Networking Guide
Chapter 5, Configuring Internet Protocol (IP) routing

gated export control statements

gated export control statements

The import statement controls which routes received from other systems are used by gated, and the export statement controls which routes are advertised by gated to other systems. Like the import statement, the syntax of the export statement varies slightly per protocol. The syntax of the export statement is similar to the syntax of the import statement, and the meanings of many of the parameters are identical. The main difference between the two is that while route importation is controlled just by source information, route exportation is controlled by both destination and source.

The outer portion of a given export statement specifies the destination of the routing information you are controlling. The middle portion restricts the sources of importation that you wish to consider. The innermost portion is a route filter used to select individual routes.