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    • 10. 发明公开
    • TRANSPARENT LOAD BALANCING
    • US20240031428A1
    • 2024-01-25
    • US18211562
    • 2023-06-19
    • VMware, Inc.
    • Srinivasa Srikanth PodilaHiral MehtaVarun Lakkur Ambaji Rao
    • H04L67/1004
    • H04L67/1004
    • Some embodiments provide a method of performing load balancing on client traffic sent to a cluster of servers that are associated with a common network address (e.g., for a VIP address associated with a service provided by the cluster of servers). The method assigns a cluster of two or more transparent load balancers to the common network address associated with the server cluster. The method configures at least two of these transparent load balancers as active transparent load balancers that concurrently (1) receive data message flows sent by clients directed to the common network address, (2) select one of the servers for each flow, and (3) forward each flow to the server selected for the flow without modifying a source network address (e.g., IP network address) of the flow. In some embodiments, the transparent load balancers do not modify the source network addresses for the flows that the load balancers forward to the servers because the servers need the source network addresses for operations that the servers perform for the forwarded data messages. The method also configures each active transparent load balancer to provide information to a default gateway regarding each flow processed by the active transparent load balancer. This flow information will allow the default gateway to forward to the active transparent load balancer responsive data messages that the servers send back to the clients for the flows that the active transparent load balancer forwarded to the servers.