| Description |
This article describes how to configure wan1 as a static interface and wan2 as DHCP interface and set up an ISP failover between them. |
| Scope | FortiGate, v7.x. |
| Solution |
Configuring the interfaces.
To configure wan1 as static Enable SD-WAN and add wan1 : Go to Network -> Interfaces, select the WAN port to configure, set the Addressing mode as 'Manual', enter the 'IP/Netmask' and select 'OK'.
To configure wan2 as DHCP: Go to Network -> Interfaces, select the WAN port to configure, set the Addressing mode as 'DHCP', enable 'Retrieve default gateway' from the server and then select 'OK'.
To set up the ISP failover between two wan interfaces, an SD-WAN will be used.
To create the SD-WAN interface: Go to Network -> SD-WAN, under SD-WAN Zones, select Create New -> SD-WAN member.
Adding wan1 (Static): Select wan1 and select the zone as virtual-wan-link, set the default gateway as set when configuring the interface and select 'OK'.
Adding wan2 (DHCP): Select wan2 and select the zone as virtual-wan-link. Do not change the default gateway and select 'OK'.
To add the Default Static Route: Select the virtual-wan-link from the Interface, set the Destination as 0.0.0.0/0.0.0.0, and select 'OK'.
Verifying the routes in the route table: It is possible to verify the routes have been added using with the following command:
# get router info routing-table all
Creating an ISP failover: Go to Network -> SD-WAN -> Performance SLA, select 'Create New', set the Name as Link-Monitor, set Probe as Active, set Protocol as Ping, add 8.8.8.8 as the Server, enable Update static route and then, select 'OK'.
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