Hello, Make sure that the static configuration on WAN 1 is exactly what the ISP gave. If the configuration is not applying then the MX might be having issues reaching the gateway of the ISP. If you are still having issues I recommend opening a case with Meraki support. ... View more

Hello, This alert will work on clients on the switch as well.  The MX sends an ARP request to the client approximately every ten seconds to monitor its connectivity status. If the MX does not receive an ARP reply from the client after approximately 35 seconds, it considers the client to be disconnected. ... View more