SD-WAN SETUP WITH DUAL ISP

[Prince]

Good day!

Newbie here and I was not around during the configuration of our Meraki devices as the contractor had it preconfigured for us.

We had a total of 3 offices on which we use SD-WAN to connect from each other.  Office 1 is MX84 and Office 2 & 3 are MX64. Recently, we added secondary ISPs on all our offices. However, if the primary ISP of office 1 was down, it cannot connect to office 2 and 3, same goes with other offices.  All our primary ISPs had public IPs, however, our 2nd ISPs (Starlink) don't have since it is a residential plan and these changes from time to time.

Is there a way to connect our offices when a primary ISP went down even without those public IPs of our secondary ISP?  And what would be the configuration/setup for this.

Thanks in advance.

[alemabrahao]

This is automatic, so there is a high chance that it is a problem with Starlink.

[alemabrahao]

It's very simple even without a public IP.

https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/MX_Load_Balancing_and_Flow_Preferen...

[PhilipDAth]

What was the specific test you performed?  Unlugging the primary ISP from the head office?

That should failover and work.  Especially if all of the sites have a public IP directly on the primary WAN interface of the MX.

[Amin_Costa]

There's something that might be happening. Probably the VPN between the meraki is configured as "Non-meraki VPN peers". I'm not sure but this might be the case as by default meraki use both links.

Check how the VPN is configured:

Security & SD-WAN -> Site-to-Site VPN -> Non-meraki VPN peers