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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.

What is Dedicated Internet Access (DIA) and Why Your Business Needs It

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

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