Enhanced flow entry table cache replacement in a software-defined networking switch
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United States of America Patent
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Oct 13, 2015
Grant Date -
Dec 18, 2014
app pub date -
Jun 17, 2013
filing date -
Jun 17, 2013
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Abstract
In a network switch of a software-defined network (SDN) architecture, a method for improving cache replacement (CR) efficiency implemented therein, the method comprising maintaining a flow table comprising a plurality of flow entries, computing a replacement index (RI) value for each of the plurality of flow entries resulting in a plurality of RI values, wherein computing an RI value for a flow entry is at least partially based on latency sensitivity of a forwarding path specified by the flow entry, and generating, based on at least some of the computed RI values, an eviction list comprising a number of list entries, wherein each of the list entries points to one of at least a fraction of the flow entries.
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