Question 990
At Merriton Regional Hospital, the FortiGate 7.6 security administration team encounters the following authorized operational case: a rule forces all finance traffic onto one provider and keeps attempting the unhealthy member during a fault. They need a defensible FortiOS configuration, diagnosis, validation or prevention decision. What root condition most directly explains the described FortiGate symptom?
Explanation
Correct Answer
A fixed preferred member without relevant health conditions can remain selected despite degraded service. The mechanism is relevant because the stated sd-wan preferred-member failover incident concerns the actual selected path, policy, identity or inspection state. The appropriate response is to configure supported SLA-aware primary and fallback member behavior; verify it through this observed condition: an authorized loss test moves new finance sessions to the approved healthy backup.
Incorrect Answers
A blackhole route intentionally discards matching packets even when an apparently usable default exists explains a different situation, static route blackhole diagnosis, where firewall traffic stops at a static blackhole rule added as a temporary workaround and later forgotten. It does not account for the specific observed sd-wan preferred-member failover condition at Merriton Regional Hospital. The decisive mechanism here is: A fixed preferred member without relevant health conditions can remain selected despite degraded service.
SD-WAN zones and service-member scope help separate connectivity roles explains a different situation, sd-wan per-zone segmentation, where a guest internet link appears as eligible for private branch traffic because dissimilar links were placed in one broad SD-WAN selection pool. It does not account for the specific observed sd-wan preferred-member failover condition at Merriton Regional Hospital. The decisive mechanism here is: A fixed preferred member without relevant health conditions can remain selected despite degraded service.
Explicit steering constraints can prevent normal traffic from moving when the only eligible member is unavailable explains a different situation, sd-wan preferred route during maintenance, where an operator disables a WAN member for planned maintenance but the documentation says the service is pinned to that member with no fallback. It does not account for the specific observed sd-wan preferred-member failover condition at Merriton Regional Hospital. The decisive mechanism here is: A fixed preferred member without relevant health conditions can remain selected despite degraded service.