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Enhancing end-to-end availability an...

Han, Junghee.

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Enhancing end-to-end availability and performance by leveraging Internet redundancy.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Enhancing end-to-end availability and performance by leveraging Internet redundancy./
作者:	Han, Junghee.
面頁冊數:	113 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-10, Section: B, page: 5230.
Contained By:	Dissertation Abstracts International65-10B.
標題:	Computer Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3150210
ISBN:	0496097865

Enhancing end-to-end availability and performance by leveraging Internet redundancy.
Han, Junghee.

Enhancing end-to-end availability and performance by leveraging Internet redundancy. - 113 p.

Source: Dissertation Abstracts International, Volume: 65-10, Section: B, page: 5230.

Thesis (Ph.D.)--University of Michigan, 2004.

In this thesis, we explore an emerging area of research---enhancing end-to-end performance and availability by leveraging the redundancy of the Internet. As the Internet is increasingly utilized as a business necessity, connectivity and network availability are becoming business-critical resources since even short-lived failures can generate significant losses. While ensuring a high level of end-to-end availability and performance is critical, current routing protocols have not been successful in masking path failures and/or network congestion to endhosts.

ISBN: 0496097865Subjects--Topical Terms:

626642
Computer Science.

Enhancing end-to-end availability and performance by leveraging Internet redundancy.
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520 $a In this thesis, we explore an emerging area of research---enhancing end-to-end performance and availability by leveraging the redundancy of the Internet. As the Internet is increasingly utilized as a business necessity, connectivity and network availability are becoming business-critical resources since even short-lived failures can generate significant losses. While ensuring a high level of end-to-end availability and performance is critical, current routing protocols have not been successful in masking path failures and/or network congestion to endhosts.
520 $a This thesis presents the results of our work to maximize end-to-end application performance and availability by effectively leveraging the inherent redundancy of the Internet infrastructure. We first characterize the Internet's topological behavior, and study the effectiveness of two widely used existing architectures: multi-homing and overlay networks. In particular, this work quantifies the extent to which the redundancy of the Internet is utilized, and identifies several problematic features of current multi-homing and overlay networks. This study will help researchers and operators to gain insights into the realistic behavior of multi-homing and overlay networks and use these insights to develop better network design and configuration. Inspired by these observations, we propose a framework for topology-aware overlay networks by incorporating topology considerations in designing overlay architectures. In this framework, we develop several heuristics for intelligent node placement by which we can ensure that each overlay node is as topologically and geographically diverse as possible. On top of this architecture, we adopt a single-hop routing mechanism for better scalability. This thesis presents measurement-based verification to conclude that the proposed single-hop overlay routing performs as well as multi-hop routing with respect to both availability and performance. Finally, we develop the architecture for FVPNs (Fault-tolerant Virtual Private Networks) as an example application. The main idea of this work is to pre-calculate and install a set of redundant, minimally overlapping paths between endpoints that can be used as backup routes when primary paths fail. With FVPNs, we would be able to provide seamless network fail-over to VPN clients, independent of underlying IP networks.
520 $a Overall, we believe that this study will help researchers and operators to understand the behavior of currently existing multi-homing and overlay networks, and give them some guidelines for designing and configuring the networks for better availability and performance.
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