Routing policies can control the content of the routing tables, the routes that are advertised and the best route to take to reach a destination. Import route policies determine which routes are accepted from RIP neighbors. Export route policies determine which routes are exported from the route table to RIP. By default, RIP does not export routes it has learned to its neighbors.
There are no default routing policies. A policy must be created explicitly and applied to a RIP import or export command.