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With the advent of multiple radio interfaces on modern smart phones, simultaneous transmission and reception of data through via both mobile networks and WiFi networks has gained a considerable attention as a cost-effective means for mobile data offloading. In this paper, we present a practical SDN-based data offloading framework based on a Femto-WiFi Integrated network. The proposed framework take...
A multi-rooted hierarchical tree topology has been widely adopted for many data center networks. It provides good utilization of resources as well as better performance, still fat tree Data Center Network has two limitations i.e traffic load balance and agility. This is because it is unable to support different traffic types efficiently and has no capacity to access all services by all servers. A...
Path load balancing is used for distributing workload across an array of paths to increase network reliability and optimize link utilization. However, it is not easy to realize the load balancing globally in traditional networks as the whole status of the network is difficult to obtain. To address this problem, we propose the Fuzzy Synthetic Evaluation Mechanism (FSEM), a path load balancing solution...
This demo deals with a new orchestrator, the OFVN controller, specifically designed, according to the SDN principles, to deliver Cloud services with IT and network resources requirements.
At present, data centers consume a considerable percentage of the worldwide produced electrical energy, equivalent to the electrical production of 26 nuclear power plants, and such energy demand is growing at fast pace due to the ever increasing data volumes to be processed, stored and accessed every day in the modern grid and cloud infrastructures. Such energy consumption growth scenario is clearly...
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 growth of Internet traffic has led to an increase in energy consumption by network equipment such as routers and switches. Consequently, energy consumption is becoming a key environmental, social, political and cost issue. Focusing on energy consumption by Internet Service Provider networks, the energy bottleneck is routers. Thus, it is imperative for us to reduce the energy consumption of routers...
More and more network applications have appeared in recent years. Government, university, industry and individual Internet users and network services need more bandwidth and various network applications. Many new network protocols are proposed so that it is now becoming harder to manage the network. In the conditional network, every network protocol uses the fixed port, the so-called well-known port...
As passive optical networks (PON) are increasingly deployed to provide high speed Internet access, it is important to understand their fundamental traffic capacity limits. The paper discusses performance models applicable to wavelength division multiplexing (WDM) EPONs and GPONs under the assumption that users access the fibre via optical network units equipped with tunable transmitters. The considered...
Time-sensitive multimedia streaming application is becoming a promising service in 4G scenario now, thereinto, end-to-end delay is the crux. Two issues should be deserved more attention at the heterogeneous wireless access routers, i.e.: timely response for real-time streaming traffics and fairness among other traffics. Considering resource limitation of mobile terminal, polling system should be one...
A server farm is examined, where a number of servers are used to offer a service to impatient customers. Every completed request generates a certain amount of profit, running servers consume electricity for power and cooling, while waiting customers might leave the system before receiving service if they experience excessive delays. A dynamic allocation policy aiming at satisfying the conflicting...
This paper shows a new DNS attack that hijacks DNS requests by frequently injecting fake DNS server, and then network systems communicate with wrong destinations. This type of attack is detectable by neither the IDS nor any anti spoofing software.
Network virtualization has been proposed as a diversifying attribute of the future inter-networking paradigm. By allowing multiple heterogeneous network architectures to cohabit on a shared physical substrate, network virtualization provides flexibility, promotes diversity, and promises increased manageability. One of the most fundamental issues in network virtualization is to support multiple virtual...
Ethernet has grown from its roots in LANs to cover large scale networks. A set of projects plan to enhance the features of Ethernet to be with carrier grade features like high availability, fault management, and resiliency found in other circuit switched technologies. Ethernet has been architected and designed for a shared medium, it inherently handles broadcast and multicast traffic by flooding of...
In this article and as a generalization to our work in Fayza et al. (2003), we present a case study of ATM buffers with batch arrivals, geometric service time and priority scheduling. Packets belongs to two classes, class-1 packets represents real time traffics which is delay sensitive but loss insensitive, and class-2 packets represents non real time traffics which is delay insensitive but loss sensitive...
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.
We have proposed a design and analysis tool for network topology, where it combined a custom-made design/redesign methodology and a commercial simulation program, OPNET modeler. Here we assume an existing network with C clusters as a reconfigurable architecture and we have proposed a number of redesign techniques to reduce the extra-traffic and maximize the intra-traffic, the traffic within the clusters...
Multistage Interconnection Networks (MINs) provide efficient communication resources between network components in an appealing cost/performance relation. Consequently, they have been widely used on Internet connections such as ATM and gigabit Ethernet switches, terabit routers as well as for interconnecting parallel systems. In this paper a novel analytical method for providing performance evaluation...
It is pivotal to achieve delay-based fairness when users access the same content, especially in real-time services, from content-replicated servers based upon the client-server communication model. To resolve this issue, this letter proposes a novel server selection method of providing users with delay-based fairness from all the corresponding servers by applying the delay-based dynamic deficit round...
Because wireless stations independently select which access points to camp on, the total wireless station traffic on all available IEEE 802.11 network APs might be unevenly distributed. This load-balancing problem can lead to overloading and network congestion. This survey examines the problem, along with state-of-the-art network- and wireless-station-based solutions. It also presents experimental...
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