1,721,341 research outputs found
Introduction
No full textThis book provides a throughout overview of IP over WDM technologies, as seen by a group of experts participating in the e-Photon/One+ and BONE networks of excellence of the VIth and VIIth framework programmes of the European Union. Both networks of excellence aimed at the integration of research in optical networks at the paneuropean level, with the creation of virtual centres of excellence in optical networks, technologies and services.
The working groups on Optical Core networks gathered about a hundred of researchers from more than 20 Universities and research institutes in Europe. From this community stemmed the idea of merging the various expertises in a book reporting the most advanced viewpoints on this broad topic
e-Photon ONE: Key Issues for Core Photonic Network Research
No full texte-Photon/ONe is a network of excellence focusing on optical networking and funded by the EU in the framework of the VI Framework Program. One of the instruments implemented in e-Photon/ONe are the Virtual Departments, working groups that gather researchers around big topics in optical networking to exchange results, promote joint research and identify new research topics. Virtual Department 1 is devoted to core optical networks and this paper reports the preliminary results and some comments on the first year of activity
Optical Core Networks Research in e-Photon/ONe
No full texte-Photon/ONe (E1) is a network of excellence focusing on optical networking and funded by the EU in the VI Framework Program. The main objective of the network of excellence is to promote the “integration” of the research of institutions with different expertises towards a common goal. One of the instruments implemented in E1 are the Virtual Departments (VDs), working groups that gather researchers around big topics in optical networking to exchange results, promote joint research and identify new topics. VD 1 is devoted to core optical networks and this paper wants to report the main results achieved at the end of the two years of the project, with particular focus on the joint research activities
Live migration of virtual network functions in cloud-based edge networks
No full textEmerging network paradigms, such as Software Defined Networking and Network Function Virtualization, represent the key enablers for efficient and cost-effective deployment and management of cloud-based edge networks, where a number of cooperating virtual machines can implement the tasks traditionally performed by expensive and disrupting network middleboxes. A key feature in such a scenario is the capability of live migrating a group of correlated virtual machines as a single entity representing a customer's profile. Multiple VM live migration is a topic that has not been thoroughly studied in the literature. This manuscript presents a relatively simple model that can be used to derive some performance indicators, such as the whole service downtime and the total migration time, and allows to properly design the cloud-based edge network. The model is used to compare some simple scheduling strategies for the VM migration and to provide guidelines to such implementation
IEEE NetSoft 2017 special issue: Softwarization sustaining a hyper-connected world: En route to 5G
No full textLive Migration of Virtualized Edge Networks: Analytical Modeling and Performance Evaluation
No full textFollowing the current evolution of virtualization techniques and software defined networking, edge networks might evolve towards a fully virtualized implementation by means of a number of virtual machines working cooperatively to perform the tasks of existing network middleboxes. In such a scenario the possibility to migrate groups of cooperating virtual machines as a whole set may be a very important feature, but what will be the performance issues of this solution? The live migration performance of multiple virtual machines working in some sort of correlated manner is a topic that has not been widely studied in the literature. This manuscript presents a model reasonably simple to implement that may be used to derive some performance indicators such as the whole service downtime and the total migration time. The model is used to compare some scheduling strategies for the migration and provide guidelines to such implementation
Which trade-off between time and wavelength congestion resolution in Optical Burst or Packet Switching?
No full textThis paper compares scheduling algorithms for congestion resolution in optical burst and/or packet switching networks, focusing on the effectiveness of wavelength and time multiplexing. The aim is to show whether it may be more convenient to invest in wavelength conversion or in some form of buffering when designing all optical switching elements
Advances on Optical Transport Technologies in the BONE Project
No full textThis paper reports a summary of the joint research activities currently ongoing within the BONE European Network of Excellence and related to network technologies and engineering topics
Frightened by Links
No full textRecently, attackers have discovered how to use hyperlinks to
implement a security attack on our personal computers, a ruse
called clickjacking (CJ). CJ doesn’t exploit a bug or a misconfigura-
tion that might exist in a system, as in many other typical attacks,
but instead exploits a Web page’s intrinsic capability to implement
hyperlinks, a well-known and widespread feature in which almost all of us trust, to date.
In this article, we describe a practical example of how an attacker
can implement a CJ attack and discuss possible countermeasures
Enabling the Optical Internet
No full textThis book provides a throughout overview of IP over WDM technologies, as seen by a group of experts participating in the e-Photon/One+ and BONE networks of excellence of the VIth and VIIth framework programmes of the European Union. Both networks of excellence aimed at the integration of research in optical networks at the paneuropean level, with the creation of virtual centres of excellence in optical networks, technologies and services.
The working groups on Optical Core networks gathered about a hundred of researchers from more than 20 Universities and research institutes in Europe. From this community stemmed the idea of merging the various expertises in a book reporting the most advanced viewpoints on this broad topic
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