Creating a cluster across the network
We currently have two M370 fireboxes that are located next to each other with a single ethernet cable connecting the cluster interfaces.
We wish to move one of the fireboxes into a different server room at the other end of the premises but still wish for them operate as a cluster.
I have found the following advice (from: https://www.watchguard.com/help/docs/help-center/en-US/Content/en-US/Fireware/ha/cluster_hardware_setup_wsm.html
"We recommend that you do not use a switch between each member for the cluster interfaces. If you do use a switch between cluster interfaces, the cluster interfaces must be logically separated from each other on different VLANs."
However, is this worded correctly? Surely it means that the cluster interfaces must be connected by their own VLAN, separate from all other interfaces? Because otherwise how would the fireboxes communicate across the cluster interfaces?