Insights from the OT Trenches: Why SDN Beats VLANs on the Plant Floor

July 25, 2025

Software-defined networking (SDN) is transforming how industrial networks are secured and managed. Traditional segmentation methods—like zones and conduits defined in IEC/ISA 62443—often depend on VLANs, which can be complex and unreliable in OT environments.

This Insights from the OT Trenches installment explores how SDN simplifies network management through micro-segmentation, eliminates VLAN headaches, and prevents issues like network loops. For OT teams, it means fewer headaches—and more control.

 

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