軟件定義網(wǎng)絡(luò)中基于負載均衡的多控制器部署算法

史久根; 邾偉; 賈坤滎; 徐穎

doi:10.11999/JEIT170464

軟件定義網(wǎng)絡(luò)中基于負載均衡的多控制器部署算法

doi: 10.11999/JEIT170464

基金項目:

國家重大科學儀器設(shè)備開發(fā)專項(2013YQ030595)

計量
- 文章訪問數(shù): 1515
- HTML全文瀏覽量: 250
- PDF下載量: 292
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-05-16
- 修回日期: 2017-07-17
- 刊出日期: 2018-02-19

Multi-controller Deployment Algorithm Based on Load Balance in Software Defined Network

Funds:

The National Major Scientific Instruments Development Project (2013YQ030595)

摘要

摘要: 隨著軟件定義網(wǎng)絡(luò)規(guī)模擴大，控制層與數(shù)據(jù)層解耦帶來了諸如控制器部署等新問題。該文提出基于負載均衡的多控制器部署算法(Multi-Controller Deployment Algorithm Based on Load Balance, MCDALB)。算法首先根據(jù)網(wǎng)絡(luò)拓撲結(jié)構(gòu)及其負載情況，確定控制器數(shù)量K；然后根據(jù)控制器容量限制，提出一種近似比為2的多控制器負載均衡算法，將網(wǎng)絡(luò)劃分成K個控制區(qū)域；最后根據(jù)區(qū)域內(nèi)所有交換機到控制器距離總和最小原則，在控制區(qū)域部署控制器。為了驗證算法的性能，選取實際網(wǎng)絡(luò)拓撲進行實驗。實驗結(jié)果表明，與AL, WL算法相比，該算法在滿足控制器負載近似比為2的同時，網(wǎng)絡(luò)最大延時差距不超過0.65 ms。
- 軟件定義網(wǎng)絡(luò) /
- 控制器部署 /
- 負載均衡
Abstract: With the expansion of Software Defined Network (SDN), the decoupling of control layer and data layer brings new problems such as controller deployment. In this paper, a Multi-Controller Deployment Algorithm Based on Load Balance (MCDALB) in SDN is proposed. Firstly, the number, K, of controllers is determined based on network topology and its load. Secondly, according to the limitation of controller capacity, a multi-controller load balance algorithm with approximate ratio of 2 is proposed, which divides the network into K control regions. Lastly, the position of the controller in each region is selected, according to the minimum sum of all switch-to-controller distances in the region. In order to verify the performance of the proposed algorithm, the actual network topologies are applied. As to compare with the AL and WL algorithms, simulation results show that the proposed algorithm not only balances the controllers load, with an approximation ratio of 2, but also meets the maximum gap of network delay not more than 0.65 ms.
- Software Defined Network (SDN) /
- Controller deployment /
- Load balance

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參考文獻(19)

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