Refer to the exhibit. A network engineer must correct the security policy on the EDGE_R router, which is connected to two Tier 1 ISPs. After another engineer added ip as-path access-list 11 permit 11 to EDGE_R, some routes from AS 11 and AS 4832 started to appear in the routing information base (RIB). Traffic control via Community options is disabled on both ISPs.
How should the network engineer update the router configuration on EDGE_R so that only routes for AS 11 are permitted?

A. Configure ip as-path distribution-list 11 deny *[0-9]+$.

B. Configure ip as-path access-list 11 deny_4832$.

C. Configure ip as-path access-list 11 permit_11_.

D. Configure ip as-path prefix-list 11 permit_11$.








 

Suggested Answer: B



This question is in 300-510 Implementing Cisco Service Provider Advanced Routing Solutions (SPR) Exam
For getting Cisco Certified Network Professional Service Provider (CCNP Service Provider) Certificate



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