Method and apparatus for generating a network topology representation based on inspection of application messages at a network device
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United States of America Patent
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Aug 9, 2011
Grant Date -
Jun 8, 2006
app pub date -
Mar 24, 2005
filing date -
Dec 6, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method is disclosed for generating a network topology representation based on inspection of application messages at a network device. According to one aspect, a network device receives a request packet, routes the packet to the destination, and extracts and stores correlation information from a copy of the request packet. When the network device receives a response packet, it examines the contents of a copy of the response packet using context-based correlation rules and matches the response packet with the appropriate stored request packet correlation information. It analyzes recorded correlation information to determine application-to-application mapping and calculate application response times. Another embodiment inserts custom headers that contain information used to match a response packet with a request packet into request packets.
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