Router updating values from configuration document
If any value is not of the expected type, is mandatory and yet undefined, or could not be validated in some other way, an exception will be thrown.NOTE: in v7 many of these settings are not explicitly contained in the configuration file that is shipped with Umbraco and most of these settings have default values assigned.You can also create a configuration while typing at the terminal and then load it.
You would use this, for example, if there is an existing BGP configuration and the file you are loading changes it in some way.
For example, suppose that you configure a routing policy on router1 and you want to replicate the policy configuration on router2, router3, and router4. Press Enter and then press Ctrl-d to end the operation.
If the patch input specifies different values for an existing statement, the patch input overrides the existing statement.
To load an existing configuration file that is located on the router, use the tags that you added to the loaded file, and replaces the parts of the candidate configuration with whatever is specified after the tag.
This is useful when you want more control over exactly what is being changed.
You can create a file containing configuration data for a device running Junos OS, copy the file to the local router, and then load the file into the CLI.