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Waloo5
Explorer III
November 16, 2025
Question

fully-meshed VPN with Provisioning templates on FortiManager for FortiGates with multiple ISP lines

  • November 16, 2025
  • 4 replies
  • 575 views

Hello Community,

how to create a fully-meshed VPN with Provisioning templates on FortiManager for FortiGates  with multiple ISP lines and 2 HUBs and multiples Spokes

my architecture is like :

HUB1 ==> 4 ISPs

HUB2==> 4 ISPs

10 Spoke ==> 2 ISPs

my gol is to have in the spoke full mesh to HUBs ( 8 tunnels VPN IPSec  to HUB1 and 8 tunnels to HUB2)

 

4 replies

farhanahmed
Staff
Staff
November 17, 2025
Waloo5
Waloo5Author
Explorer III
November 17, 2025

Hello, 

Thank you for reply. My question is to know if we can do it in Provisioning templates not in vpn manager.

farhanahmed
Staff
Staff
November 17, 2025

O I see.

 

I believe there is no restriction, you should be able to do it but would require some manual work.


I could not find any specific doc for this setup.

But, have separate IPSec templates for HUB1, HUB2 and one template SPOKES.

Use metavariables for interfaces/subnets and create multiple tunnels to each site.

If you want ADVPN, then on Spoke template enable the autodiscovery receive and for Hubs autodiscovery sender.

www.farhan.ch
Waloo5
Waloo5Author
Explorer III
November 18, 2025

Hello, 

I found a solution to do this, but I'm not sure if it's the recommended approach from Fortinet.

In my SD-WAN Overlay setup, under the 'SD-WAN Overlay Template - Network Configuration (3/5)' section, I added multiple WAN Underlays for the Branch.

sdwan.png

 

In this example, I have 3 ISPs for Hub 1, 3 ISPs for Hub 2, and 2 ISPs for Spokes.

I hope this can help someone who is searching for a solution to this setup. I would also appreciate it if someone has a recommended solution to share it.

Best regards

 

 
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