Designing Fault-Tolerance Mechanisms for Software-Defined Networks

瀏覽統計 Email 通知 RSS Feed

簡歷

基本資料

Project title

Code/計畫編號

MOST106-2221-E032-016

Translated Name/計畫中文名

軟體定義網路之容錯機制設計與建構

Project Coordinator/計畫主持人

Chien-Fu Cheng

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Tamkang University Department of Computer Science and Information Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=12272092

Year

2017

Start date/計畫起

31-08-2017

Expected Completion/計畫迄

31-07-2018

Bugetid/研究經費

600千元

ResearchField/研究領域

電信工程

不同於傳統網路架構，新世代的軟體定義網路強調的是控制與轉發分離，透過軟體程式來控制網路，進而達到靈活方便地管理網路之特點。早期的軟體定義網路是採集中式的控制方式，也就是整個網路中只有一個控制器，透過此唯一的控制器來管理網路。然而透過單一的控制器來管理軟體定義網路，將會有單點失效問題。除此之外，當網路規模很大時，將存在著可擴展性的問題，這將使得網路的穩定性與效能難以獲得保障。因此後續就有學者提出藉由多個控制器來協同完成對網路的控制工作。利用多部控制器協同工作的分散式控制架構將可以有效地提升網路的效能與穩定度。然而現今的網路環境中存在著許多的攻擊與威脅，當控制器受到駭客攻擊或病毒感染時，將會使得控制器無法正常運作。為了提供容錯能力以及可靠的計算環境於分散式架構之軟體網路中，本計畫書擬提出兩年期之研究計畫，針對以下四大議題做探討。議題1：軟體定義網路中交換器與控制器所形成之連結拓樸、議題2：適用於軟體定義網路之容錯協議演算法、議題3：適用於軟體定義網路之即時容錯協議演算法、議題4：適用於軟體定義網路環境之故障裝置隔離機制。 Unlike traditional networking structures, the new-generation software-defined network (SDN) separates the network control and forwarding and enables the network control to be software programmable, making flexible and convenient management a key feature of SDN. The early structure of SDN relies on centralized control, that is, the entire network is managed by only one controller. However, SDN managed by only one controller may suffer single point of failure (SPOF) problems. Besides, if the network is large in size, the scalability problem will make it hard to ensure the stability and performance of the network. Thus, later researchers have proposed to use multiple controllers to control the network collaboratively. A distributed control structure involving collaboration of multiple controllers can effectively enhance the performance and stability of SDNs. However, attacks and threats are prevalent in today’s networking environment. SDN controllers may lose its normal functions when it is attacked by hackers or infected with viruses. In order to provide a fault-tolerant and reliable computing environment in distributed SDNs, this research project is expected to span two years and focus on four primary issues, including (1) the connection topology formed by switches and controllers in SDNs, (2) the fault-tolerant agreement algorithm for SDNs, (3) the early stopping agreement algorithm for SDNs, and (4) the faulty devices isolation mechanism for SDNs.

Keyword(s)

軟體定義網路
網路拓樸
容錯機制
隔離機制
software-defined network
network topology
fault-tolerant mechanism
isolation mechanism

DSpace CRIS

Designing Fault-Tolerance Mechanisms for Software-Defined Networks

基本資料

Description