Câu 50: 400-201: CCIE SP Written v4.1

Refer to the exhibit. Customer ABC is peering with two service providers for Internet access. In order to prevent the AS 100 from becoming a transit AS betweenISP_1 and ISP_2, which BGP configuration must be applied to achieve this goal?

1. A. CE1#CE2#ip as-path access-list 1 permit ^11$ip as-path access-list 1 permit ^$route-map LOCAL_ONLY permit 10route-map LOCAL_ONLY permit 10match as-path 1match as-path1router BGP 100router BGP 100neighbor 1.1.2.2 route-map LOCAL_ONLY outneighbor 1.1.1.2 route-map LOCAL_ONLY out
2. B. CE1#CE2#ip as-path access-list 1 permit ^$ip as-path access-list 1 permit ^$route-map LOCAL_ONLY permit 10route-map LOCAL_ONLY permit 10match as- path 1match as-path 1router BGP 100router BGP 100neighbor 1.1.2.2 route-map LOCAL_ONLY outneighbor 1.1.1.2 route-map LOCAL_ONLY out — đáp án hiện tại
3. C. CE1#CE2#ip as-path access-list1 permit ^100$ip as-path access-list 1 permit ^100$route-map LOCAL_ONLY permit 10route-map LOCAL_ONLY permit 10match as-path 1match as-path 1router BGP 100router BGP 100neighbor 1.1.2.2 route-map LOCAL_ONLY inneighbor1.1.1.2 route-map LOCAL_ONLY in
4. D. CE1#CE2#ip as-path access-list 1 permit ^$ip as-path access-list 1 permit ^$route-map LOCAL_ONLY permit 10route-map LOCAL_ONLY permit 10match as- path 1match as-path 1router BGP 100router BGP 100neighbor 1.1.2.2 route-map LOCAL_ONLY inneighbor 1.1.1.2 route-map LOCAL_ONLY in
5. E. CE1#CE2#ip as-path access-list 1 permit ^100$ip as-path access-list 1 permit ^100$route-map LOCAL_ONLY permit 10route-mapLOCAL_ONLY permit 10match as-path 1match as-path 1router BGP 100router BGP 100neighbor 1.1.2.2 route-map LOCAL_ONLY outneighbor 1.1.1.2 route-map LOCAL_ONLY out