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Elastic Optical Networks (EONs) have the potential to improve the fiber spectrum utilization by allocating spectrum resources to multiple traffic requests proportionally to the amount of carried traffic. However, achieving high spectrum utilization in this elastic scenario is hindered by the resulting spectrum fragmentation. A number of studies have addressed and made attempts to mitigate spectrum...
Routing and Spectrum Assignment (RSA) algorithms play a key role in achieving good spectrum utilization in Elastic Optical Networks (EONs). A metric that is often used to evaluate RSA algorithms is the overall blocking probability experienced by circuit requests. In a previous study, the authors introduced an additional performance indicator that can be used to quantify the level of fairness (or lack...
Elastic Optical Networks (EONs) enable optical circuits to be assigned distinct numbers of spectrum slices. Individual circuits can then be assigned an optimal number of slices to best match their target transmission rates. A well-known drawback of EONs is spectrum fragmentation and its resulting uneven blocking probability, which circuit requests experience when the available spectrum slices in the...
Routing and Spectrum Allocation (RSA) algorithms are used to compute both routing and spectrum allocation of connection demands in Elastic Optical Networks (EONs). A number of RSA algorithms have been proposed. Their performance is usually measured in terms of overall blocking probability. In this paper the authors pursue an additional performance indicator that is introduced to quantify the level...
The classical Internet has confronted many drawbacks in terms of network security, scalability, and performance, although it has strongly influenced the development and evolution of diverse network technologies, applications, and services. Therefore, new innovative research on the Future Internet has been performed to resolve the inherent weaknesses of the traditional Internet, which, in turn, requires...
Offering end-to-end optical circuit switching has the advantage of carrying a large fraction of the overall network traffic using relatively low-cost and low-power optical equipment, when compared to IP routers. For an end-to-end circuit to be successfully established, the following conditions must be simultaneously met: a transmitter must be available at the sender, a receiver must be available at...
An increasing number of users perform large transfers over data networks. While, for the most part, these transfers are currently performed over the IP network, a number of studies advocate the use of end-to-end optical circuits to support these resource-consuming jobs. One of the major advantages is the ability to carry a large fraction of the overall network traffic using the relatively lower-cost...
Future Internet is a new infrastructure to support new services not provided by the existing Internet. These new services can be Virtualization, Programmability and Federation. For those services we deployed a Future Internet testbed between KREONET and GENI (USA) as a foundation of new concept of Internet.
Recently, people move their interest from developing single middleware to integration of those middleware and operations. One way to integrate grid middleware and provide easy to use environment to application research scientists is using a portal. In this paper, we discuss how to develop a wind tunnel simulation service that will be used by aerospace community by using this portal technology. Two...
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