Building on @ww's answer; in short, you need to purchase an Internet circuit capable of supporting HA.  A single PPPoE circuit can not support HA.  You'll need the provider to:   Give you a circuit with at least a /29 of address space (and it won't be using PPPoE), which you'll need to plug into a switch (unless the provider supplies one in their CPE), and then plug both MX in it.  This is more of a "business grade" service and will almost certainly cost a lot more than what you are paying for now. Get a pair of PPPoE circuits.  You won't have inbound failover for things like NAT, but AutoVPN and client VPN (using DNS) will be able to failover ... View more

Yes MX65 is not a WiFi unit, we have Cisco Meraki AP. It is the security appliance. Last time we open a case with Meraki support they suggest updating the firmware of Mx65.    Our MX is configured as PPoE. How to configure HA (Active -Active or Active - Passive) if we have 2 MX65? ... View more