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Implementing Cisco Enterprise Advanced Routing and Services (300-410 ENARSI) Exam Materials - Question #109 Discussion

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Refer to the exhibit. R2 has been receiving routes from R4 that originated outside AS300. A network engineer configured an AS-Path ACL to avoid adding these routes to the R2 BGP table, but the routes are still present in the R2 routing table. Which action resolves the issue? (Choose one answer)

  • A. Replace as-path access-list 1 with the ip as-path access-list 1 permit _300_ command.
  • B. Replace as-path access-list 1 with the ip as-path access-list 1 permit ^300.* command.
  • C. Replace as-path access-list 1 with the ip as-path access-list 1 permit ^300_ command.
  • D. Replace as-path access-list 1 with the ip as-path access-list 1 permit ^300$ command.
Correct Answer: D

Brave-Dump Community Votes

Answer: D (2 votes) 100%

Community Explanations & Comments (2)

Anonymous User 1 month ago
Selected: D
i think its D
y 2 weeks ago
Selected: D
Correct answer D (^300$)

This expression allows only routes originating from AS300. Routes passing through AS300 but originating from another AS (such as 300 200) are blocked

https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13754-26.html