Standardized in 2004, EPON has emerged as a highly successful technology – 3 million lines has been deployed in less than 2 years. The next generation of EPON will bring 10 Gb/s bandwidth to access networks. 1 Brief history of EPON In 2003, the Ethernet protocol celebrated its 30th birthday. All these years it has been adapting and evolving to become the very inexpensive and ubiquitous networki...

The way conventional Ethernet is used today differs in two aspects from how dedicated system area networks are used. Firstly, dedicated system area networks are lossless and only drop frames when bit errors occur, while conventional Ethernet drop frames whenever congestion occur. Secondly, these networks are either deadlock free or use mechanisms which avoids deadlock situations, while still us...

Ethernet is currently explored as the upcoming network standard for distributed control applications in many different industries such as automotive, avionics and industrial automation. It offers higher performance and flexibility over traditional control bus systems such as CAN and ProfiBus. For distributed control applications, predictable communication timing is highly important which can be...

In this paper a sensitivity analysis of the load on an ethernet network is presented. Aim is to determine which parameters that characterize the workload have an influence on the performance of an ethernet segment and to get an idea about the magnitude of this influence. The performance ofthe network is indicated by the wai ti ng ti me and the access del ay. The performance is measured using a ...

A half-duplex repeater is the least-cost method for connecting multiple hosts to an IEEE 802.3 Ethernet LAN. However, if we increase the data rate from 10 Mb/s Ethernet to 100 Mb/s Fast Ethernet, shared access via CSMA/CD becomes less efficient because of the resulting increase in size of the collision fragments. For example, in a typical star-wired single-repeater network with a diameter of 20...

Nowadays, high computing demands are often tackled by clusters of computers, each of which is basically an assembly of a growing number of CPU cores and main memory; these nodes are connected by some kind of communication network. With the growing speed and number of CPU cores, the network becomes a severe bottleneck limiting overall cluster performance. High-speed interconnects like SCI and Do...

Most modern parallel computers are clusters using Myrinet or Ethernet communication networks. Several studies have been published comparing the performance of these two networks for parallel computing, however these focus on average performance, and do not address the distributions of communication times, which can have long tails due to contention effects. In the case of Ethernet with TCP, ret...

The economics and familiarity of Ethernet technology is motivating the vision of wide-scale adoption of Metro Ethernet Networks (MEN). Despite the progress made by the community on additional Ethernet standardization and commercialization of the first generation of MEN, the fundamental technology does not meet the expectations that carriers have traditionally held in terms of network resiliency...

Recently, the Full-Duplex Repeater (FDR) has been proposed as an alternative to half-duplex operation using CSMA/CD for controlling shared access to Gigabit Ethernet. In this paper, the basic FDR architecture is described and two extensions for traffic control are introduced. Using simulation methods, the performance of the Gigabit FDR is studied under different topologies and population sizes ...