- Is it possible to separate one pair of Meraki MX HA Route mode over the WAN having redundant L2 links among them? - Which is the maximum latency required to separate Meraki MX HA over WAN? - Assuming that the VRRP heartbeat is sent from the active MX to a warm spare MX every second, could I assume the maximum latency must be less than one second? A pair of MX in an HA configuration will use VRRP advertisements to monitor the status of the current active. In a working state, the active MX will send VRRP advertisements out to the LAN every second. https://documentation.meraki.com/MX/Networks_and_Routing/Routed_HA_Failover_Behavior#VRRP_Mechanics_for_HA - Considering the followings requirements and best practices, Is It possible to install in two different DC the Meraki MX HA Route mode, if there is more than one hop considering the WAN links? The two MXs should be connected to each other through a downstream switch (or, ideally, multiple switches) on the LAN to allow for passing VRRP heartbeats. There should be no more than one additional hop between them, and they must be able to communicate on all VLANs. https://documentation.meraki.com/MX/Deployment_Guides/MX_Warm_Spare_-_High_Availability_Pair
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