This paper reports on experience with using semantically-enabled network resource models to construct an operational multi-domain networked infrastructure-as-a-service (NIaaS) testbed called ExoGENI, recently funded through NSF’s GENI project. A defining property of NIaaS is the deep integration of network provisioning functions alongside the more common storage and computation provisioning fun...

Although nodes in a network-virtualization infrastructure, which is called a virtualization node, usually contain a switch or a router with sophisticated and high-performance functions such as Ethernet switching, VLAN, and IP routing, most of such infrastructure functions cannot be reused as program components by slices. Accordingly, a method for providing such functions to slices on a virtuali...

The virtualization of Radio Access Networks (RANs) has been proposed as one of the important use cases of Network Function Virtualization (NFV). In Virtualized Radio Access Networks (VRANs), some functions from a Base Station (BS), such as those which make up the Base Band Unit (BBU), may be implemented in a shared infrastructure located at either a data center or distributed in network nodes. ...

Introduction The evolutionary change of telecommunications networks towards all-IP mechanisms has begun to collapse the traditional boundaries between IT infrastructure and telecommunications infrastructure. The IT datacenter has for years been the location for web-based services and applications. As the telecommunications environment has moved to all-IP, more and more of the functions of the n...

It has become the hot research issue that solves the bottleneck of resource management in the development of Internet through virtualization. However, there are the challenges of mobility management, resource management, and network overhead management in the virtualization of the Internet. First, based on the mobile Internet network construction and management mode, the mobile Internet virtual...

Network slicing is one of the most important features in 5G which enables a large variety services with diverse performance requirements by network virtualization. Traditionally, can be viewed as one-size-fits-all slice and its are bundled proprietary hardware supported telecom equipment providers. Now virtualization technology 5G, open networking software deployed flexibly on commodity to offe...

The Internet is currently facing many new challenges that require fundamental changes in network architecture and service models. However the current Internet lacks the flexibility to adopt innovations in network architecture and service provisioning. To fend off this ossification, network virtualization has been propounded as a key attribute of the future inter-networking paradigm and is expec...

Survivability in networks has always been an important issue and lately becomes for network virtualization. Network virtualization provides to run multiple virtual networks on a shared physical network. Since a failure in the physical network can affect several virtual resources, therefore, the survivability has to be considered in the embedding of the virtual resources. In this paper, we prese...

The virtualization and automation of network functions will be key features future high-speed railway networks, which have to provide dependable, safe, secure services. enable such as train control, integrity protection, shunting trackside monitoring maintenance virtualized run on general-purpose hardware. Network function combined with edge computing can deliver dynamic, low-latency, reliable ...