發(fā)布時間：2018-04-11 02:08

  本文選題：智慧協(xié)同網(wǎng)絡 + 映射服務器��； 參考：《北京交通大學》2017年碩士論文

【摘要】：隨著互聯(lián)網(wǎng)用戶規(guī)模和應用數(shù)量的急劇增長,其原始設計思想中的諸多缺陷(如安全性、移動性、可生存性等)逐漸顯現(xiàn)。作為未來網(wǎng)絡架構研究方案之一,北京交通大學下一代互聯(lián)網(wǎng)互聯(lián)設備國家工程實驗室提出的智慧協(xié)同網(wǎng)絡旨在從根本上解決"控制與數(shù)據(jù)","資源與位置","用戶與網(wǎng)絡"的三重綁定問題。由于網(wǎng)絡的抗毀性與三重綁定息息相關,目前已得到學術界和產(chǎn)業(yè)界越來越廣泛的重視。作為評價未來網(wǎng)絡架構的關鍵指標,抗毀性表征了網(wǎng)絡出現(xiàn)故障后維持一定性能水平的能力。本文基于智慧協(xié)同網(wǎng)絡理論,從網(wǎng)絡拓撲和映射服務器兩個角度聚焦了抗毀性問題并提出了相關優(yōu)化策略。論文主要內(nèi)容包括:首先,提出了一種鏈路權重優(yōu)化方案�；诮閿�(shù)中心度一階差分與抗毀性之間的數(shù)學關系,通過改變數(shù)據(jù)包傳輸路徑,調整了網(wǎng)絡節(jié)點的使用率。提出了一種關鍵節(jié)點保護方案。根據(jù)最大節(jié)點度確定關鍵節(jié)點集合,通過合理增加鏈路冗余,降低了關鍵節(jié)點受攻擊概率。其次,設計并實現(xiàn)了智慧協(xié)同網(wǎng)絡映射服務器抗毀性優(yōu)化方案。設計了線程池模塊,實現(xiàn)了從單線程處理映射關系模式到多線程處理映射關系模式的改進,提高了映射服務器在接收高并發(fā)請求時的處理能力。設計了再哈希模塊,實現(xiàn)了動態(tài)哈希表,使映射服務器內(nèi)存中的哈希表既滿足查詢映射關系的時間復雜度為O(1),又能夠保證哈希表不會占用過多內(nèi)存,提高了存儲資源的使用率。然后,搭建了測試環(huán)境,并對上述方案及模塊進行了驗證。測試結果顯示上述方案和模塊能夠有效地提高智慧協(xié)同網(wǎng)絡映射服務器的抗毀性。最后,對全文進行了總結,并對未來工作進行了展望。
[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.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP393.0

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本文編號：1733947