Executive Summary: Dark Fiber Interconnect Migration
Client Challenge
An enterprise client relied on 10 individual leased 10G managed circuits between two primary data centers (Location A and Location Z). Scaling bandwidth linearly increased recurring monthly costs and limited network control.
The Solution
The client migrated from carrier-managed circuits to a private Dark Fiber pair lit by high-performance Adtran optical transport equipment. Using Dense Wavelength Division Multiplexing (DWDM), all 10x10G connections were aggregated onto a single fiber pair.
Key Outcomes & Results
>50% Cost Reduction: Replaced 10 expensive circuit leases with a single fixed fiber lease and owned Adtran hardware.
Instant Scalability: Unlocked the capacity to add 10G/100G channels on demand without increasing monthly recurring costs.
Superior Performance: Removed carrier intermediate nodes, resulting in lower, deterministic latency between data center sites.
+------------------+ Adtran DWDM Gear +------------------+
| Data Center A | ================================= | Data Center Z |
| 10x 10G Handoffs | Single Dark Fiber Pair | 10x 10G Handoffs |
+------------------+ (Multi-Channel WDM) +------------------+
Conclusion
By taking ownership of the optical layer using Adtran gear and dark fiber, the client eliminated carrier friction, slashed operational expenditure by over half, and built a future-proof data center interconnect architecture.