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计算机系统应用英文版:2013,22(9):18-24,35

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一种基于网络地址转换的LVS数据转发模式

魏振伟^1,2,3, 顾乃杰^1,2,3, 彭建章^1,2,3, 张颖楠^1,2,3

(1.中国科学技术大学计算机科学技术学院, 合肥 230027;2.中国科学技术大学安徽省计算与通信软件重点实验室, 合肥 230027;3.中国科学技术大学中科院沈阳计算所网络与通信联合实验室, 合肥 230027)

A NAT-Based Data Forward Method for LVS

WEI Zhen-Wei^1,2,3, GU Nai-Jie^1,2,3, PENG Jian-Zhang^1,2,3, ZHANG Ying-Nan^1,2,3

(1.School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China;2.Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China;3.USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China)

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本文已被：浏览 1532次下载 2904次
Received:March 14, 2013 Revised:April 15, 2013

中文摘要: 研究Linux虚拟服务器(Linux Virtual Server, 简称LVS)工作原理, 分析其数据转发流程. 针对LVS在多虚拟局域网环境下的部署应用问题, 设计实现了一种基于网络地址转换的数据转发模式Double-NAT. Double-NAT模式重新组织连接哈希表为双向桶结构, 使用系统分配的端口区分IN和OUT方向的数据流, 使得多VLAN下的数据包均能通过网络地址转换后转发. 测试结果表明, Double-NAT数据转发模式配置简单、性能良好, 能够有效应用于多虚拟局域网环境.

中文关键词: Linux虚拟服务器网络地址转换数据转发最大并发连接数

Abstract:This paper studies the working principle of Linux Virtual Server (LVS), and analyzes its data forward process. To make LVS deployable in the environment of multiple VLANs (Virtual Local Area Network), this paper designs and implements a data forward method naming Double-NAT based on Network Address Translation(NAT). The Double-NAT method organizes the connection hash table in double-direction hash bucket, and uses system allocated port to distinguish data flow of IN and OUT direction, thus data in multiple VLANs can be forwarded via network address translation. Test results show that Double-NAT data forward method makes LVS work well in multiple VLANs environment with easy configuration and good performance.

keywords: Linux virtual server network address translation data forward maximum concurrent connection

文章编号： 中图分类号： 文献标志码：

基金项目:“核高基”重大专项(2009ZX01028-002-003-005);高等学校学科创新引智计划(B07033)

Author Name	Affiliation
WEI Zhen-Wei	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China
GU Nai-Jie	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China
PENG Jian-Zhang	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China
ZHANG Ying-Nan	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China

Author Name	Affiliation
WEI Zhen-Wei	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China
GU Nai-Jie	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China
PENG Jian-Zhang	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China
ZHANG Ying-Nan	School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027, China USTC &SICT Network and Communication Joint Laboratory, Hefei 230027, China

引用文本：
魏振伟,顾乃杰,彭建章,张颖楠.一种基于网络地址转换的LVS数据转发模式.计算机系统应用,2013,22(9):18-24,35
WEI Zhen-Wei,GU Nai-Jie,PENG Jian-Zhang,ZHANG Ying-Nan.A NAT-Based Data Forward Method for LVS.COMPUTER SYSTEMS APPLICATIONS,2013,22(9):18-24,35