基于拜占庭容錯提高SDN控制層可靠性的研究
發(fā)布時間：2019-03-22 10:20
【摘要】：軟件定義網(wǎng)絡(software defined network,SDN)提出了控制與轉發(fā)分離的設計結構,實現(xiàn)了開放的可編程網(wǎng)絡接口,為網(wǎng)絡提供了更細粒度的管理.然而,SDN在為網(wǎng)絡應用帶來創(chuàng)新與便利的同時,也面臨著一些新的問題.針對SDN網(wǎng)絡中控制層的可靠性問題,提出了一種容忍拜占庭錯誤的方法.首先,結合SDN網(wǎng)絡的特性,具體闡述了在應用拜占庭容錯算法時的網(wǎng)絡結構、工作流程和異常處理等,并對其中的多控制器位置部署問題建立分析模型;然后,針對該多控制器部署問題,設計了啟發(fā)式求解算法;最后,通過仿真實驗對該容錯方法和部署算法進行驗證.實驗結果表明:該容錯方法能夠有效處理控制器中的錯誤,提高控制層的可靠性,但對系統(tǒng)的性能會造成一定程度的影響.同時,該部署算法能夠有效降低處理OpenFlow請求的傳輸延遲.
[Abstract]:Software defined Network (software defined network,SDN) puts forward the design structure of separation of control and forwarding, and implements an open programmable network interface, which provides more fine-grained management for the network. However, while SDN brings innovation and convenience to network application, it also faces some new problems. In order to solve the reliability problem of control layer in SDN network, a method of tolerating Byzantine errors is proposed. Firstly, according to the characteristics of SDN network, the network structure, workflow and exception handling of Byzantine fault-tolerant algorithm are described in detail, and the analysis model of multi-controller location deployment is established. Then, a heuristic algorithm is designed to solve the multi-controller deployment problem. Finally, the fault-tolerant method and the deployment algorithm are verified by simulation experiments. The experimental results show that the fault-tolerant method can effectively deal with the errors in the controller and improve the reliability of the control layer, but it will affect the performance of the system to a certain extent. At the same time, the deployment algorithm can effectively reduce the transmission delay of processing OpenFlow requests.
【作者單位】： 國家數(shù)字交換系統(tǒng)工程技術研究中心;
【基金】：國家自然科學基金項目(61521003)~~
【分類號】：TP393.02
本文編號：2445508
[Abstract]:Software defined Network (software defined network,SDN) puts forward the design structure of separation of control and forwarding, and implements an open programmable network interface, which provides more fine-grained management for the network. However, while SDN brings innovation and convenience to network application, it also faces some new problems. In order to solve the reliability problem of control layer in SDN network, a method of tolerating Byzantine errors is proposed. Firstly, according to the characteristics of SDN network, the network structure, workflow and exception handling of Byzantine fault-tolerant algorithm are described in detail, and the analysis model of multi-controller location deployment is established. Then, a heuristic algorithm is designed to solve the multi-controller deployment problem. Finally, the fault-tolerant method and the deployment algorithm are verified by simulation experiments. The experimental results show that the fault-tolerant method can effectively deal with the errors in the controller and improve the reliability of the control layer, but it will affect the performance of the system to a certain extent. At the same time, the deployment algorithm can effectively reduce the transmission delay of processing OpenFlow requests.
【作者單位】： 國家數(shù)字交換系統(tǒng)工程技術研究中心;
【基金】：國家自然科學基金項目(61521003)~~
【分類號】：TP393.02
【相似文獻】
相關期刊論文 前3條
1 余麗靜;;網(wǎng)絡異常情況下的拜占庭容錯算法研究[J];計算機光盤軟件與應用;2013年15期
2 王靜宇;王秀蘋;張曉琳;;云計算下基于拜占庭算法的容忍入侵技術研究[J];內(nèi)蒙古科技大學學報;2012年04期
3 ;[J];;年期
相關博士學位論文 前1條
1 王秀群;可實用的拜占庭容錯系統(tǒng)理論研究[D];浙江大學;2007年
相關碩士學位論文 前3條
1 俞啟梁;基于節(jié)點行為分析的安全分布式目標定位方法[D];浙江大學;2016年
2 孫冠男;基于本體的拜占庭攻擊建模及檢測的研究[D];蘭州理工大學;2011年
3 張冰濤;基于CBC的抗拜占庭攻擊安全網(wǎng)絡編碼模型研究與設計[D];蘭州理工大學;2011年
，本文編號：2445508
本文鏈接：http://sikaile.net/guanlilunwen/ydhl/2445508.html
最近更新
教材專著
