Hello...We have an XG firewall configured with (2) WAN interfaces. The primary is a cable connection from COX. We have a second one configured as a Backup in the WAN link manager that is pointing to a CradlePoint router with a Cellular SIM installed. That device has a dynamic IP. This setup used to work fine on the SG we had installed but does not work on the XG so hopefully it is something we have configured incorrectly. I am thinking the issue is DNS since the DNS on the XG is statically assigned to have the PRIMARY as the WAN IP of the COX pipe and the second and third point to 1.1.1.1 and 8.8.8.8. We have read that we should have the secondary be the WAN IP of the secondary connection but it is dynamic so that is not possible. The cellular is working fine since we can ping via the XG dianostics out that connection. The failover rules are the default ones that come up when WAN link manager is configured. All the client computers point to the XG LAN interface for DNS since we do not have an on prem AD server, etc.
So perhaps the issue is the static DNS configuration? Should I change it to automatic ? I assumed it would use all (3) DNS servers in a failover scenario.
Thanks for any info.
Dave
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