Flow statistics
Flow statistics are reported in the following sections of the Administration > System Information page:
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Flow Capacity Stats
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Flow Capacity History
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Flow Capacity Usage
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Raw Flows Processed/Over Limit
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Reduction of Raw Flows from Deduplication
Flow Capacity Stats
The Flow Capacity Stats section summarizes the flow statistics based on the latest data. "Raw flows" are flows reported by switches and routers that are sending flow data to the NetProfiler appliance. The appliance saves the IP address of the reporting device and information the device reports about the flow for use in topology reports and deduplicates the flow records so that flows are not counted more than once.
The "Current deduplicated flow rate" is the number of flows that were reported during the most recent minute. Each flow is counted only once, regardless of how many different network devices reported it. These are also reported as a percent of licensed capacity and as a percent of total raw flows.
Flow Capacity History
The Flow Capacity History section reports the average, peak and minimum flow rates for raw and deduplicated flow data for the last day and the last week. It also reports over limit statistics. Flow data that exceeds the licensed limit for the minute during which it is received is not processed.
Flow Capacity Usage
The Flow Capacity Usage section shows how much of the licensed flow capacity is being used. When the number of deduplicated flows approaches the license limit, the licensed limit is shown as a dashed line on the graph.
If the number of deduplicated flows in a 1-minute period exceeds the license limit, flows that are over the limit are not processed. The graph shows the number of deduplicated flows that exceeded the licensed limit.
Raw Flows Processed/Over Limit
The Raw Flows Processed/Over Limit section displays the number of flows per minute that have been processed. Processing includes collecting and storing topology information and deduplicating flow data. For example, assume that a router sends a flow record to Flow Gateway. The appliance checks to see if the flow was already reported by another device. If it was, then the appliance adds the topology information from this flow record to the record it already has for the flow.
If the flow was not reported before, the appliance checks to see if adding it would exceed the license limit for deduplicated flow records. If recording the flow would exceed the license limit, the appliance drops the flow record.
Reduction of Raw Flows from Deduplication
The Reduction of Raw Flows from Deduplication section displays the percentage by which the number of raw flows was reduced by deduplication.