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Methods of load balancing using primary and stand-by addresses and related load balancers and servers

  • US 9,137,165 B2
  • Filed: 06/17/2013
  • Issued: 09/15/2015
  • Est. Priority Date: 06/17/2013
  • Status: Active Grant
First Claim
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1. A method of forwarding data packets from a load balancer to a plurality of servers, the method comprising:

  • receiving a first data packet of a data flow wherein the first data packet is addressed to a primary address for the load balancer and wherein the first data packet includes information for the data flow;

    computing a bucket ID for the first data packet as a function of the information for the data flow;

    responsive to the bucket ID for the first data packet mapping to first and second servers of the plurality of servers and responsive to the first data packet being addressed to the primary address for the load balancer, transmitting the first data packet to the first server;

    receiving a second data packet of the data flow wherein the second data packet is addressed to a stand-by address for the load balancer and wherein the second data packet includes the information for the data flow;

    computing a bucket ID for the second data packet as a function of the information for the data flow wherein the bucket IDs for the first and second packets are the same bucket ID;

    responsive to the bucket ID for the second data packet mapping to first and second servers of the plurality of servers and responsive to the second data packet being addressed to the stand-by address for the load balancer, transmitting the second data packet to the second server.

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