Question 600
A FortiOS 7.6 team examines: A migration plan requires deterministic default-route preference until the primary link fails. Select TWO complementary choices: the most appropriate corrective action AND the specific evidence confirming success.
Explanation
Correct Answers
The reported FortiOS 7.6 condition is: A migration plan requires deterministic default-route preference until the primary link fails. The targeted administrative response is: Configure and verify supported route distance and priority settings so eligible backup routes are preferred only under the intended conditions. The relevant failure risk is: Mismatched distance or priority can select a slower WAN path while the preferred next hop remains available. Validate with: Route-table inspection and a controlled primary-path test confirm expected route preference and backup behavior.
For the observed situation (A migration plan requires deterministic default-route preference until the primary link fails), the most specific acceptance evidence is: Route-table inspection and a controlled primary-path test confirm expected route preference and backup behavior. It validates the recommended response: Configure and verify supported route distance and priority settings so eligible backup routes are preferred only under the intended conditions. This addresses the documented risk: Mismatched distance or priority can select a slower WAN path while the preferred next hop remains available.
Incorrect Answers
Sd-wan performance sla probes (4.2) would demonstrate or implement: Measured link health and an application test agree on which WAN members satisfy the required quality thresholds. The case states: A migration plan requires deterministic default-route preference until the primary link fails. The most direct paired action and test is: Configure and verify supported route distance and priority settings so eligible backup routes are preferred only under the intended conditions.
Sd-wan rule order and route interaction (4.2) would demonstrate or implement: A matching SD-WAN rule cannot guarantee a working connection if candidate routes or the zone firewall policy are absent. This choice can be useful for that problem, but it does not establish the Static route distance and priority control being assessed here.
Sd-wan health failover and session evidence (4.2) addresses another technical failure: Changing WAN path can disrupt established sessions depending on routing, NAT and remote application tolerance. This case instead tests Static route distance and priority; the choice measures or changes another part of the system.