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Methods and apparatus for network congestion control

  • US 7,596,627 B2
  • Filed: 12/18/2001
  • Issued: 09/29/2009
  • Est. Priority Date: 12/18/2001
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a frame having a source identifier field corresponding to a source node and a destination identifier field corresponding to a destination node, the frame having been transmitted to a fibre channel network switch through a plurality of switches including a first intermediate switch between the network switch and the source node;

    characterizing traffic flow at the network switch, wherein characterizing traffic flow comprises determining an amount of congestion control needed in a fibre channel fabric, wherein if a moderate amount of congestion control is needed, a first instruction is generated and if a significant amount of congestion control is needed, a second instruction is generated; and

    wherein the first instruction, having a source identifier field corresponding to the destination node and a destination identifier field corresponding to the source node, reduces transmissions only at the first intermediate switch and the second instruction reduces transmissions at a plurality of switches including the first intermediate switch.

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