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Peer-to-peer (P2P) networks are in the spotlight due to the wide-spreading file-sharing applications. Many file-distributing algorithms have been suggested and implemented. The various solutions need to cope with a heterogeneous and unstable environment, where peers can arrive and depart at a high rate (churn). Sometimes cooperation cannot be assumed. These issues make the structured attitude less...
The increasingly popular online hosting systems are designed to provide versatile and convenient platforms for content hosting and sharing. To guarantee adequate levels of service quality while conserving prohibitive server costs, such systems are often designed to integrate peer bandwidth contributions with strategic server resource provisioning in a complementary and transparent manner. This paper...
Open, decentralized networks such as Internet are increasingly heterogeneous and dynamic. Applications running over such networks must be able to cope with resource restrictions and operate under the most diverse conditions. Providing multiple services over the same network has enormous effect on scalability, performances and cost of this network. Selecting a proper concept of network for mass market...
Packets are the basic unit of data transfer in the Internet. Each packet essentially consists of a header that carries network control information apart from the payload part that contains useful information meant for transmission. The size of the header depends on the associated protocol and these headers are an overhead in terms of processing and bandwidth utilization. As packet size decreases,...
The emergence of peer-to-peer (P2P) applications has posed a threat to the operating cost of Internet Service Providers (ISPs) due to the large amount of inter-ISP traffic generated. The problem stems from the mismatch between the P2P overlay network formed randomly and the underlying physical network. Recently, BitTorrent has attracted enormous users by its convenience of large-scale content distribution...
Network architectures with overlapping cells from more high altitude platforms may provide more reliable services with broader bandwidths than architectures with a single high altitude platform if an adequate load balancing mechanism is in place. Some network architectures and load balancing mechanisms have been proposed recently, but still there is an open space for further improvements in this area...
In recent years, with the information increasing rapidly, WDM communication network traffic is paid more and more attentions. Traffic engineering (TE) is an interesting application in IP-based networks. TE main objective is to optimize the performance of a network through an efficient utilization of network resources. This paper discusses traffic technology and load balancing in optical networks....
As communication networking becomes vital to people's digital life. Also, various communication protocols are evolved in e-service for e-business models. The main push factor behind this network evolution is the real time transfer of multimedia information, such as, audio, image and video. Several protocols, such as RTP (real time protocol) and RTCP (real time control protocol), are developed to facilitate...
In the Internet, with many competing networks each trying to optimise its own bandwidth, a stub network has limited knowledge about user demands, available network resources and routing policies of other networks. This uncertainty makes the task of interdomain traffic engineering for a stub network very challenging. The basic aim of a stub network connected to multiple ISPs (multihomed) is to load...
In this paper, we present a method for providing quality of service using bandwidth limitation. In practical demonstration of the idea, we have used an algorithm for packet queuing, a technique applicable in a setup where the systems are connected to the Internet through a server and the server receives and distributes all the packets requested from the all the users in the network. The idea basically...
We present a new method for managing bandwidth which is allocated among several services. In implementation of the idea, we have used a queuing algorithm, a packet queuing technique applicable in a setup where the systems are connected to the Internet through a server (running our module) and the server receives all the packets requested from the all the services. The technique basically involves...
Internet service providers have to provision network resources to optimize bandwidth utilization. Dynamic routing protocols take traffic variations into account to control the load distribution. Multipath routing protocols attempt to take advantage of the path diversity to bring network robustness and reliability. Indeed, with a specific traffic engineering policy, they enable load balancing across...
Network congestion control is a critical issue, especially in the growing size, demand, and speed (bandwidth) of the increasingly integrated services networks. Designing effective congestion control strategies for these networks is a challenge because of the complexity of the structure of the networks, nature of the services supported, and the variety of the dynamic parameters involved. Congestion...
This paper describes flexible resource allocation and provision methods for bandwidth on demand and networks on demand in the new Japanese academic backbone network, called SINET3. SINET3 has provided a wide variety of network services such as IPv4/IPv6 dual stack, L3VPN, L2VPN/VPLS, and L1VPN services for the research and education community and started layer-1 bandwidth-on-demand services in February...
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