Understanding SD-WAN related logs

This topic lists the SD-WAN related logs and explains when the logs will be triggered.

Health-check detects a failure:
  • When health-check detects a failure, it will record a log:
    1: date=2021-04-20 time=17:06:31 eventtime=1618963591590008160 tz="-0700" logid="0100022921" type="event" subtype="system" level="critical" vd="root" logdesc="Routing information changed" name="test" interface="R150" status="down" msg="Static route on interface R150 may be removed by health-check test. Route:  (10.100.1.2->10.100.2.22 ping-down)"
  • When health-check detects a recovery, it will record a log:
    2: date=2021-04-20 time=17:11:46 eventtime=1618963906950174240 tz="-0700" logid="0100022921" type="event" subtype="system" level="critical" vd="root" logdesc="Routing information changed" name="test" interface="R150" status="up" msg="Static route on interface R150 may be added by health-check test. Route:  (10.100.1.2->10.100.2.22 ping-up)"
Health-check has an SLA target and detects SLA qualification changes:
  • When health-check has an SLA target and detects SLA changes, and changes to fail:
    1: date=2021-04-20 time=21:32:33 eventtime=1618979553388763760 tz="-0700" logid="0113022923" type="event" subtype="sdwan" level="notice" vd="root" logdesc="Virtual WAN Link status" eventtype="Health Check" healthcheck="test" slatargetid=1 oldvalue="2" newvalue="1" msg="Number of pass member changed."
    2: date=2021-04-20 time=21:32:33 eventtime=1618979553388751880 tz="-0700" logid="0113022923" type="event" subtype="sdwan" level="notice" vd="root" logdesc="Virtual WAN Link status" eventtype="Health Check" healthcheck="test" slatargetid=1 member="1" msg="Member status changed. Member out-of-sla."
    
  • When health-check has an SLA target and detects SLA changes, and changes to pass:
    1: date=2021-04-20 time=21:38:49 eventtime=1618979929908765200 tz="-0700" logid="0113022923" type="event" subtype="sdwan" level="notice" vd="root" logdesc="Virtual WAN Link status" eventtype="Health Check" healthcheck="test" slatargetid=1 oldvalue="1" newvalue="2" msg="Number of pass member changed."
    2: date=2021-04-20 time=21:38:49 eventtime=1618979929908754060 tz="-0700" logid="0113022923" type="event" subtype="sdwan" level="information" vd="root" logdesc="Virtual WAN Link status" eventtype="Health Check" healthcheck="test" slatargetid=1 member="1" msg="Member status changed. Member in sla."
    
SD-WAN calculates a link's session/bandwidth over/under its ratio and stops/resumes traffic:
  • W