Packet switching system arranged for congestion control

  • US 4,769,811 A
  • Filed: 12/31/1986
  • Issued: 09/06/1988
  • Est. Priority Date: 12/31/1986
  • Status: Expired due to Term
First Claim
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1. A method for dropping a marked data packet to be transmitted from a switch node in a packet switching network, the method comprising the steps of:

  • a. preparing to transmit the data packet;

    b. determining whether or not the data packet is marked;

    c. evaluating congestion at the output of the switch node;

    d. determining whether or not the congestion is at a predetermined value; and

    e. if the data packet is marked and the congestion is at the predetermined value, dropping the data packet before it is transmitted.

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