Which of the following is true about routers internal to a totally NSSA area?（）
- A、Routers cannot redistribute external routes into the area.
- B、Routers should have zero Type 3 LSAs in their LSDBs.
- C、Routers should have zero Type 5 LSAs in their LSDBs.
- D、Routers should learn default routes from the ABRs attached to the area.
正确答案:C,D
答案解析:有
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