According to what I learned from Cisco documents, by default a normal NSSA area's ABR does not create a default route. Unless you use the command:
Area 1 nssa default-information-originate
on ASBRs or ABRs.But if an area is a totally NSSA area, its ABR will create a Type 3 LSA containing a default route in the area.
Does this mean if an area is NSSA totally, the ASBR's external default route would conflict with ABR's default route? I know I should test it in the lab first, but I cannot help getting the answer immediately.
Thanks for your answers!