Example configuration describing how to distribute the default-route in an OSPF NSSA architectureN/A
This articles explains how to redistribute a default-route into an OSPF NSSA topology.
In an OSPF NSSA (Not-So-Stub-Area) design, there is a need to redistribute the default-route into the area so that all routers know how to forward packets to other areas and the Internet. This is a common requirement, as NSSA only advertises LSA type 7 (routes to external destinations).
The topology below shows an example of an OSPF NSSA architecture. All configurations that follow are based on this topology.
Here are some configuration examples that can be used to achieve the desired solution in the above scenario: