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初级工程师
  
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CCNP Routing题库中有一题,对题库的答案有疑问
QUESTION 47
You are troubleshooting an OSPF problem where external routes are not showing up in the OSPF database.
Which two options are valid checks that should be performed first to verify proper OSPF operation?
(Choose two.)
A. Are the ASBRs trying to redistribute the external routes into a totally stubby area?
B. Are the ABRs configured with stubby areas?
C. Is the subnets keyword being used with the redistribution command?
D. Is backbone area (area 0 ) contiguous?
E. Is the CPU utilization of the routers high?
题库的答案是 AC
这里我不解的是为什么选项"A"是正确的?
totally stubby area是不能有ASBR的,而选项A 却说ASBR试图将外部路由重分发入绝对末节区域。
为什么这里选项“B”是错误的?
请各位大虾指教。。。。。 |
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