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Method and apparatus to minimize congestion in a packet switched network

  • US 6,970,424 B2
  • Filed: 11/10/1998
  • Issued: 11/29/2005
  • Est. Priority Date: 11/10/1998
  • Status: Expired due to Term
First Claim
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1. A method for controlling congestion in a network having a plurality of switching points, comprising:

  • maintaining a plurality of service level agreements (SLAs) at a first switching point, each SLA having a corresponding minimum data rate;

    transmitting data packets received at the first switching point corresponding to each SLA at or above the minimum data rate in accordance with the respective SLA;

    receiving a message from a second switching point at the first switching point to indicate that traffic between a source and a destination is congested; and

    adjusting a data rate at which packets corresponding to an SLA, destined for the destination, are output from the first switching point in response to receiving the message to reduce the congestion.

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