Threshold Crossing Alerts (TCAs) are pre-emptive, user-configurable alarms triggered when specific thresholds are crossed.
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They alarm on both rising and falling threshold crossing events (i.e., floor and ceiling levels). For both levels, one value raises the alarm, while another value clears it.
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Appliance Capacity - triggers when an appliance reaches 95% of its total flow capacity. It is not configurable and can only be cleared by an operator.
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File-system utilization - percent of non-Network Memory disk space filled by the appliance. This TCA cannot be disabled.
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Tunnel latency - measured in milliseconds, the maximum latency of a one-second sample within a 60-second span
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LAN-side receive throughput - based on a one-minute average, the LAN-side receive TOTAL for all interfaces
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WAN-side transmit throughput - based on a one-minute average, the WAN-side transmit TOTAL for all interfaces
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