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Apparatus and method for controlling congestion in a communication network

  • US 9,319,334 B2
  • Filed: 03/26/2013
  • Issued: 04/19/2016
  • Est. Priority Date: 05/28/2012
  • Status: Active Grant
First Claim
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1. A method for controlling congestion in a communication network, the method being performed by a node in the communication network, the method comprising:

  • providing a table that associates each of a plurality of ports provided for the node with at least one address assigned to at least one of a plurality of transmission source devices that are coupled to the node via the communication network;

    detecting first congestion in the communication network, based on frames that are received via the plurality of ports and stored in a frame buffer provided for the node;

    determining one or more first ports that receive frames causing the detected first congestion, based on a current traffic volume of each of the plurality of ports;

    determining, regardless of source addresses included in the received frames, a first transmission source device whose address is associated with the each first port in the table as a transmission source device causing the detected first congestion;

    setting a first address assigned to the first transmission source device as a destination address of a congestion notification message for giving notice of the detected first congestion; and

    transmitting, via each of the determined one or more first ports, the congestion notification message whose destination address is the first address, to the first transmission source device.

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