NSE4 Question #470: Real Exam Question with Answer & Explanation

Question

The exhibit shows two static routes to the same destinations subnet 172.20.168.0/24. Which of the following statements correctly describes this static routing configuration? (choose two)

Options

• ABoth routes will show up in the routing table.
• BThe FortiGate unit will evenly share the traffic to 172.20.168.0/24 between routes.
• COnly one route will show up in the routing table.
• DThe FortiGate will route the traffic to 172.20.168.0/24 only through one route.

Explanation

When multiple static routes are configured for the same destination subnet, FortiGate will prioritize them based on administrative distance and metric, installing only the single best route into the routing table for traffic forwarding.

Common mistakes.

• A. If multiple static routes exist for the same destination, only the one with the highest priority (lowest administrative distance/metric) will be installed in the active routing table.
• B. FortiGate does not automatically perform equal-cost multi-path (ECMP) load balancing for static routes to the same destination; it selects a single best route based on priority.

Concept tested. FortiGate static route selection and administrative distance

Reference. https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/33912/route-priority-and-administrative-distance

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