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Wireless & Mobility · Intermediate

Channel Utilization

The percentage of time a channel is busy, measured by an AP's radio.

Definition

Channel utilization includes Wi-Fi transmissions from all BSSs and non-Wi-Fi energy. High utilization (above about 50-70 percent) leads to contention, latency, and poor throughput. It is a key RRM and dashboard metric.

Exam tip

High utilization with low client throughput suggests CCI or low data rates.

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