The Study of Load Balance and Fault Tolerance of SIP Proxy Server 顏敏峰、黃培壝
E-mail: 9509673@mail.dyu.edu.tw
ABSTRACT
SIP （Session Initiation Protocol） is a well-known technology of the feature IP network. SIP is also adopted for the technical standard of the feature wireless multimedia communication by the third generation mobile communication system （3G）. In RFC3261, there is no detailed definition of how to manage multiple SIP proxy servers. We have proposed a method in this paper, which enable the fault-tolerant and load-sharing function of SIP proxy server by using multiple SIP proxy servers. The proposed load-sharing scheme increases the usability of the SIP system. It adjusts the number of the replicas of the user’s data according a priority, which is calculated by a function of called-rate of a user. By replicating user’s data, the proposed method does not merely share the load of each proxy server; it also can reduce the impact of the server-crashing. Finally, the simulation shows the
load-sharing and priority-based data replication method significantly reduces the average loading per proxy server and improves the usability of SIP system.
Keywords : SIP, 3GPP, SIP Proxy Server, Load Sharing, Fault Tolerance Table of Contents
封面內頁 簽名頁 授權書...iii 中文摘要...iv 英文摘
要...v 誌謝...vi 目錄...vii 圖目
錄...ix 表目錄...xi 1. 簡介...1 2. SIP 協定及容 錯相關研究探討...4 2.1 SIP 介紹...4 2.2 SIP 網路元件...5 2.3 資料多 重備援相關研究...9 3. 本論文SIP 流量分散以及容錯方式...13 3.1 流量分
散...14 3.2 優先權重複備援...18 3.3 容錯模式...21 3.4 改善通 訊延遲方法...23 4. 模擬模型與結果評估...25 4.1 數據分析...27 5. 結 論和未來工作...39 5.1 結論...39 5.2 未來工作...40 參考文 獻...41
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