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Method and system for providing optimal discard fraction

  • US 6,724,776 B1
  • Filed: 11/23/1999
  • Issued: 04/20/2004
  • Est. Priority Date: 11/23/1999
  • Status: Expired due to Term
First Claim
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1. A method for controlling a flow of a plurality of packets in a computer network including a queue having a maximum queue level that is possible, the method comprising the steps of:

  • (a) determining a queue level for the queue;

    (b) determining an offered rate of the plurality of packets to the queue;

    (c) determining a virtual maximum queue level based on the queue level and the maximum queue level;

    wherein the virtual maximum queue level determining step further includes the steps of;

    (c1) increasing the virtual maximum queue level to a maximum that is less than or equal to the maximum queue level if the queue level is above a first threshold; and

    (c2) decreasing the virtual maximum queue level if the queue level is below a second threshold; and

    (d) controlling a transmission fraction of the plurality of packets to the queue, based on the queue level, the offered rate and the virtual maximum queue level.

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