智慧协同网络映射服务器抗毁性研究

发布时间：2018-04-11 02:08

本文选题：智慧协同网络 + 映射服务器　；参考：《北京交通大学》2017年硕士论文

【摘要】：随着互联网用户规模和应用数量的急剧增长,其原始设计思想中的诸多缺陷(如安全性、移动性、可生存性等)逐渐显现。作为未来网络架构研究方案之一,北京交通大学下一代互联网互联设备国家工程实验室提出的智慧协同网络旨在从根本上解决"控制与数据","资源与位置","用户与网络"的三重绑定问题。由于网络的抗毁性与三重绑定息息相关,目前已得到学术界和产业界越来越广泛的重视。作为评价未来网络架构的关键指标,抗毁性表征了网络出现故障后维持一定性能水平的能力。本文基于智慧协同网络理论,从网络拓扑和映射服务器两个角度聚焦了抗毁性问题并提出了相关优化策略。论文主要内容包括:首先,提出了一种链路权重优化方案。基于介数中心度一阶差分与抗毁性之间的数学关系,通过改变数据包传输路径,调整了网络节点的使用率。提出了一种关键节点保护方案。根据最大节点度确定关键节点集合,通过合理增加链路冗余,降低了关键节点受攻击概率。其次,设计并实现了智慧协同网络映射服务器抗毁性优化方案。设计了线程池模块,实现了从单线程处理映射关系模式到多线程处理映射关系模式的改进,提高了映射服务器在接收高并发请求时的处理能力。设计了再哈希模块,实现了动态哈希表,使映射服务器内存中的哈希表既满足查询映射关系的时间复杂度为O(1),又能够保证哈希表不会占用过多内存,提高了存储资源的使用率。然后,搭建了测试环境,并对上述方案及模块进行了验证。测试结果显示上述方案和模块能够有效地提高智慧协同网络映射服务器的抗毁性。最后,对全文进行了总结,并对未来工作进行了展望。
[Abstract]:With the rapid growth of Internet users and the number of applications, many defects (such as security, mobility, survivability, etc.) in the original design ideas have been gradually revealed.As one of the future network architecture research projects,The intelligent cooperative network proposed by the National Engineering Laboratory of next Generation Internet Interconnection equipment of Beijing Jiaotong University aims to solve the triple binding problems of "control and data", "resource and location" and "user and network" fundamentally.Because the network survivability is closely related to triple binding, it has been paid more and more attention by academia and industry.As a key indicator to evaluate the future network architecture, survivability represents the ability to maintain a certain level of performance after a network failure.Based on the intelligent cooperative network theory, this paper focuses on the invulnerability from the network topology and mapping server, and puts forward the related optimization strategy.The main contents of this paper are as follows: firstly, a link weight optimization scheme is proposed.Based on the mathematical relationship between the first-order difference of the centroid and the invulnerability, the utilization rate of the network nodes is adjusted by changing the transmission path of the data packets.A key node protection scheme is proposed.The critical node set is determined according to the maximum node degree, and the attack probability of the critical node is reduced by reasonably increasing the link redundancy.Secondly, the intelligent cooperative network mapping server survivability optimization scheme is designed and implemented.A thread pool module is designed to improve the mapping model from single thread processing to multi thread processing and to improve the processing ability of mapping server when receiving high concurrent requests.The rehash module is designed and the dynamic hash table is implemented, which makes the hash table in the memory of mapping server not only satisfy the time complexity of query mapping relationship, but also ensure that the hash table does not occupy too much memory, thus increasing the utilization rate of storage resources.Then, the test environment is built, and the above scheme and module are verified.The test results show that the above schemes and modules can effectively improve the survivability of intelligent collaborative network mapping server.Finally, the full text is summarized and the future work is prospected.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.0

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