CCNP ROUTER(300-101) 문제풀이 NO. 28

QUESTION NO: 28

Router A and Router B are configured with IPv6 addressing and basic routing capabilities using

OSPFv3. The networks that are advertised from Router A do not show up in Router B's routing

table. After debugging IPv6 packets, the message "not a router" is found in the output. Why is the

routing information not being learned by Router B?

A. OSPFv3 timers were adjusted for fast convergence.

B. The networks were not advertised properly under the OSPFv3 process.

C. An IPv6 traffic filter is blocking the networks from being learned via the Router B interface that

is connected to Router A.

D. IPv6 unicast routing is not enabled on Router A or Router B.  

Explanation

문제 : 라우터 A와 B는 IPv6주소와 OSPFv3를 사용한 기본 라우팅으로 설정 되었습니다. 라우터 A로부터 전달 받은 네트워크에는 라우터 B의 라우팅 테이블이 나타나지 않고 있습니다.  IPv6 디버깅 후에 "not a router"란 메시지가 출력에  발견됩니다. 라우팅 정보가 라우터 B에 의해 학습되지 않는 이유는 무엇인가요?

Show ipv6 traffic 명령어를 입력하면 다음과 같이 확인이 가능합니다.

Field	Description
source-routed	Number of source-routed packets.
truncated	Number of truncated packets.
format errors	Errors that can result from checks performed on header fields, the version number, and packet length.
not a router	Message sent when ipv6 unicast routing is not enabled.

정답은 D 입니다.