In FMGR, you can configure SD-WAN in two Ways, per device OR Central-Mgmt
-- Per device,
-configure template and health check server for each device individually
-common Template and health check Server which can be assigned to multiple devices.(For enabling central-mgmt SD_WAN,go to system settings>> All ADOMs>> edit the ADOM >> Check SD-WAN)
- Interfaces can be configured with default mapping(name has to match with device interface) or per device mapping can be configured.
-- Pre-requisite for SD-WAN,
the WAN interfaces should not be referred in the policies
- If you have added FGT to FMGR via wan1/wan2 interface connection, then in all the WAN policies in PP, you need to replace WAN interface with 'sd-wan' interface.
- And then after configuring SD-WAN you can perform installation.
-If you get errors while installation regarding wan interfaces have references, then try to find the reference and delete it. If reference is for firewall policy, you can go to device manager >> double click the device >> CLi Configuration >> firewall Policy >> replace the WAN interfaces with 'virtual-wan-link'. And then try installing again.
Once the SD-WAN is enabled in the ADOM,
1) Create the Members interface, with the same name and the default interface that you have in the FGT (wan1, wan2, port5, etc).
If you have several FGT, you can directly do Mapping Per-Device.
2) Create SD_WAN Templates, with a name that refers to the SD-WAN of the FGT-X (to be clear on what FGt you use if you then have to add inetrfaces or modify something else), adding the interfaces you created earlier, SLA, and You need SD-WAN Rules too.
3) Assign the Template to the Device (FGT-X) that you need to configure the SD-WAN
Then you install the config in the FGT.
I hope you understand my English and the steps of config.
You do not modify the SD-WAN from the interfaces (networks interface), you do it from the SD-WAN option that you showed previously.
if from there it does not let you add interfaces, it is because you are using it in a policy, route, or object.
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