The increasing popularity of Cloud Computing is leading to the emergence of large virtualized data centers hosting increasingly complex and dynamic IT systems and services. Over the past decade, the efficient sharing of computational resources through virtualization has been subject to intensive research, while network management in cloud data centers has received less attention. A variety of n...

The current internet is commonly perceived as being too inflexible. Network Virtualization has been recognized lately as a method to overcome these limitations. Previous implementations of Virtual Network (VN) deployment software either provided limited access to the network layer (like PlanetLab), or focused only on specific application scenarios (like VNUML or VLAN). A first step toward the e...

In recent years, there has been a rapid growth in the adoption of virtual machine technology in data centers and cluster environments. This trend towards server virtualization is driven by two main factors: the savings in hardware cost that can be achieved through the use of virtualization, and the increased flexibility in the management of hardware resources in a cluster environment. An import...

The efficiency of spectrum in mobile and wireless network might be achieved by exploiting the technical specification within the spectrum itself, and by introducing the new technical mechanism called network virtualization. The latter emphasises the enhancement of control and user planes of the network rather than utilise the spectrum. This research work focuses on the network virtualization, p...

Network virtualization provides the ability to run multiple concurrent virtual networks over a shared substrate. However, it is challenging to design such a platform to host multiple heterogenous and often highly customized virtual networks. Not only high degree of flexibility is desired for virtual networks to customize their functions, fast packet forwarding is also required. This paper prese...

Network Virtualization represents one of the most promising approach to unlock innovation in current network technologies. This paper presents AiroLAB, a wireless network virtualization solution aimed at providing Wireless Internet Service Providers with an effective tool to support experimental testing of novel network–level solutions on production networks. In the paper, the design choices wh...

Due to limitations of today’s widely-deployed commercial networks, some end-user applications are only possible through, or greatly improved by execution on virtualized networks that have been enhanced or idealized in a way which specifically supports the application. This paper describes US Ignite and the advantages provided to US Ignite end-user applications running on virtual networks which ...

Network function virtualization (NFV) and Software Defined Networking (SDN) are widely acknowledged as potential disruptive technologies of next generation computer networks. The network operators are pushing the frontiers of NFV to reduce operational expenditure (OPEX) and capital expenditure (CAPEX). Network vendors and academic researchers look upon NFV as an opportunity to speed up innovati...