Multihoming Route Control


Multihoming is increasingly being employed by large enterprises and data centers to extract good performance and reliability from their ISP connections. Multihomed end networks today can employ a variety of route control products to optimize their Internet access performance and reliability. However, little is known about the tangible benefits that such products can offer the mechanisms they employ and their trade-offs. This paper makes two important contributions. First, we present a study of the potential improvements in Internet round-trip times (RTTs) and transfer speeds from employing multihoming route control.

Our analysis shows that multihoming to three or more ISPs and cleverly scheduling traffic across the ISPs can improve Internet RTTs and throughputs by up to 25% and 20%, respectively. However, a careful selection of ISPs is important to realize the performance improvements. Second, focusing on large enterprises, we propose and evaluate a wide-range of route control mechanisms and evaluate their design trade-offs. We implement the proposed schemes on a Linux-based Web proxy and perform a trace-based evaluation of their performance. We show that both passive and active measurement-based techniques are equally effective and could improve the Web response times of enterprise networks by up to 25% on average, compared to using a single ISP. We also outline several “best common practices” for the design of route control products.

Proposed System:

In this paper, we study mechanisms for improving Internet performance of enterprise networks via route control. Several research studies and products have considered other benefits of multihoming route control. In a study closely related to ours, the authors conduct trace-driven experiments to evaluate several design options using a commercial multihoming device. The evaluation focuses on the ability of several algorithms to balance load over multiple broadband-class links to provide service similar to a single higher-bandwidth link. The authors find that the effectiveness of hash-based link selection (i.e., hashing on packet header fields) in balancing load is comparable to load-based selection. Andersen et al. similarly consider various mechanisms for improving the reliability of Web access for DSL clients in.



• Jdk1.5
• Java Swing
• Windows 98 or more.


 Hard disk : 40 GB
 RAM : 128mb
 Processor : Pentium


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