Technical Tip: Behavior of SD-WAN performance SLA pass-fail logs

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Description	This article describes the behavior of SD-WAN performance SLA logs.
Scope	FortiGate v7.2.3 and onwards.
Solution	Before v7.2.3, FortiGate by default generates SD-WAN pass and fail logs along with the packet loss, jitter, and latency information once the target SLA is enabled; however, starting from v7.2.3 onwards target SLA is not needed to send the real-time SD-WAN logs to the syslog server or FortiAnalyzer. To configure the SD-WAN performance target SLA as per the screenshot below, the logs have to be forwarded to the syslog server or FortiAnalyzer. The SD-WAN logs get generated at the interval of time that is specified in the performance SLA configuration. To configure the pass-fail log time interval via CLI in the SD-WAN configuration:  config system SDWAN      config health check.         edit "Test Server"             set sla-fail-log-period 30           <----- Fail log interval.             set sla-pass-log-period 30           <----- Pass log interval.         next     end SD-WAN pass logs: date=2025-06-06 time=21:23:27 eventtime=1749245007370203780 logid="0113022925" type="event" subtype="sdwan" level="information" vd="root" logdesc="SDWAN SLA information" eventtype="SLA" healthcheck="Test Server" interface="port1" status="up" latency="2.674" jitter="0.021" packetloss="0.000" moscodec="g711" mosvalue="4.403" inbandwidthavailable="10.00Gbps" outbandwidthavailable="10.00Gbps" bibandwidthavailable="20.00Gbps" inbandwidthused="0kbps" outbandwidthused="43kbps" bibandwidthused="43kbps" slamap="0x0" msg="Health Check SLA status." SD-WAN fail logs:  date=2025-06-06 time=21:23:27 eventtime=1749245007370203813 logid="0113022933" type="event" subtype="sdwan" level="information" vd="root" logdesc="SDWAN SLA information" eventtype="SLA" healthcheck="Test Server" interface="port3" status="down" latency="0.00" jitter="0.000" packetloss="100.000" moscodec="g711" mosvalue="0.000" inbandwidthavailable="10.00Gbps" outbandwidthavailable="10.00Gbps" bibandwidthavailable="20.00Gbps" inbandwidthused="0kbps" outbandwidthused="43kbps" bibandwidthused="43kbps" slamap="0x0" msg="Health Check SLA status. SLA failed due to being over the performance metric threshold."