USENIX 2004 Annual Technical Conference, General Track Abstract
Pp. 113126 of the Proceedings
Multihoming Performance Benefits: An Experimental Evaluation of Practical Enterprise Strategies
Aditya Akella and Srinivasan Seshan, Carnegie Mellon University; Anees Shaikh, IBM T.J. Watson
Multihoming is increasingly being employed by large enterprises and
data centers as a mechanism to extract good performance from their
provider connections. Today, multihomed end-networks can employ a
variety of commercial route control products to optimize
performance over multiple ISP links. However, little is known about
the mechanisms employed by such products and their relative
In this paper, we propose and evaluate a wide range practical schemes
that could go into the design of a route control device and analyze
their trade-offs. We implement the proposed schemes on a Linux-based
Web proxy and perform a trace-based emulation of their relative
performance benefits. We show that both passive and active monitoring
based techniques are equally effective and could improve Web
performance by about 25% when compared to using a single
provider. Another key observation is that the conventional
practice of employing historical measurement samples to monitor and
predict ISP performance could, in fact, result in sub-optimal
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