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Data link interface for packet-switched network

  • US 5,781,532 A
  • Filed: 08/02/1996
  • Issued: 07/14/1998
  • Est. Priority Date: 12/23/1993
  • Status: Expired due to Term
First Claim
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1. A data link interface for sending and receiving data over a virtual connection on a common link in a packet-switched network, comprising means for detecting congestion in the network, means for enqueing packets for transmission over said virtual connection, means for adjusting the transmission rate in response to the detection of said congestion so as to reduce congestion in the network, means for sorting traffic by conversation between two endpoints and re-ordering packets from different conversations on said common link while maintaining the order of transmission for each conversation in order to achieve fair allocation of bandwidth among different conversations when the detected congestion exceeds a predetermined mild congestion threshold, and means for dropping packets when the detected congestion exceeds a predetermined severe congestion threshold.

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