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Delayed-start method for minimizing internal switch congestion

  • US 7,911,960 B1
  • Filed: 08/13/1999
  • Issued: 03/22/2011
  • Est. Priority Date: 08/13/1999
  • Status: Expired due to Fees
First Claim
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1. A data flow control method within a data switch having a plurality of input sections each including a respective input buffer from which that input section transmits data to an output section through a switching fabric, said data flow control method comprising the steps of:

  • defining a plurality of occupancy levels, including a high level and a low level, each uniquely corresponding to a range of input buffer occupancy values;

    pausing data transmission from said plurality of input sections to said output section in response to a detection of congestion within said switching fabric or within said output section;

    determining input buffer occupancy of the input buffer of each of said plurality of input sections during said pause;

    computing a delay interval based upon said input buffer occupancy; and

    delaying restart of data transmission from said plurality of input sections to said output section in accordance with said computed delay interval.

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