Regional ISP Boosts Network Resiliency with 400G Wavelengths
| Label | Detail | Value Proposition |
| Client Type | Regional Internet Service Provider (ISP) | Wholesale Capacity & Carrier Backhaul |
| Core Challenge | Congestion on aging 100G backbone link and a Single Point of Failure (SPOF) for core traffic. | Service Degradation & High Risk of Downtime |
| Solution Deployed | Dual-Route Wholesale 400G Wavelength Services (Diverse Paths) | Resilient, Managed Capacity Upgrade |
| Technical Key | Primary and secondary circuits ran on Physically Separate Routes, providing A/Z diversity. | True Carrier-Grade Redundancy |
| Measurable Result | Fourfold Capacity Increase resolved all peak-hour congestion, achieving 99.999% Uptime capability. | Improved QoS and ability to onboard new business clients |
Client Profile and Critical Challenge
This client is a rapidly expanding regional Internet Service Provider (ISP) serving commercial and residential subscribers across three major metropolitan areas. Their core challenge was two-fold: Capacity Congestion and Network Vulnerability. Their existing core backbone link between two crucial Points-of-Presence (PoPs) was an aging 100G circuit, frequently experiencing over-utilization and congestion during evening peak hours, leading to subscriber complaints and service degradation. Furthermore, this 100G circuit was on the only available fiber path, creating a single point of failure (SPOF) for their entire network. They urgently needed to upgrade capacity to 400G and implement a diverse, redundant route to protect their core traffic from catastrophic fiber cuts. The team, however, lacked the internal expertise and budget for a costly DWDM equipment purchase.
The Solution: Dual-Route 400G Wholesale Wavelength Services
We partnered with the ISP to deploy a comprehensive Wholesale Wavelength Solution using the latest 400G coherent optics under an OPEX model.
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Primary 400G Upgrade: First, we replaced their congested 100G link with a single, dedicated 400G Wavelength Service. This instantly provided a fourfold capacity increase, resolving all congestion issues and providing ample headroom for years of subscriber growth. We handled the full DWDM setup and handed off a clean 400G Ethernet interface.
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Diverse Route Protection: Next, the core component of the solution was the installation of a secondary 400G Wavelength circuit provisioned along a physically separate, geographically diverse path. This ensured that in the event of any failure on the primary route (dig-up, fire, flood), traffic would automatically switch to the backup path via the ISP’s own routing configuration, guaranteeing service continuity.
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Wholesale OPEX Model: Importantly, the ISP avoided the huge capital expenditure of purchasing two sets of 400G optical transport equipment and amplifiers. The service was delivered under a simple, predictable monthly lease (OPEX), dramatically improving their balance sheet.
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Fast Deployment: Finally, because the service was delivered over our existing fiber assets, provisioning and turn-up took only weeks, compared to the 9-12 months required for a fiber construction or equipment procurement cycle.
The Business Impact and Key Results
The dual-route 400G deployment provided immediate and lasting network improvements:
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Eliminated Congestion: Peak-hour utilization dropped dramatically, leading to improved Quality of Service (QoS) and fewer customer support calls.
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True Carrier-Grade Resiliency: The ISP achieved 99.999% network uptime capability by eliminating the single point of failure, satisfying their enterprise Service Level Agreements (SLAs).
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Predictable Cost: The OPEX model allowed the ISP’s finance team to budget network upgrades predictably without major annual capital spikes.
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Focus on Core Business: By outsourcing the optical layer management to us, the ISP’s small engineering team could focus on their core business: subscriber management and local access network upgrades.
FAQs
What is the difference between a "Wavelength Service" and a "Dark Fiber Lease"?
Simply put, Wavelength Service is a “Lit” service. Therefore, we provide the fiber, the equipment (lasers, DWDM gear), and all the 24/7 management. You just plug your router into our hand-off and get instant capacity (10G to 800G).
Conversely, a Dark Fiber Lease is an “Unlit” service. Crucially, we only provide the bare fiber optic cable. You bring all of your own optical equipment, manage it, and handle future upgrades. In short, Wavelengths are for immediate capacity; Dark Fiber is for ultimate control.
Is a Wavelength Service secure? Is my traffic shared?
Yes, our Wavelength Services are inherently secure. Because they are a Layer 1 connection, your traffic is delivered as a dedicated color of light across our network. Consequently, it is physically isolated from all other customer data, including the public internet. This provides a Private Fiber Connection that meets strict enterprise and financial security standards.
What level of latency can I expect on a Wavelength Service?
Our advantage is ultra-low, guaranteed latency. First, as a Layer 1 service, we bypass all slow routing and processing layers. Moreover, for critical routes (like financial corridors), we can provide a Guaranteed Latency Service Level Agreement (SLA). Therefore, the latency is predictable and minimal, making our circuits ideal for synchronous data replication and high-frequency trading.
Can I upgrade my Wavelength speed (e.g., from 100G to 400G) without replacing the fiber?
Yes, absolutely. Because our services are based on DWDM technology, we use a single fiber pair to carry many individual channels (wavelengths). Therefore, upgrading your service (e.g., moving from a 100G circuit to a 400G circuit) often requires only swapping out the optical equipment on our end, not physically replacing the Scalable Wavelength Capacity in the ground. This makes upgrades fast and non-disruptive.
Do you offer Wavelength Services for both metropolitan (metro) and long-haul routes?
Yes, we offer complete geographic coverage. Specifically, our Metro Wavelength Service connects data centers and offices within a single city (e.g., Dallas DCI). Conversely, our Long-Haul Optical Transport connects distant cities (e.g., New York to Chicago). In both cases, you receive the same level of dedicated capacity and managed reliability.
Ready to Discuss Your High-Capacity Network Requirements?
Don’t let bandwidth limitations slow your business. Our network engineers are ready to design a custom DWDM solution tailored to your specific endpoints and capacity needs (from 100G up to 800G).