In a nonbackbone OSPF area, all traffic that is destined to the Internet is routed by using a default
route that is originated by the ABR. Which change in the configuration of the OSPF area type causes
traffic from that area that is destined to the Internet to be dropped?
A.
The OSPF area changes from NSSA to totally stubby area.
B.
The OSPF area changes from NSSA to regular area.
C.
The OSPF area changes from stub area to totally stubby area.
D.
The OSPF area changes from stub area to NSSA.
The ABR for the NSSA generates the default route, but not by default. To force the ABR to
generate the default route, use the area nssa default-information originate command.
The ABR generates a Type 7 LSA with the link-state ID 0.0.0.0 and is advertised inside the NSSA.
This default route will be propagated inside the NSSA as Type 7 LSA
Reference. http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13692-
21.html#nssas
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Great job, Freddy!!!!!
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