There’s probably a dozen ways to do this, and a couple times that with regard to devices. 

What I’m doing at home is a plain old Cisco router from my old lab with a couple 4G Cradlepoint modems.  I load share across all paths (1 x DSL, & 2 x att 4G).  

Unless you have a requirement to backhaul the backup path over the 4G, then I would avoid doing that for performance reasons. 



On Sun, Jul 12, 2020 at 8:39 AM Baldur Norddahl <baldur.norddahl@gmail.com> wrote:
Hello

I am looking for a CPE product that can use the 4G and soon 5G cell network as backup to our fiber. The product should create a VPN back to our network, so the customer can keep his IPv4/IPv6 address and all other services running as normal except maybe at a lower speed.

I imagine this CPE router could use BGP to announce itself through both the fiber and the cell backup.

Are somebody doing this and what can you recommend?

Thanks

Baldur