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The article aims to show the implementation of a Web system for managing a remote access laboratory support for the practical classes of subjects involving computer networks and telecommunications, including the organization of the physical structure and development of a management system. With the implementation, it was possible to maximize the use of equipment among all professors of disciplines...
Traditional physical networking components form the basis of the Internet and the backbone of most enterprise networks. Virtual networking is essential in connecting virtual machines among themselves and to the physical world in any virtualization platform. In order to produce work ready IT graduates with practical, hands-on networking experience, it is desirable to provide an integrated virtual and...
In order to meet the needs for the curriculum reform of Electronic Engineering Department of Tsinghua University, we constructed routing and switching experimental platform using the control network technology based on ZTE's switches and three-layer routers. The platform supports the computer network experiment course and practice in open extracurricular for undergraduate.
Polling systems have an important role in performance studies of polling mechanisms in communication and computer networks, where several terminals or users compete for access to a shared resource. In this study we present a polling system with finite queues and investigate its performance. We use the state of the art Markov chain technique to reveal the performance measures of the considered polling...
Data centers are becoming increasingly popular for a wide variety of applications such as search, gaming, email and so on. The complex wiring issues in data centers have motivated us to consider a wireless solution for data centers which meets the design goals of a typical data center network while providing the additional benefit of flexibility in the network. The wireless data center is based on...
We introduce a high-fidelity simulation model to evaluate the power consumption of computer networks derived from measured data on routers. To this end, we design and use a power consumption profiling system to parameterize the electrical power consumption of network elements in terms of data traffic. A model validation done by comparing simulation outputs for a test case with actual measurements...
p-Cycles present a very interesting approach to building survivable networks. They have been widely studied for unicast and recently for multicast traffic. For anycast traffic almost no research have been done. We will discuss a new p-cycles version, called Anycast-Protecting p-Cycles, introduced in our previous paper. We provide detailed description of some new properties, ILP models, results and...
The networking infrastructure is becoming a growing portion of the energy footprint in data centers as well as information technology in general. In this paper, we evaluate energy management strategies for network switches. We begin by performing a lifecycle assessment of existing switches in a data center, and find that the use phase of the lifecycle dominates. We then parametrically examine various...
No single layers and technologies can construct a large scale network, thus networks are organized as a physical structure of variety of layers. For example in data center, networks are typically consists of access and aggregation L2 switches and core L2/L3 switches networks. However, new trends for server virtualization can change traffic dynamics, i.e. virtualized host can be located at any locations...
This article offers the original method and algorithms of packages routing from one source to many addressees by files transfer of greater sizes. The method is named systolic routing which provides extremely high speed for transfer of data packages in switching packages networks.
The growth of Internet has redefined various areas of entertainment, in particular, that of music. Today, real-time Internet music streaming Real audio and MP3 are regularly enjoyed by millions of listeners. This paper presents a human centered multimedia audio (audio information) retrieval system over a computer network. This work has also taken care of playing of audio continuously without any interrupt...
Billions of dollars of electricity are being used to keep idle or unused network hosts fully powered-on only to maintain their network presence. We investigate how a network connectivity proxy (NCP) could enable significant energy savings by allowing idle hosts to enter a low-power sleep state and still maintain full network presence. An NCP must handle ARP, ICMP, DHCP, and other low-level network...
For practical laboratory exercises of networking subjects it proved efficient to interconnect laboratories of multiple institutions to build large-scale virtual education environment, which may be accessible as part of common e-learning system. In the article we describe various approaches of creation of such distributed virtual topologies and experience with technical solutions tested in real e-learning...
The research community is interested in finding effective methods to detect network traffic anomalies such as the propagation of a new worm, and to raise alarm in time. In this paper we research the principle that the number of network traffic can affect self-similarity of network traffics, and analyze the variety of self-similarity caused by abnormal network traffic. We propose a network traffic...
This paper presents a reliable, fast and simple system to detect and recover faults in computer networks at control center of power automation system. There is no way to get the information of the remote devices when networked system at control center is failed. The proposed system makes use of the insertion of smart switch (SS) into the ordinary automation system of power utilities to keep the network...
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