IIoT, SCADA & Edge Connectivity worked example

Industrial Network Bandwidth at 110% link uptime: a worked example

Push link uptime up to 110% and the picture changes. This example computes every intermediate figure at that operating point. Use it when an OT network engineer is sizing whether a 100 Mbps or 1 Gbps switch ring can carry the planned PROFINET, EtherNet/IP, MQTT, and management traffic without saturation.

The inputs for this scenario

  • Raw link speed: 1,000 Mbps (unchanged)
  • Planned operating share of the link: 1 fraction (unchanged)
  • Link uptime: 110 % (raised for this scenario; the documented default is 99.9)
  • Bandwidth left after protocol and management overhead: 50 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross network bandwidth = raw link speed × planned operating share) to the inputs above produces each figure below.
  • At this operating point the engine returns 550 Mbps for usable network bandwidth, the number this scenario is built around.
  • At this operating point the engine returns 1,000 Mbps for gross network bandwidth.
  • At this operating point the engine returns -100 Mbps for link downtime loss.
  • At this operating point the engine returns 550 Mbps for protocol and management overhead loss.

How this compares with the baseline

  • Against the tool's baseline example, where link uptime sits at 99.9% and the headline result is 500 Mbps, this scenario comes in 10.11% above the baseline at 550 Mbps.
  • It computes usable network bandwidth by trimming the raw link speed for the planned operating share, link uptime and the share remaining after protocol and management overhead. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Usable network bandwidth: 550 Mbps (headline result)
  • Gross network bandwidth: 1,000 Mbps
  • Link downtime loss: -100 Mbps
  • Protocol and management overhead loss: 550 Mbps

Run it with your numbers

  • Every input above is editable in the live Industrial Network Bandwidth calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.