CCDE: Cisco Certified Design Expert (Practical) — Question 30

Company XYZ wants to deploy OSPF. The design plan requires that two OSPF networks be mutually redistributed at multiple locations and ensure end-to-end connectivity to all of the company’s networks. Which technology can be used to fulfill the requirements while avoiding the creation of routing loops?

Answer options

• A. Redistribute routes as external type 2 routes
• B. Create a virtual link between ASBRs
• C. Use route maps on ASBRs to filter routes with tags so they are not redistributed
• D. Change the router ID for both ASBRs

Correct answer: C

Explanation

The correct answer is C, as using route maps on ASBRs to filter routes with tags can effectively prevent the redistribution of certain routes, thereby avoiding routing loops. Options A and B do not address the need to control route redistribution effectively, while option D does not impact routing loops and is irrelevant to the redistribution requirement.