400-007: Cisco Certified Design ExpertDemo

By Cisco · Question Mode

QuestionQ3

Network Design

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With reference to the exhibit, Company XYZ is a large enterprise network in which WAN traffic uses most of the link capacity. The company's IT team frequently reports Stuck-In-Active problems. The company plans to acquire another company that will also run EIGRP and connect to the Company XYZ R3 and R4 routers. This acquisition could worsen the issue. Which design solution resolves this problem?

  • A Implement EIGRP Route Rap Dampening
  • B Utilize the EIGRP unequal cost load-balancing feature on R5 and R6 to provide an interim solution
  • C Advertise only the default route to R5 and R6 filtering all other routes
  • D Deploy the EIGRP stub capability on R5 and R6 with the connected and summary options enabled
Explanation

EIGRP stub routing on edge routers limits the EIGRP query domain, so upstream routers do not query R5 and R6 for routes that those routers cannot provide. Advertising only connected and summary routes preserves advertisement of the edge routers’ local routes while preventing them from being transit points and reducing query-related congestion that can cause stuck-in-active conditions.

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