The recent emergence of network interface cards (NICs) with diverse hardware features for I/O virtualization poses an important challenge for virtual machine environments, particularly in the area of system management. In this paper, we make the case for developing a highlevel network I/O virtualization management system that can translate user-relevant policy specifications into the hardware a...

Network virtualization allows for an abstraction between user and physical resources by letting a given physical infrastructure to be shared by multiple service providers. However, network virtualization presents some challenges, such as, efficient resource management, fast provisioning and scalability. By separating a network’s control logic from the underlying routers and switches, software d...

Virtualization is a term that refers to the abstraction of computer resources. The purpose of virtual computing environment is to improve resource utilization by providing a unified integrated operating platform for users and applications based on aggregation of heterogeneous and autonomous resources. More recently, virtualization at all levels (system, storage, and network) became important ag...

One of the major challenges Network Functions Virtualization paradigm is to properly deploy functions and services across network. In particular, current solutions for multi-datacenter service mapping present several restrictions in terms choice optimization models metrics. This lack flexibility ultimately leads sub-optimized mappings that do not meet (often conflicting) requirements all partie...

In order to build an efficient security architecture, previous studies have attempted to understand complex system architectures and message flows to detect various attack packets. However, the existing hardware-based single security architecture cannot efficiently handle a complex system structure. To solve this problem, we propose a software-defined networking (SDN) policy-based scheme for an...

Network virtualization technology allows multiple logical networks or network applications to run simultaneously on the underlying physical network. The virtual network mapping is the key method to realize network virtualization. Virtual tenant network (VTN) is a new technique for construction of multi-tenant network in software definition networking (SDN) network. VTN mapping mechanism is a co...

Providing QoS while optimizing the LTE network in a cost efficient manner is very challenging. Thus, radio scheduling is one of the most important functions in mobile broadband networks. The design of a mobile network radio scheduler holds several objectives that need to be satisfied, for example: the scheduler needs to maximize the radio performance by efficiently distributing the limited radi...

Network Functions Virtualization (NFV) allows the implementation in software of middleboxes traditionally available as specialized hardware. services can be implemented SFCs (Service Function Chains) based onvirtualization technologies that run on commodity Although most virtualized functions have classic middlebox functionalities (e.g. firewalls or intrusion detectors) NFV technology used to l...

Flexibility is often claimed as a competitive advantage when proposing new network designs. However, most proposals provide only qualitative arguments for their improved support of flexibility. Quantitative arguments vary a lot among different proposals. A general understanding for flexibility is not yet clearly defined, leaving it to the reader to draw the right conclusions based on background...