Network virtualization is recognized as an enabling technology for the future Internet. It aims
to overcome the resistance of the current Internet to architectural change. Application of this …

Today's businesses increasingly rely on cloud computing, which brings both great
opportunities and challenges. One of the critical challenges is resiliency: disruptions due to …

This paper highlights the complexity and challenges of providing reliable services in the
evolving communications infrastructure. The hurdles in providing end-to-end availability …

In the upcoming 5G networks and following the emerging software-defined
networking/network function virtualization (SDN/NFV) paradigm, demanded services will be …

In this paper, we investigate the issue of how to map an application request upon a substrate
network in such a way that the selected hosting node and link sets can provide not only …

In the Infrastructure as a Service (IaaS) paradigm of cloud computing, computational
resources are available for rent. Although it offers a cost efficient solution to virtual network …

This paper deals with the multiple link/node substrate failures that impact a multicast virtual
network (MVN) in which link recovery is not feasible and node migration is mandatory. A …

Overlay mapping provides a flexible and effective means of application deployment by
selecting a subset of nodes and links from the substrate-hosting network to meet, or even …

Virtual network embedding (VNE) is defined as the allocation of network resources to
multiple virtual networks (VNs) and is recognized to be a challenging task to perform …

Geographical correlated failures are threats that cause major interruptions and damage to
networking systems. To mitigate this rarely addressed challenge, this letter presents a novel …