Hello, Please find below updated topology with able to register cloud successfully with two different public IP address by doing translation at Edge firewall. However, the problem is how to detect ISP failover occur at Edge firewall level so accordingly, it will trigger the failover at Meraki WAN interface.
As per the above diagram, LAN ports are in VLAN 400 and subnet 10.20.30.x/24
WAN1 Port is in VLAN 200 and subnet 10.20.40.2/29 translate with ISP 1 public IP address.
WAN2 Port is in VLAN 300 and subnet 10.20.50.2/29 translate with ISP 2 public IP address.
Switch 1 and 2 are layer 2 switch and connected to each other via the port channel in trunk mode.
Same Edge Firewalls are connected to switches via the port channel and define Meraki next hop IP addresses on the firewall.
Now, Meraki registered with cloud successfully with two ISP public IP address. Also, these two public IP will form Auto VPN tunnel with other branch Meraki devices. Currently, we have set WAN 1 as a preference due to ISP 1 is the primary path at Edge firewall. However, the problem is to detect ISP failover at Edge firewall level in order to shift the connection from WAN1 to WAN 2 and Vice and Versa.
Below two IP address configured for uplink statistics.
1) Google DNS (4.2.2.2)
2) ISP 1 Next-hop IP address.
Please let me know your inputs, as per my understanding I have to check at Edge firewall PBF rules to trigger Meraki failover when ISP failover at Edge firewall.
