June 2010
Intermediate to advanced
224 pages
5h 18m
English
Content preview from Network Flow AnalysisBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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FlowTracker
FlowTracker generates RRD-based graphs of flow data on an ongoing basis, much like FlowScan and CUFlow. Each graph you create is called a tracker. One tracker graphs either inbound or outbound traffic, but not both. FlowTracker is much more flexible than FlowScan, but that flexibility also makes it unsuitable for customers or management to access directly.
FlowTracker Processes
Like FlowScan, FlowTracker creates RRD files from flow-capture files as they're created. Rather than moving flow files, however, FlowTracker uses two processes to watch the flow-capture directories for changes and to read each new flow file as it's closed. If these processes stop, FlowTracker will not update RRDs for new flows or create new graphs.
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