Designing Cisco Enterprise Networks (ENSLD) — Question 311

A customer reports that each time a networking component fails, OSPF recalculates the backup path, with causes a short outage. Which solution must the customer implement to improve this situation?

Answer options

Correct answer: B

Explanation

Implementing LFA FRR (Loop Free Alternate Fast Reroute) allows OSPF to quickly switch to a backup path without needing to recalculate the entire topology, thus minimizing the outage time. Aggressive OSPF timers, while they can speed up OSPF updates, do not directly address the issue of backup path calculation. Incremental SPF can also help but is not as effective as LFA FRR in this specific scenario, and BFD (Bidirectional Forwarding Detection) is more about detecting failures quickly than preventing outages during recalculations.