What must be the status of the link health monitor for a static route to be added by FortiGate?

For a static route to be successfully added by FortiGate, the link health monitor must be in an "up" state. This means that the monitored link must be operational and actively passing traffic. The purpose of a link health monitor is to ensure that the designated path for routing traffic is functioning correctly, providing reliability in routing decisions. If the link monitor indicates that the link is down or inactive, FortiGate will not consider that route viable, preventing potential issues with connectivity and ensuring that routes are only utilized when the links they depend on are confirmed to be operational.

When the link health monitor is active and shows that the link is up, FortiGate can proceed with adding the static route, allowing traffic to flow effectively through the specified route. This functionality is crucial for maintaining network resilience and performance, as it allows FortiGate to dynamically respond to network conditions based on the health of the links.