The Design And Implementation Of Cluster Service Platform For Session Control System

In recent years, with the new demands of Convergent Networks, new technology has appeared constantly. The expectation of users about Convergent Network has been higher. The Session Control System is the important part of Convergent Network System. And Providing a high-performance Session Control System is the basic precondition of realizing the Convergent Network. the Session Control System can be optimized by using Cluster Service Platform, the high-performance Load Balance device is the key department of Cluster Service Platform. The management and controlling System is the necessary for building the Cluster Service Platform.This article first analyzes the function needs and non-function needs of Cluster Service Platform of Session Control System. The function needs of the system include system functions and interfaces with external system; and the non-function needs include stability and scalability and so on.The whole system is divided into DNS load layer, local loading layer and service point layer. Every layer has its own function blocks. The LB (load balance sub-system) has been deployed at the DNS load layer and local loading layer. And MC (management and controlling sub-system) has been deployed at the DNS load layer, local loading layer and service point layer.The LB is divided into the DNS load balance device and local load balance device these two parts. This article first shows the function needs of these two parts. Then, describe the tactic of load balance of these two parts. At last, this article describes the function department of the two load balance systems minutely, and introduces how these two devices to work together.MC is divided into DNS load layer management and controlling device, local load layer management and controlling device and service point management controlling device. These three parts manage and control the whole system. This article introduces the design of function departments of these three parts and the approach of the heartbeat messages, then, introduces how these three devices to work together.Otherwise, this article also introduces the design and implementation of the Log tools and configuration file analytical tools which will be used in this system.After completing the system design and implementation, this article describes the platform operation environment, including hardware environment and software environment. In order to verify the platform having been implemented whether meets the requirements of the main function, this article designs a series of test cases to test it. Finally, the paper summarizes the work the author have done and the work to be done in the future.