Performance Baseline
A recorded measure of normal network performance used to detect deviations later.
A performance baseline is a documented snapshot of normal network behavior captured over a representative period, recording metrics such as bandwidth utilization, latency, error rates, device CPU load, and packet loss. It is the reference point against which future measurements are judged; without it, alert thresholds and anomaly detection have no empirical foundation. On the N10-009 exam, distinguish a baseline from a threshold: a threshold is a single trigger value, while a baseline is the full picture of normal over time. Re-establish baselines periodically as networks change.
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