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The Vivaldi algorithm is known to be one of the most interesting approaches for the calculation of Internet coordinates. It is a fully distributed, light-weight and adaptive algorithm. Recent studies show that host coordinates in the Vivaldi system are not stable and are drifting rapidly even when the network delays do not change. In this paper we observe that, despite the instability of Vivaldi coordinates...
The use of multipath routing in overlay networks is a promising solution to improve performance and availability of Internet applications, without the replacement of the existing TCP/IP infrastructure. In this paper, we propose an approach to distribute data over multiple overlay paths that is able to improve Quality of Service (QoS) metrics, such as the data transfer time, loss, and throughput. By...
Good point set scanning-based self-learning worms can reach a stupendous propagation speed in virtue of the non-uniform vulnerable-host distribution than that of traditional worms. In order to combat self-learning worms, this paper proposes an interaction model. Using the interaction model, we obtain the basic reproduction number. The impact of different parameters of predators is studied. Simulation...
In this paper we will analyze and study a solar power plant of a linear parabolic type after introducing it. Monitoring system via the Internet is designed for the plant according to present parameters. Besides studying different dynamics of the Internet as important components we discuss the quality and effectiveness of each Internet parameter in order to explain the Internet behavior. According...
Considering the characteristics of the propagation of worm, we can analyze it by epidemic model. In this paper, considering that to re-assembly system and the use of anti-virus software will take a period of time, so we introduce a time-delay to describe this period of time. On this basis, we build a SIDRQ model for Internet worm virus propagation depended on the two-factor model. By using the theory...
Real time network applications require effective mechanisms for managing Internet traffic in order to avoid or at least limit the level of congestion. We propose, design and analyze an Active Queue Manager (AQM) for controlling jitter using robust control theory. We used an output feedback controller and this controller is based on discrete-time model of TCP. The natural properties of robust controller...
The end-to-end (e2e) arguments are of the most influential design principles for the Internet for about three decades, which basically suggest a design principle that puts the application-level functions at the network rather than inside the network as much as possible to simplify network design and implementation. In many cases moving some functions from a network edge into the network is often considered...
As the heterogeneity of Web clients increasing, the differentiated service (DifferSer) becomes an important issue especially for e-commerce Web site. Web caching as a key accelerator on the internet plays an important role in alleviating the client-perceived delay. Based on feedback control theory, this paper proposes an isolated cache model and designs a storage controller to achieve proportional...
We present a new multi-path routing methodology called MLB-routing based on multinomial logit model, which is well known as the random utility theory. The key concept of the study is to incorporate multiple paths from same origin to destination, and distribute packets followed by the multinomial logit type probability. Since MLB-routing is pure multi-path routing, it reduce the severe convergence...
Due to the rapid spreading nature of Internet worms, it is necessary to implement automatic mitigation on the Internet. Inspired by worm vaccinations, we propose a novel epidemic model which combines both vaccinations and dynamic quarantine methods, referred to as SEIQV model. Using SEIQV model, we obtain the basic reproduction number that governs whether or not a worm is extinct. The impact of different...
The popularity of video websites shows an enormous need for video sharing from individuals. We believe that P2P dissemination services, which leverage users' upload bandwidths, will become pervasive to enable high-quality video multicasting. Though several P2P systems were proposed, we argue that a next-generation one should minimize its peer lag so that concurrent subscribers can enjoy the same home-run...
Abstract- In this paper, we propose a power saving mechanism based on a simple moving average of the traffic rate in 802.3ad link aggregation. Two key components comprise the proposed mechanism: (1) a negotiation protocol for both nodes connected to an 802.3ad aggregated link and (2) an algorithm to estimate an appropriate number of active links to comprise the aggregated link in accordance with the...
In this paper, we present a system that optimally and dynamically allocates the available computing resources to virtual machines that support virtual collaboration environments. Such environments are emerging fast via on-line social networks, virtual worlds, and the "Web 3.0" or "collaborative Web" paradigm. We use a utility-based framework to differentiate the applications hosted...
Aiming to the problem of scalability caused by frequent route updates in current inter-domain routing system, this paper proposes a scalable inter-domain routing update mechanism to restrict the propagating scope of the update, called SIRUM. The autonomous system estimates the probability of that the communications of its neighbors are affected by the update according to the history information of...
Multipath inter-domain routing can solve many technical flaws which have been exposed in BGP, but the market-driven factors have more direct relationship with its deployment. In order to analyze impact of these market-driven elements, this paper established an optimization model for Internet service provider (ISP) revenues based on user's utility function. Then, the solution using Lagrange multiplier...
The server mirroring method has extensively used as the technology for contents delivery networks. Several mirror servers that serve same contents are located in a network, and an access is navigated to one of the mirror servers based on the delay time and the load balance. The location of the mirror servers with high reliability against a failure and small delay times of accesses is important. In...
As part of the resource allocation mechanisms, each router must implement some queuing discipline that governs how packets are buffered while waiting to be transmitted. Various queuing disciplines can be used to control which packets get transmitted (bandwidth allocation) and which packets get dropped (buffer space). The queuing discipline also affects the latency experienced by a packet, by determining...
With the increasing volume of VoIP, IPTV, and other real-time traffic on the Internet in recent years, service providers and operators demand tools to effectively detect and manage such traffic in their networks. However, many such applications are not easy to detect by using conventional approaches based on packet header and payload inspections since they may use random ports and data encryption...
With the increasing concern for global warming, the impact of Internet power consumption is gaining interest. In this paper, we explore, for the first time, the relationship between network robustness, performance and Internet power consumption. We first discuss such a relationship based on data collected from Internet sources. Next, we propose a modeling framework to size that relationship. It is...
Peer-to-Peer technology for content distribution on Internet including file sharing, live streaming, video on demand (VoD) has recently attracted significant attentions from academies and industries. Most of P2P applications only support single P2P service without data sharing between different services, such as popular P2P file downloading applications, which usually adopt single-service content...
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