ions for Fault-Tolerant Wide-Area Network Programming Languages

A reliable multicast protocol ensures that all of the intended recipients of a message m that do not fail eventually deliver m. For example, consider the reliable multicast protocol of [10], and consider a message m, sent by process p1, that is intended to be delivered by p1, p2, and p3. We impose a directed spanning tree on these processes that is rooted at the message source. For example, for...

Experim.eiitation an wide area computer networks such as the Internet is dificult. One dificulty is the lack of experimental hosts for individual researches or research groups. We have developed a new approach to overcome this problem. Our approach i s t o emulate a remote site using one local machine, and to em.ulate a true Internet communication environmed in, a local area network, b y routin...

Experiments in Asynchronous Transfer Mode (ATM) wide area network (WAN) environments are discussed in this work. The lessons learned through practical experiences with ATM systems and how these can be applied to improving performance are presented. Factors ranging from the transport protocol to the equipment used and the network conditions are considered. With the recent deployment of the rst w...

Wide-area network (WAN) accelerators operate by compressing redundant network traffic from point-to-point communications, enabling higher effective bandwidth. Unfortunately, while network bandwidth is scarce and expensive in the developing world, current WAN accelerators are designed for enterprise use, and are a poor fit in these environments. We present Wanax, a WAN accelerator designed for d...

It is a challenge to design and implement a wide-area distributed hash table (DHT) which provides a storage service with high reliability. Many existing systems use replication to reach the goal of reliability. However, maintaining availability and consistency of the replicas becomes a major hurdle. A reliable storage system needs to recover lost and inconsistent replicas, but any recovery stra...

In this paper, we analyze the applicability of start-of-theart software DSM techniques for supporting a single shared address space in large, heterogeneous wide area network. The main contributions of this paper include following three aspects. First, based on the detail analysis, ten challenges related to implement single shared address space on heterogeneous, dynamic scenario are listed. Furt...

We examine the problem of evaluating the performance of TCP connections over wide area networks. Our approach combines experimental and analytic methods, and proceeds in three steps. First, we have used measurements taken over Renater to provide a basis for the chosen analytic model. This model turns out to be a shared bottleneck model, in which a finite buffer queue is shared by two connection...

There is a pressing need for Asynchronous Transfer Mode (ATM) traffic measurements to validate/verify a large number of simulation and analytical studies of ATM networks. In this paper, results from a measurement study of traffic on a wide area ATM network, the very High Speed Backbone Network Service (vBNS) network are reported. We illustrate how the traffic characteristics change as the traff...

Background traac models are fundamental to packet-level network simulation since the background traac impacts packet drop rates, queuing delays, end-to-end delay variation, and also determines available network bandwidth. In this paper, we present a statistical characterization of wide-area traac based on a week-long trace of packets exchanged between a large campus network, a statewide educati...