As a network technology, ethernet flourished in low-cost, low-end markets. Simple to make and with open standards, many companies created products. The resulting improvement in price, performance, and market acceptance resulted in ethernet replacing the more established and sophisticated token-ring technology that dominated early large corporate LANs. As ethernet gets faster, accelerating from ...

Recently large scale distributed workstation LAN systems have been widely used in educational systems like educational centers in universities. In those systems, avoiding the large traffic caused by many users’ continuous operations is one of the most important problems. In this paper we modeled the users’ behavior in educational systems, and simulated and analyzed the traffic of the Ethernet L...

Users need high speed and low latency transmission for new applications. Since Ethernet is the dominant LAN technology, service providers wish to offer new Ethernet services as Layer 2 Virtual Private Network (L2VPN), to meet the requirements of these applications. MultiProtocol Label Switching (MPLS) is one of the most suitable technologies to deploy L3VPN and can also be used to realize L2VPN...

Although wireless networks are spreading quickly nowadays, we find wired Ethernet networks in most institutes, offices and homes. This way most PCs are connected to an Ethernet network. Ethernet networks can be eavesdropped. The act of eavesdropping a network is called sniffing. Sniffing an Ethernet network does not require any special hardware or particularly advanced computer knowledge. Many ...

Synchronous Ethernet at 100 Mb/s, a feature unique to the National Semiconductor DP83640, enables very accurate synchronization between IEEE 1588 Precision Time Protocol (PTP) systems connected via Ethernet. Using this feature, it is possible to maintain sub-nanosecond master to slave synchronization precision in PTP applications operating within required network topological constraints. It is ...

By splitting a large broadcast message into segments and broadcasting the segments in a pipelined fashion, pipelined broadcast can achieve high performance in many systems. In this paper, we investigate techniques for efficient pipelined broadcast on clusters connected by multiple Ethernet switches. Specifically, we develop algorithms for computing various contention-free broadcast trees that a...

The use of the low speed Foundation Fieldbus H1 (31.25kbits/s) has been fairly extensively documented. But an area of growing interest is that of Industrial Ethernet and now the Foundation Fieldbus HSE standard which builds on commercial off the shelf (COTS) Ethernet components. This paper examines the operation and structure of HSE with an emphasis on the lower layers (Ethernet and TCP/IP) and...

In order to realize real-time communication over Ethernet or fast Ethernet, one must be able to bound the medium access time within an acceptable limit. The multiple access nature of an Ethernet makes it impossible to guarantee a deterministic medium access time (hence packet delivery deadlines) to individual stations. However, one can bound the medium access time statistically by limiting the ...

Bob Metcalfe, who co-invented Ethernet networking technology, continues to take on new challenges as a computational engineer.

This article discusses Ethernet over PDH over SONET/SDH (EoPoS), EoPDH, and Ethernet over SONET/SDH. The emergence in the 1990s and the history of Next-Generation SONET/SDH (NGS) equipment are described. The article explains that NGS could not provide ubiquitous interoperability with legacy systems, and thus was not universally implemented. Finally, today's emerging technology, Ethernet over PD...