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Traffic Engineering (TE) broadly relates to optimization of the performance of a network. The Overlay approach has been widely used by many service providers for Traffic Engineering in large Internet backbones. In this approach logical connections are set up between edge nodes to form a full mesh virtual network on top of the physical topology. Instead of overlaying IP routing over the logical virtual...
Packets have been increased continually with the development of network technology. A lot of methods have been given to improve the forwarding rate of the packets in the process of sending. And VOQ (Virtual Output Queuing) mode is belongs to one of these methods. The buffer queue has been established based on each output port which can solve this problem better about the throughput at the router....
Over the last decade, the Internet traffic demand has been increasing exponentially. Optical networks are ideal to accommodate this increasing traffic demand. Optical Circuit Switched Network (OCSN) is an optical network architecture that allows for automatic switching of new traffic requests. This network consists of optical cross connects (OXCs), access routers, backbone IP routers, wavelength division...
With the rapid advancements in wavelength-division multiplexing (WDM) technology, the capacity of optical fibers is increasing considerably. Traffic streams from users generally have a data-rate that is far less than the bandwidth of optical fibers or that of a lightpath in optical fibers. Traffic grooming can be used to group the traffic streams from various users and match to the data-rate of a...
The following topics are dealt with: network computing; performance optimization; failure management; cloud services; Web services; security; wireless sensor network; mobile ad hoc network; fault tolerance; overlay network; and telecommunication network routing.
Optical Burst Switching (OBS) network is emerging as a promising technology for next generation optical internet due to its suitability to carry bursty traffic, adapting to the technological constraints of all optical networks. A significant issue for next-generation networks is the ability to support a wide range of services for different types of applications. In order to support these services,...
With the explosive widespread of the Internet, many fundamental and popular Internet services such as WWW and e-mail are becoming more and more important and are indispensable for the human's social activities. As one technique to operate the systems reliably and efficiently, the way of introducing multihomed networks attracts much attention. However, conventional route selection mechanisms on multihomed...
To operate e-mail systems stably multihomed networks are well used. As an operation method on multihomed networks, we have proposed a dynamic route selection method considering status of networks. However, status of Mail Transfer Agents(MTAs) have not been considered in this method so that a heavily loaded MTA would be possibly selected. In this paper, we propose a new dynamic route selection method...
“Future Internet” must support complex network environments and service types. But nowadays routing devices cannot fulfill all the requests. So the concept of reconfigurable and programmable router has been proposed. In this paper, we proposed a novel task-driven dynamic reconfigurable router architecture. By sampling and monitoring the ingress and egress flow, also by tasks analysis and controlling,...
Research on congestion and phase transition, as an important aspect of network robustness, is helpful in guiding infrastructure construction, such as communication network, power grid, and so on. Based on related works, this paper sets up node model with different processing ability and limited capacity, proposes a traffic-awareness routing strategy with tunable control parameter. The optimal parameter...
Programmable optical networks are a key solution to high performance dynamic network services in Future Internet scenario. Modular router architecture which meets this concept is here defined and represented in a flexible software context, using Click! tools. Evaluation of logical performance and testing of physical characteristics of information forwarding within this framework is shown as feasible...
Internet has infiltrated into every aspect of our lives. Accurate topological modeling is essential to improve Internet performance in many research areas, such as protocols design, routing and searching algorithm, virus spreading protection, and node failure effect. Based on the power-law characteristic of AS-level Internet topology, a time-varying evolving Internet topology model is proposed by...
High speed Internet routers and switches require fast packet buffer to hold packets during times of congestion. These buffers usually use a memory hierarchy that consist of expensive but fast SRAM and cheap but slow DRAM to meet both, speed and capacity requirements. A challenge building these packet buffers is to provide deterministic bandwidth guarantee under any traffic condition. We propose a...
The future Internet is envisioned to host a large number of virtual networks managed by different operators sharing the same physical infrastructure. In such a scenario, an operator may not even own physical resources as such, but lease virtual resources to have their own virtual networks. While control-plane virtualization with several routing instances becomes common in equipments, the data plane...
Cloud services can greatly enhance the computing capability of mobile devices. Mobile users can rely on the cloud to perform computationally intensive operations such as searching, data mining, and multimedia processing. In this paper, we propose a new mobile cloud framework called MobiCloud. In addition to providing traditional computation services, MobiCloud also enhances the operation of the ad...
In view of the free content distribution in multicast on Internet, a mechanism for constructing the minimum cost multicast routing tree is proposed based on the theory of economic mechanism design. The minimum cost multicast tree can minimize the total transmission cost of the tree, minimize the links connecting the specified multicast group members and save the data transmitting cost and network...
This paper investigates congestion behavior of TCP and its variants TCP Reno, TCP NewReno, TCP Sack1, TCP Vegas, TCP Rbp and TCP Fack for AODV (Ad hoc Ondemand Distance Vector) and DSR (Dynamic Source Routing) routing protocols under persistent packet reordering attack through simulations in NS-2. It also proposes a solution to counter misinterpretation packet reordering with packet loss when retransmissions...
The demographic structure is changing in many countries which leads to “aging societies”. This introduces several new challenges, e.g., for provisioning of healthcare. Many research projects try to address some of the upcoming technical issues. In this paper we delineate the integration of a complex OSGi-based “Multi-Services-Home-Platform (MSHP)”, designed for versatile healthcare and monitoring...
The following topics are dealt with: data center; Internet networking; location sensing; RFID; clouds; grids; data streaming; querying; IP networks; system security; data management; network security; sensor networks; fault tolerance; routing; social networks; resource allocation; network coding; P2P; and wireless networks.
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