Server load balancing method for software defined network

A load balancing, software-oriented technology, applied in the field of computer networks, can solve the problems of increasing network processing data redundancy, network management difficulty, increasing the complexity of basic equipment, etc.

Active Publication Date: 2016-06-29
NANJING ZHAOSHICHANG NETWORK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These patching methods additionally increase the complexity of the basic equipment, inc

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  • Server load balancing method for software defined network
  • Server load balancing method for software defined network
  • Server load balancing method for software defined network

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Embodiment 1

[0086] In this embodiment, the server load balancing method for software-defined network adopts such as figure 2The topology shown connects related devices, and four servers form a web server cluster. The controller is responsible for deploying dynamic policies to balance the access burden of each Web server. The server cluster provides a virtual IP address externally. When a new host user accesses the virtual IP of the Web server cluster or the server cluster needs to perform load scheduling, according to the load balancing method in the present invention, the SDN controller adds the flow table or modifies the flow table The way to assign a suitable server to the user's host, the specific method includes the following steps:

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Abstract

The invention discloses a server load balancing method for a software defined network. In a software defined network (Software Defined Network, referred to as SDN) environment, the server load balancing method realized by a modular idea comprises the following steps in sequence: a port detection module periodically counts real-time flow of an SDN switch port connected with each server and calculates a flow rate and a predicted port flow rate of a next test time point; a port flow rate analysis module analyzes each port flow rate obtained from the port detection module and judges whether load balancing needs to be carried out or not; and a load balancing module carries out load balancing on a server cluster, and an SDN controller release flow table, allocates new service flow to a specified server. According to the server load balancing method disclosed by the invention, the real-time flow rate and the predicted flow rate are comprehensively considered, and the advantages of separate architecture of SDN control and a forwarding phase are combined, so that the load balancing ability and efficiency are relatively good.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a server load balancing method oriented to a software-defined network. Background technique [0002] In the traditional TCP / IP network structure system, network device logic control and data forwarding are tightly coupled, lacking flexibility, and various problems and challenges are exposed as the network scale rapidly expands. People can only continue to add new network protocols or add various complex functions to basic network devices such as switches and routers. These patching methods additionally increase the complexity of the basic equipment, increase the redundancy of network processing data and the difficulty of network management. The emergence of the SDN concept and related technologies is precisely to overcome the above shortcomings. [0003] SDN is a new network architecture with CNC separation and network programmable. From top to bottom, it...

Claims

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Application Information

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IPC IPC(8): H04L29/08
CPCH04L67/1001
Inventor 龚冉崔杰王良民仲红谢晴晴殷赵霞肖云
Owner NANJING ZHAOSHICHANG NETWORK TECH
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