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APPLICATION-AWARE M:N HOT REDUNDANCY FOR DPI-BASED APPLICATION ENGINES

  • US 20100057940A1
  • Filed: 08/28/2008
  • Published: 03/04/2010
  • Est. Priority Date: 08/28/2008
  • Status: Active Grant
First Claim
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1. A packet processing system for providing application-aware hot redundancy, the system comprising:

  • a plurality of active devices, each of the plurality of active devices comprising.;

    a processor configured to perform deep packet inspection to identify an application associated with an active flow, anda redundancy block configured to determine whether the application requires hot redundancy and, if so, to forward a message from which state information may be derived; and

    at least one protecting device providing redundancy for the plurality of active devices, wherein the protecting device is in communication with each of the active devices and is configured to;

    receive the message regarding the active flow from a respective active device of the plurality of active devices,derive state information from the message, andresume packet forwarding operations for the active flow using the state information upon failure of the respective active device.

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