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CONGESTION-AWARE LOAD BALANCING IN DATA CENTER NETWORKS

  • US 20170295101A1
  • Filed: 04/11/2017
  • Published: 10/12/2017
  • Est. Priority Date: 04/12/2016
  • Status: Active Grant
First Claim
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1. A method for a first switch to perform congestion-aware load balancing in a data center network that includes the first switch, multiple next-hop second switches, a third switch and a fourth switch, the method comprising:

  • receiving probe packets from the multiple next-hop second switches that connect the first switch with the third switch via multiple paths, wherein each probe packet identifies the third switch and includes congestion state information associated with one of the multiple paths to the third switch;

    processing the congestion state information in each probe packet to select a selected next-hop second switch from the multiple next-hop second switches, wherein the selected next-hop second switch is associated with a least congested path from the first switch to the third switch; and

    in response to receiving data packets from the fourth switch that are destined for a destination connected with the third switch, sending the data packets to the selected next-hop second switch such that the data packets travel to the third switch along the least congested path.

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