hi @NorwegianFrog
https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/Connection_Monitoring_for_WAN_Failo...
"The MX then begins performing the internet test. If either the ICMP or the HTTP test is successful, the internet test is marked as good for 300 seconds on that uplink. During this time, the MX continues running the internet test every 150 seconds. Each successful internet test (meaning either a successful ICMP test or a successful HTTP test) results in the internet being marked as good for another 300 seconds. If any test within the internet group fails, the MX decreases the testing interval to 20 seconds. If the tests continue to fail for a time period exceeding 300 seconds from the last successful test, the internet will be marked as failed on the uplink. Otherwise, any successful ICMP or HTTP test will mark the internet test as good for another 300 seconds. Once marked as good, the test is run every 150 seconds."
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.