Next-Gen 400G ZR+ DWDM Backbone (Amsterdam ↔ Frankfurt)

As infrastructure expands across multiple sites, transport stops being a simple matter of connectivity. It becomes part of the architecture itself: you need to add capacity, connect new locations, and support changing traffic patterns without constantly redesigning the network.

That was exactly the challenge we wanted to solve when building our new backbone.

MIRhosting has launched a next-generation DWDM backbone based on 400G Coherent ZR+ optics, connecting key locations in Frankfurt and Amsterdam. The goal is straightforward: provide a transport layer that can grow with demand while remaining operationally clean and technically consistent.

At the core of the platform is a high-capacity switching system with 32×400G capability, designed for long-distance, high-bandwidth links over 400G Coherent ZR+ optics. In addition to shared transport, we also introduced dedicated wavelength services for customers who need a fully isolated optical channel for enterprise workloads or specific traffic separation requirements.

What makes this important is not just raw bandwidth, but the way the network can evolve over time. Capacity can be added in clear, predictable steps. New routes and new traffic patterns can be introduced without turning the transport layer into a collection of one-off solutions. In practice, that means the network remains easier to scale, easier to operate, and easier to maintain as the infrastructure grows.

A more typical scenario would be a company with infrastructure concentrated in Amsterdam that needs to extend services toward Frankfurt for redundancy, customer proximity, or access to specific interconnection ecosystems. Without a structured backbone, this often results in a growing mix of separate circuits and temporary solutions. With a 400G-based DWDM backbone, expansion can follow a consistent transport model instead of turning into a series of one-off redesigns.

The backbone is built around major interconnection points and partner data centers mentioned in our launch materials, including Nikhef, Equinix AM5, Equinix FR5, nLighten, NorthC, and Serverius.

The platform is intended for several common scenarios:

• high-capacity transport between hubs at 100G and 400G,
• multi-site architectures that require stable regional connectivity,
• dedicated wavelengths for enterprise traffic isolation.

If you are planning 100G/400G connectivity or looking at a wavelength-based setup, we can help design a topology that matches both your current requirements and your expected growth over the next 6 to 12 months. To prepare a proposal, we usually need to know your endpoints, expected traffic growth, and whether you need L2 transport, IP transit, or dedicated optical capacity.