DMVPN Dual Hub Dual Cloud - 2 SPs?

[ChrisNewnham_]

Hello

I know it is possible to configure Dual Hub Dual Cloud with 1 underlay - is it explicitly mentioned anywhere that you should use a different SP (underlay) for the second cloud? I know that logically it is better to do so - just wondered if that is explicitly mentioned somewhere as a requirement.

Thanks!

[MHM Cisco World]

https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2020/pdf/BRKSEC-3629.pdf

theoretical you can do that but if the link to ISP is down both Hub will down.
BUT you can use dual hub to get high availability of Hub one down other can server the Spoke.
MHM  

[Georg Pauwen]

Hello,

it is also a matter of cost. Two clouds/two different ISPs cost you double. Depending on where you are, and how reliable your ISPs are, to me, the only 'dual could' that would really make sense is one where one cloud uses a terrestrial link, and the other a wireless link.