CCNP Interview Question:

What is the difference between the types of routes allowed by default into IS-IS and OSPF areas?

Submitted by: Administrator

By default, all routes are advertised into all OSPF areas. This includes interarea OSPF routes and external routes that have been injected into OSPF. By default, IS-IS does not advertise interarea or external routes into an area, but injects a default route.
Submitted by: Administrator