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Packet routing with payload analysis, encapsulation and service module vectoring

  • US 20070258449A1
  • Filed: 05/05/2006
  • Published: 11/08/2007
  • Est. Priority Date: 05/05/2006
  • Status: Active Grant
First Claim
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1. A packet switching exchange that receives a plurality of packets, each of the plurality of packets having payload content, the packet switching exchange comprising:

  • a plurality of switches;

    a first line card, communicatively coupled to the plurality of switches, comprising a first network interface and first line card processing circuitry;

    a second line card, communicatively coupled to the plurality of switches, comprising a second network interface and second line card processing circuitry;

    primary processing circuitry communicatively coupled to the plurality of switches;

    the first line card compares the payload content of each of the plurality of packets to a plurality of predefined trigger templates, and, in response to the comparison of a first packet of the plurality of packets with a first trigger template of the plurality of predefined trigger templates, the first line card delivers the first packet and supplemental information to the primary processing circuitry; and

    the primary processing circuitry responds to the delivery by comparing a predefined supplemental template to the first packet and, based on the comparison, delivers the first packet to a first of a plurality of service modules for processing.

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