Who’s Pushing Layer-2 VPN Services?
Here’s another great point Tiziano Tofoni raised in his comment to my EVPN in small data center fabrics blog post:
I cannot understand the usefulness of L2 services. I think that the preference for L2 services has its origin in the enterprise world (pushed by well known $vendors) while ISPs tend to work at Layer 3 (L3) only, even if they are urged to offer L2 services by their customers.
Some (but not all) ISPs are really good at offering IP transport services with fixed endpoints. Some Service Providers are good at offering per-tenant IP routing services required by MPLS/VPN, but unfortunately many of them simply don’t have the skills needed to integrate with enterprise routing environments.
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