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Active - all uncleared alarms. Acknowledged alarms go to the bottom of this list.
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History - filtered to show only cleared alarms
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All - all uncleared and cleared alarms
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Alarms have one of four severity levels: Critical, Major, Minor, or Warning. Only Critical and Major alarms are service-affecting.
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Critical alarms require immediate attention, and reflect conditions that affect an appliance or the loss of a broad category of service.
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Major alarms reflect conditions which should be addressed in the next 24 hours -- for example, an unexpected traffic class error.
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Minor alarms can be addressed at your convenience -- for example, a degraded disk.
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Warnings inform you of conditions that may become problems over time -- for example, the network interface is admin down.
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On the Topology tab, appliances color-code how many of their severest alarms are open.
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