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The workload of the global Internet is dominated by the Hypertext Transfer Protocol (HTTP), an application protocol used by World Wide Web clients and servers. Simulation studies of IP networks will require a model of the traSJic putterns of the World Wide Web, in order to investigate the effects of this increasingly popular application. We have developed(More)
— Tools such as pathchar, clink, and pchar attempt to measure the capacity of every Layer-3 (L3) hop in a network path. These tools use the same underlying measurement methodology, which we refer to as Variable Packet Size (VPS) probing. The key assumption in VPS is that each L3 hop along a path increases the delay of a packet by a " serialization latency "(More)
Many future applications will require guarantees on network performance, such as bounds on throughput, delay, delay jitter, and reliability. To address this need, the Tenet Group at the University of California at Berkeley has designed, simulated, and implemented a suite of network protocols to support real-time channels (network connections with(More)
Starting from Jacobson's pathchar [1], there has been a significant interest in techniques that can measure the link capacities , a.k.a, link rates, of an IP path. Follow-up research papers and variations ofpathchar are Downey's clink [2], Mah's pchar [3], and Lai's tailgating technique in nettimer [4]. The motivation for such per-hop capacity estimation(More)
A common shortcoming of many network measurement programs is that their metrics are not expressed in terms directly applicable to applications and users. To address this problem, we have developed the IP Benchmark (IPB), a benchmark program that synthetically generates traffic to simulate the network activity of common Internet applications. It measures the(More)
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