration command. The
displayed configuration does not include parameters that use initial settings.
Startup configuration loading process
Figure 30 shows the configuration loading process during startup.
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