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High speed internetworking traffic scaler and shaper

  • US 6,052,375 A
  • Filed: 11/26/1997
  • Issued: 04/18/2000
  • Est. Priority Date: 11/26/1997
  • Status: Expired due to Fees
First Claim
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1. A traffic scaling and shaping apparatus for shaping the output traffic in a high speed computer network device, said apparatus comprising:

  • a timing mechanism for the scheduling of a plurality of logical queues, each logical queue having associated therewith valid data queues of at least one priority type;

    a parameter table for storing for each logical queue a plurality of parameter values used to control the shaping of output traffic;

    a traffic scaler mechanism for manipulating the traffic shaper parameter values for each of said logical queues;

    a traffic queue allocation manager for allocating each said valid data queue for each said logical queue to a different one of output ports;

    a plurality of queue priority arbiters associated with each output port for performing internal arbitration of each valid data queue allocated to it, said internal arbitration resulting in a plurality of priority-based queues for said each output port;

    a plurality of port priority arbiters, each port priority arbiter corresponding to a separate priority type, for selecting a valid queue for each priority type; and

    a bus DMA arbiter for selecting a final queue to be processed from said selected valid queues of each priority type.

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