| Description | This article explains a known issue in FortiOS where setting a long SD-WAN Performance SLA 'Link Status Check Interval' (5000 milliseconds or greater) may cause SLA members to appear down. |
| Scope | FortiGate v7.6 and earlier. |
| Solution |
In affected firmware versions, configuring the Performance SLA Link Status Check Interval to 5000 milliseconds or greater may result in a cosmetic issue where all SD-WAN SLA members appear down even though the health checks continue to function normally and receive expected responses within the probe timeout interval.
An informational message stating 'All participants of <Performance SLA Name> are down' may be displayed as shown in the screenshot above, even though internet destinations remain reachable from the FortiGate and for users behind it.
This issue has internal ID# 1167276 and is scheduled for fix in firmware versions v8.0.0, v7.6.3, and v7.4.9.
Workaround: To avoid triggering this display issue, configure the Link Status Check Interval below 5000 milliseconds. |
