Video network design: traffic, PoE and failure domains
Size links and power independently, then test their shared dependencies.
Updated
Principle and limits
Map camera-to-recorder, client, management and integration traffic. Use segmentation and permitted flows appropriate to the site. Check switch port capability, total PoE budget, cable loss and the device’s maximum operating demand. Consumption can change with IR, heaters and PTZ movement; a daytime idle reading is not the power design maximum.
Installation and acceptance
Test peak video and night power conditions together. Inspect uplink utilization, errors and packet loss, then test an approved switch or power interruption. Record which cameras fail together and how recordings recover. Confirm time synchronization and restrict management paths; available bandwidth does not establish adequate access control.