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2026-08-266 min
What is Dedicated Internet Access (DIA) and Why Your Business Needs It
A technical deep-dive into Dedicated Internet Access vs. broadband, covering contention ratios, symmetric performance, and why enterprises require non-shared, SLA-backed fiber backbones.

Defining Dedicated Internet Access (DIA) Unlike standard commercial broadband which relies on contention ratios, Dedicated Internet Access (DIA) provides a private, symmetrical pipe from our 53,100+ km fiber backbone directly to your premises. This connection is not shared with residential neighbors, ensuring consistent performance during peak traffic hours. ### Technical Architecture At Smartnett, we utilize a dedicated last-mile path with fixed IP assignments, optimized for BGP routing. By maintaining a 400 Gbps core capacity, we eliminate packet loss and jitter common in oversubscribed ISP networks. Our infrastructure is managed under ITIL v4 frameworks to ensure maximum uptime. ### Comparison Table: DIA vs. Business Broadband | Feature | Dedicated Internet Access | Business Broadband | | :--- | :--- | :--- | | Bandwidth | Symmetrical (e.g., 1Gbps/1Gbps) | Asymmetrical (e.g., 1Gbps/50Mbps) | | Contention Ratio | 1:1 (Non-shared) | 20:1 to 50:1 (Shared) | | SLA Guarantee | 99.999% Uptime | Best Effort | | Latency | Minimal/Constant | Variable | ### Business Use Cases DIA is the foundation for: - VoIP and Unified Communications (UCaaS) - SD-WAN underlay for multi-site enterprise - Secure access to public/private cloud environments - Real-time data synchronization between global offices
RM
Written by
Eng. Roberto Mendoza Carrillo
Network Engineering — Smartnett
Telecommunications Engineer (UPIICSA-IPN). 12 years designing SD-WAN architectures and dedicated links for corporate clients in Mexico. Cisco CCNP and MikroTik MTCRE certified.
Technical review: Smartnett Telecom NOC
Last review: August 2026


