Targeted flow sampling
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United States of America Patent
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Jun 7, 2011
Grant Date -
N/A
app pub date -
Jan 29, 2008
filing date -
Jan 29, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A device may include two or more line interfaces. One of the line interfaces may include a component to buffer a packet that is received at the line interface, perform a lookup of information related to selecting a flow based on a header of the packet, apply a symmetric hash function to addresses in the header to obtain a hash when the information related to selecting the flow indicates the flow is to be selected based on a random method, compare the hash to a particular number using the information related to selecting the flow, the particular number being same for the line interfaces, sample a flow when the hash matches the particular number, create a flow record for the flow, and sample packets based on the flow record.
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