Meraki generally, and MX specifically for this, are pretty agnostic towards the underlying network over which they communicate. The key questions to ask are: How can my Meraki devices connect to the network? In most cases we're generally talking RJ-45 ethernet, though other form factors, such as ethernet over fibre could well be applicable, for more powerful MX models. How is your VPLS presented? Will my underlying network carry IP traffic? (VPLS is, I think, agnostic as to the layer-3 you use; you probably wouldn't, but you could, theoretically use IPX over it too!?) Can my Meraki devices access the Internet over it? Meraki is a cloud service, you need to be able to reach all the necessary cloud resources. For VPLS that would probably mean - does one or more of my sites have an Internet break-out and how do I ensure my meraki devices can reach it? That probably means some routing between your VPLS termination and a perimeter firewall (which will need the right rules). 'Internet' also includes access to public DNS, to resolve Meraki domains and similar. Hope this helps
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