Cisco CCNA Routing and Switching ICND2 200-101 Official Cert Guide

OSPF Default Routes

In some cases, routers benefit from using a default route. This section looks at a strategy for using default IP routes, one in which an OSPF router creates a default route and also advertises it with OSPF, so that other routers learn default routes dynamically.

The most classic case for using a routing protocol to advertise a default route has to do with an enterprise’s connection to the Internet. As a strategy, the enterprise engineer uses these design goals:

All routers learn specific routes for subnets inside the company; a default route is not needed when forwarding packets to these destinations.

One router connects ...