Distributed server load balancing method based on SDN

A distributed server and load balancing algorithm technology, applied in the field of network applications, can solve problems such as insufficient reliability, high investment cost, and poor scalability, and achieve the effects of wide application range, expanded system capacity, and enhanced reliability

Inactive Publication Date: 2014-05-14
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can solve the disadvantages of high investment cost, poor scalability, and insufficient reliability in the existing load balancing scheme

Method used

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  • Distributed server load balancing method based on SDN
  • Distributed server load balancing method based on SDN

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Experimental program
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Embodiment

[0033] The SDN-based distributed server load balancing method of this embodiment adopts such as figure 2 The shown topology connects related devices, and the controller is responsible for deploying dynamic policies to balance the access burden of each web server. like figure 1 As shown, user access requests are distributed into the load balancing network, and the SDN controller makes a unified decision according to the operating load of the network, and dynamically deploys routing to forward the request to an appropriate server to complete the server-side load balancing. The method includes the following step:

[0034] (1) The SDN load balancing network deployed with server clusters has multiple external access ports, and the user's access request to the web server enters the SDN network through any of the two access ports;

[0035] (2) When the routing rule matching the request has been deployed on the SDN network device where the request arrives, perform the corresponding...

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Abstract

The invention discloses a distributed server load balancing method based on the SDN. Through the advantage of the SDN structure where a control face and a forwarding face are separated, a user access request arrives at a certain device on the SDN, then, an SDN controller dynamically dispatches the user access request to an appropriate server according to the network running state, and therefore server load balancing is achieved. By means of the distributed server load balancing method, comprehensive fault tolerance can be achieved from the access process and the forwarding process to the service process, the total load bearing capacity of a server cluster is brought into full play, and running expandability and running reliability of the whole system are improved.

Description

technical field [0001] The invention belongs to the technical field of network applications, and in particular relates to an SDN-based distributed server load balancing method. Background technique [0002] Software-defined networking (SDN for short) is a network virtualization (Network virtualization) technology proposed by the Clean State program of Stanford University in the United States. Using the OpenFlow protocol, the router's control plane (control plane) is separated from the data plane (data plane), and implemented in software. This architecture allows network administrators to re-plan the network with a central control method without changing the hardware equipment. It provides a new method for controlling network traffic and provides a good platform for core network and application innovation. [0003] Load Balance (LB) refers to the idea of ​​balancing and distributing loads (work tasks) to multiple operating units for execution, so as to jointly complete work ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
Inventor 黄刘生孙文君徐宏力牛庆功
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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