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Question RTE:146 Clarification/Possible Error - Printable Version

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Question RTE:146 Clarification/Possible Error - arrasmithf - 03-11-2011

I think I either found a typo on this question, or need some clarification on it.  The Question states:

-That AS 65500 is not advertising the prefix 192.168.12.0/22
-OSPF is being used as IGP
-Which addition will advertise the prefix?

- I answered "redistribute ospf 1" which now i think is a gotcha because the question never tells you which process ID OSPF is running on, but I answered that because you can redistribute OSPF routes into BGP.

BUT

-The answer listed as correct puts a static route to null0 at 192.168.12.0 but with a mask of 255.255.255.252 , which is a /30 and not a /22. If it was a /30 then BGP would not use this route to advertise to its neighbor because the specific prefic must be in the routing table, correct?

BTW, I'm taking my test tomorrow.  I will post my results when I get them.


Re: Question RTE:146 Clarification/Possible Error - arrasmithf - 03-11-2011

OK, I got this question on the exam.  How2pass has it as a typo.  The answer is in fact to put a static route to null0 that matches the route/mask of your internal routes.  I got a 941 total, and 100% on the BGP section according to my score report, so I'm confident that the answer is right.


Re: Question RTE:146 Clarification/Possible Error - sdunn96 - 03-17-2011

Good to know, and your logic looks right to me.

For BGP to advertise route, it has to be in the routing table first.