Method and apparatus for determining bandwidth-consuming frame flows in a network
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United States of America Patent
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Jun 9, 2015
Grant Date -
Feb 6, 2014
app pub date -
Oct 11, 2013
filing date -
Jul 25, 2007
priority date (Note) -
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Abstract
A port monitor monitors network traffic that passes through a port of a switch. Frame flows routed through the switch are counted by hardware frame counting logic, which includes a content-addressable memory (CAM) and counters corresponding to various frame flows. Port monitor software includes logical containers (“buckets”), which are used to record and sort counts of the frame flows from hardware based on activity of the frame flows. Frame flow sorting is based on confidence building algorithms such that the thrashing of frame flows between buckets is reduced. Storage and sorting of the frame flows in software allows the activity level of any number of frame flows associated with the switch to be counted, regardless of hardware limitations on how many frame flows can be counted. This allows a real-time analysis of frame flows and a determination of frame flows that are major users of Fiber Channel bandwidth.
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