Your backbone in France.
As simple as ielo.
To ensure service availability, support growth, and guarantee resilience, you need a reliable fiber infrastructure designed to last.
Your core network is the engine of your business. To extend its reach, strengthen its robustness, or increase capacity, you need a fiber infrastructure that is robust, documented, and fully controlled end to end.
With 30,000+ km of network, ielo supports you in the design, expansion, and securing of your backbone, enabling you to absorb traffic growth and ensure operational continuity.
Looking to extend your core network?
To expand your footprint or connect new POPs, we provide high-performance optical services:
- Dark Fiber: connect your equipment using passive optical fiber pairs, ready to be lit, over controlled and fully known routes.
- Wavelengths up to 400 Gb/s: benefit from high-capacity wavelengths to extend your backbone or interconnect your critical infrastructure.
- E-Line (Lan-to-Lan): flexible, fully managed connections with built-in security.
- Interconnections where you need them: thanks to our presence in nearly all French data centers and our nationwide footprint, we enable links from anywhere to anywhere within our coverage area, whether between data centers or other sites… Where many providers limit themselves to data centers interconnections only. The strength of the ielo network? It enables all of this while remaining independent of the data centers.
Our goal: give you greater reach and more freedom in the design of your network.
Is backbone resilience a top priority for you?
We design architectures built to withstand disruptions and reduce outage risks:
- Physically diverse routes: Our 12,000 km long-haul network and 21,000 km metropolitan network allow us to to offer a wide range of diverse, alternative routes tailored to your requirements.
- Redundant transport: To ensure a high level of availability, we design multi-route architectures (protection or restoration), based on feasibility studies.
- Out-of-Band (OOB) access: To retain control even in the event of a major incident on third-party infrastructure, we can deploy an independent OOB access, fully isolated from your production traffic.
Our goal: support you in achieving the highest level of resilience
Looking to increase inter-site transport capacity?
Your critical environments — clusters, service platforms, cloud, sensitive IT systems — require optical links that can keep pace with growing demand.
Thanks to its next-generation, homogeneous, and adaptive network, ielo helps you absorb traffic growth without compromising performance.
- High-capacity wavelengths: Services calibrated for demanding use cases — data center interconnection, data replication, real-time synchronization.
- Flexible routes and bandwidth: We can easily evolve routes, capacities, and connection points at any time to align with the requirements of your network architecture.
Our goal: a scalable backbone capable of supporting your ambitions.
Our solutions
ielo optical building blocks that enable you to design a reliable, scalable, and truly resilient architecture.
Dark Fiber
The raw product: your own dedicated fiber pairs to build exactly the network you want.
Learn moreWavelengths
High-performance capacity: optical wavelengths engineered for your heaviest workloads.
Learn moreWhy choose our solutions
for your core network?
A robust nationwide network:
30,000+ km under control
12,000 km of long-haul backbone, 21,000 km of metropolitan network, and a dense presence in data centers: we operate an independent, end-to-end controlled, high-capacity infrastructure. Your core network is built on solid foundations, not on hidden dependencies.
In-house engineering that designs every route
Our in-house Engineering Office designs and documents your architectures: constraint analysis, route selection, outage risk assessment, and topologies tailored to your use cases. With ielo, you know exactly what your backbone is built on, and who designed it.
24/7 operations for your critical environments
Our NOC provides continuous monitoring, alarms, incidents, traffic, and optical measurements. With our SLAs, MTTR commitments, and clear reporting, you manage your service levels with full transparency. Your network is never left unattended.
Your questions, our answers… Simple, the ielo way!
A straightforward, technical FAQ to guide your architecture choices:
capacity, redundancy, dark fiber, wavelengths, and OOB.
What are the strengths of the ielo network?
Our next-generation backbone is independent of third-party networks. We use alternative routes, distinct from most providers in France. Above all, it is homogeneous, fully operated in-house, and runs through technical sites rather than conventional data centers.
This allows us to build tailored, high-performance, and resilient services.
When should you choose dark fiber instead of wavelengths?
Dark fiber is a raw infrastructure that you light yourself using your own equipment. Waves are portions of the optical spectrum provided and managed by ielo.
Wavelengths meet most requirements and are generally more cost-effective. You retain control over your network while we manage the optical layer of your infrastructure.
Dark fiber is ideal for very high-bandwidth needs or if you want to:
- fully control your architecture,
- use your own equipments
- minimize dependencies as much as possible
- deploy your own dedicated DWDM infrastructure
- scale capacity at your own pace.
The two options are raw products with fixed routes. In both cases, you subscribe to a specific route and ensure your resilience by taking as many paths as needed.
We can also offer variations: spectrum, alien wavelength, grey fiber…
Our pre-sales teams are available to explore the possibilities and provide you with expert guidance.
How do you manage resilience? What happens if an optical route goes down?
For infrastructure products as raw as dark fiber or waves, it is essential to have multiple routes. This way, if one path experiences a service interruption, your traffic is automatically rerouted over an unaffected route.
That’s why ielo supports you in your projects to define each path, ensuring the right level of resilience (100% physically diverse routes) while taking your constraints and budget into account.
Our pre-sales teams are available to explore the possibilities and provide you with expert guidance.
Can you guarantee constant bandwidth between our sites?
Yes, our transport services come with guaranteed bandwidth.
For dark fiber and waves, resources are physically dedicated end-to-end. For Ethernet services (E-line), our network is deliberately over-provisioned to prevent any risk of congestion.
How does your network anticipate growing usage and handle the associated traffic increases?
ielo is one of the few operators in France with its own long-haul network. This means we have near-unlimited capacity between cities, which we make available to you.
For its IP network, ielo leverages this advantage by activating surplus capacity and applying careful capacity planning, thereby avoiding congestion.
Is it possible to modify a route or bandwidth at a later stage?
Yes, no network architecture is set in stone. Routes, delivery points, and capacities can always be adjusted to match your architecture and future needs. Each case is assessed individually, and our teams are available to work with you on your projects.
Can you assist us in designing our network?
Yes. By supporting our operator clients on a daily basis for their backbone needs, we have solid experience in designing operator networks.
We always prefer to get involved early to propose global solutions that meet your requirements while optimizing costs.
We can assist you with your specifications: our in-house Engineering Office and pre-sales team can analyze your constraints, risks, and critical traffic flows, and propose a resilient architecture tailored to your needs, including routes, redundancy, topologies, and more.
How long does service delivery take?
It depends on the topology and routes. For existing routes with immediate availability, service activation can be fast, typically within a few weeks. For specific configurations and custom projects, an engineering study and construction work may be required.
A project, a constraint,
or an architecture
to explore?
Tell us about your core network.
We’ll take care of the rest.