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Monitoring packet flows

  • US 7,564,791 B2
  • Filed: 12/29/2003
  • Issued: 07/21/2009
  • Est. Priority Date: 12/29/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a plurality of packets at a plurality of first locations in a first stacked switching device operatively coupled to a second stacked switching device, each packet identifying a corresponding destination location where each packet is to be delivered, each stacked switching device including a plurality of switching devices stacked on top of each other;

    queuing the received plurality of packets in at least one queue;

    receiving a message on the first stacked switching device from the second stacked switching device, the message identifying a congested second location in the second stacked switching device, the message transmitted by the second stacked switching device upon a determination that the second location is congested;

    determining that a destination location of a first packet of the received plurality of packets is the congested second location; and

    holding the first packet in the at least one queue.

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