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Research on Implemention of OSPFv3 Routing Protocol Software on FreeBSD Operating System

SUN Qing-Nan,LU Shi-Wen,

计算机科学 , 2005,
Abstract: With explosive expanding of IPv6 protocol used in Internet, people pay more attention on routers with IPv6 support. The area of designing and developing routing protocol based on IPv6 is more important. This paper analyzes the differences between OSPFv2 and OSPFv3, and designs an OSPFv3 routing software according to RFC 2740. The software is excuted well in experimental network environment.
Conformance Test Research on OSPFv3 Based on XML

LI Hu,ZHANG Tao,YE Xin-Ming,GUO Yi-Jing,LI Yuan-Ping,BAI Rui-Feng,

计算机科学 , 2007,
Abstract: 协议测试是检测协议实现与协议说明相一致的有效手段。本文针对开放最短路径协议OSPFv3进行了一致性测试研究,分析了OSPFv2和OSPFv3的不同,给出了用XML来描述OSPFv3测试套的测试模板,并对OSPFv3协议在Linux下的实现进行了一致性测试,列举了部分测试结果,对测试结果进行了分析,发现了被测实现存在与协议说明不一致的地方。
基于xml的ospfv3一致性测试研究  [PDF]
李华 张涛 叶新铭 郭怡静 李元平 白瑞峰?
计算机科学 , 2007,
Abstract: 协议测试是检测协议实现与协议说明相一致的有效手段。本文针对开放最短路径协议ospfv3进行了一致性测试研究,分析了ospfv2和ospfv3的不同,给出了用xml来描述ospfv3测试套的测试模板,并对ospfv3协议在linux下的实现进行了一致性测试,列举了部分测试结果,对测试结果进行了分析,发现了被测实现存在与协议说明不一致的地方。
ospfv3路由协议在freebsd下的实现研究  [PDF]
计算机科学 , 2005,
Abstract: 随着ipv6协议在internet中的广泛应用,人们更多地将注意力集中在路由器对ipv6协议的支持上。设计和开发基于ipv6的路由协议软件也更加重要。本文分析了ospfv2路由协议与ospfv3路由协议之间的不同,并且基于rfc2740设计开发了一个ospfv3路由协议软件,该软件在实验网络环境中的运行取得了良好的效果。
Implementation of Graceful Restart Mechanism in OSPFv3 Protocol
OSPFv3 协议中平滑重启机制的实现

HU Jian-Ping,PING Dan,

计算机系统应用 , 2012,
Abstract: This paper discusses an approach that supporting GR mechanism in OSPFv3 protocol to avoid the routing oscillation and data forwarding interruption during router restarting, thereby improving the reliability of the network. Based on the realization of OSPFv3 basic functions, it focuses on the working principle and the concrete realization of IETF standard GR mechanism, analysis the running process and message interaction of OSPFv3 GR in detail. The test results show that the GR mechanism can ensure the data forwarding flow without interruption during protocol restarting.
E. Hosseini Koupaie,M.R. Alavi Moghaddam,H. Hashemi
Iranian Journal of Environmental Health Science & Engineering , 2011,
Abstract: The main objective of present work was to compare the overall performances of "moving-bed" and "conventional" sequencing batch reactor. For this purpose, different experimental parameters including COD and dye concentration, turbidity, MLSS concentration, MLVSS/MLSS ratio, sludge volume index (SVI) and Oxidation-Reduction Potential (ORP) were calculated. One conventional sequencing batch reactor and three moving-bed sequencing batch reactors (MB-SBR) were operated in this study. Each MB-SBR was equipped with a type of moving biofilm carrier. The results of dye, COD and turbidity analysis showed that there were no significant differences between the moving-bed and conventional sequencing batch reactors in the matters of effluent quality. A higher fluctuation of MLSS concentration and also higher SVI were observed in moving-bed compared to that of the conventional sequencing batch reactor. Higher ORP values which mean higher oxidation potential were measured in the reactors equipped with the moving carriers in comparison with those measured in the conventional sequencing batch reactor.
Comparison between GFDM and VOFDM  [PDF]
Maximilian Matthé,Ivan Gaspar,Luciano Mendes,Dan Zhang
Mathematics , 2015,
Abstract: This document provides a comparison of the transmission techniques used in Generalized Frequency Division Multiplexing (GFDM) and Vector-OFDM (VOFDM). Within the document both systems are coarsely described and common and distinct properties are highlighted.
The comparison between LAC and ALA  [PDF]
Tzu-heng Chiu
Journal of Library and Information Studies , 2000,
Abstract: A good library association serves its members, improves the librarianship, and helps library institutions achieving their missions. This article describes the history, missions and goals, organization structure, membership, financial sources, professional activities, publication, and website of the Library Association of China (LAC) and American Library Association (ALA), respectively. Considering social / cultural / political differences between Taiwan and the United Sates, the author then compares these two library associations from the eight factors mentioned above. At the end, suggestions for the LAC are proposed.[Article content in Chinese]
Comparison between Model Order Reductions Techniques
Gaurav Daga,Dr. Veena Sharma
International Journal of Electronics and Computer Science Engineering , 2012,
Abstract: This paper presents a comparison between model order reduction techniques. This comparison provides us a measure of the accuracy of the reduced system. By this comparison we come to know about the best method which can be used for model order reduction. In this paper we are also providing a comparison for stability of reduced system.
Comparison between the DSMC and DSBGK Methods  [PDF]
Jun Li
Physics , 2012,
Abstract: Recently, the DSBGK method (note: the original name DS-BGK is changed to DSBGK for simplicity) was proposed based on the BGK equation to reduce the stochastic noise in simulating rarefied gas flows at low velocity, in which the deviation from equilibrium state is small making the traditional DSMC simulation time-consuming due to the dominance of noise in transient results. In both DSMC and DSBGK simulations, the simulated molecules move into and out of cells randomly and frequently. Consequently, the transient information of molecules in each particular cell contains significant noise. The DSMC method uses the transient values of molecular variables to compute the cell's variables (including number density, flow velocity and temperature) and so the stochastic noise in its cell's variables is remarkable particularly in the case of low velocity. In the DSBGK simulation, the increments rather than the transient information of molecular variables are used to update the cell's variables based on the mass, momentum and energy conservation principles of intermolecular collision process. This updating scheme significantly reduces the noise in cell's variables of DSBGK simulations because the molecular variables are updated smoothly by the extrapolation of acceptance-rejection scheme and so their increments contain low noise. The detailed comparisons of algorithms and results between the DSMC and DSBGK methods are given here. Several benchmark problems are simulated to verify the DSBGK method by comparison with the DSMC method as criterion.
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