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Network switch with dynamic backpressure per port

  • US 6,201,789 B1
  • Filed: 12/30/1996
  • Issued: 03/13/2001
  • Est. Priority Date: 12/30/1996
  • Status: Expired due to Term
First Claim
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1. A network switch, comprising:

  • a plurality of network ports that send and receive data packets, each of said plurality of network ports including core logic that receives a backpressure indication and that transmits a jamming sequence to terminate data packet transmission;

    a memory that temporarily stores data packets received from any of said plurality of network ports; and

    a switch manager coupled to said memory and said plurality of network ports that determines at least one threshold condition of said memory, that determines if a new data packet being received by one of said plurality of network ports is to be stored in said memory for transmission by another of said plurality of network ports, and if so, that provides said backpressure indication to said one of said plurality of network ports to terminate said new data packet if said at least one threshold condition would be violated by storage of said new data packet.

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