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The scale of the Software-Defined Network (SDN) Controller design problem has become apparent with the expansion of SDN deployments. Initial SDN deployments were small-scale, single controller environments for research and usecase testing. Today, enterprise deployments requiring multiple controllers are gathering momentum e.g. Google’s backbone network, Microsoft’s public cloud, and NTT’s edge gateway...
A network hypervisor is demonstrated. The Virtual Network Controller dynamically deploys multi-tenant virtual networks on top of multi-technology transport networks. It provides an abstract view of each virtual network and enables its control through an independent SDN controller.
Several Network Operating Systems have been proposed in the last few years for Software Defined Networks; however, only few of them are offering resiliency, scalability and high availability required for production environments. In our demonstration we present a geographically distributed SDN Control Plane, called ICONA, build on top of the Open Networking Operating System (ONOS) and designed to meet...
The rise of software-defined networks in recent years has allowed unprecedented agility in network configuration and orchestration. As physical links and configurations become virtualised, this has created many opportunities for dynamic and transparent deployment of services. This however, opens up a potential attack surface for new forms of attack. Thus, with the combination of SDN elements abstracting...
Network Function Virtualization (NFV) is an emerging solution that aims at improving the flexibility, the efficiency and the manageability of networks, by leveraging virtualization and cloud computing technologies to run network appliances in software. However, the “softwarization” of network functions raises reliability concerns, as they will be exposed to faults in commodity hardware and software...
The notion of Software-Defined Networking (SDN) has already been introduced into cloud datacenter networks for provisioning virtual network environment. Network virtualization of today is generally achieved by L2-in-L3 tunneling protocols like VXLAN (Virtual eXtensible LAN) and NVGRE (Network Virtualization using Generic Routing Encapsulation) in public cloud datacenters. Some leading production packages...
This paper presents VLM+, a Virtual Link (VL) Embedding algorithm supporting Quality of Service (QoS). VLM+ has been developed evolving its Mixed Integer Programming (MIP) based Virtual Link Mapping algorithm precursor (VLM), whose analytical model has been enhanced including the ability to fulfill VL end-to-end QoS requirements and to prioritise VL requests according to their QoS class or revenue...
Virtual machine migration is an essential capability that supports cloud service elasticity. However, there is a big concern on what happens to the security policy associated with the migrated machine. Recently, Software Defined Networking (SDN) has gained momentum in both research and industry. It has shown great potential to be used in cloud data centers, particularly for inter-domains migration...
Traditional network monitoring involving packet capturing or flow sampling has many challenges such as scalability, accuracy and availability of processing resource when networks become large-scale, high-speed and heterogeneous. SDN is a promising approach to address these challenges, but each SDN switch has it's own capacity limitation, such as it's cache memory called TCAM, and thus it needs coordination...
The lessons already learned from the existing protocols operation are taken into deep consideration during the standardization activities of the potential technologies opted for the future 5th Generation mobile networks. Prior research on wireless technologies in general has clearly shown the need for open programmable experimental facilities which can be used for the implementation and evaluation...
Virtualization is seen as a killer application of software defined networking (SDN). Virtual radio access network (RAN) is an emerging concept for 5G and beyond 5G networks and it is gaining increased attention from both academia and industry alike. Moreover, due to the current telecommunication trend of increasing network traffic and decreasing revenue, telecom operators all over the world are looking...
The OpenFlow (OF) protocol is widely used in Software Defined Networking (SDN) to realize the communication between the controller and forwarding devices. OF allows great flexibility in managing traffic flows. However, OF alone is not enough to build more complex SDN services that require complete control and management of the data plane (e.g. configurations of ports, queues, etc.). The current work...
Network anti-virus (AV) solutions are the first line of defense against malicious software. Traditional proxy-based network anti-virus solutions with store-scan-forward techniques decrease network performance and consume massive amounts of memory. Therefore, traditional solutions are not easily adaptable for Network Function Virtualization (NFV). This paper details the work on a novel virus scanning...
Network function virtualization (NFV) is a new networking paradigm that virtualizes single network functions. NFV introduces several advantages compared to classical approaches, such as the dynamic provisioning of functionality or the implementation of scalable and reliable services (e.g., adding a new instance to support demands). NFV also allows the deployment of security controls, like firewalls...
In current generation LTE networks, user mobility leads to high levels of signaling traffic from the eNodeB (Evolved Node B) to the Evolved Packet Core (EPC) for maintaining the GPRS Tunneling Protocol (GTP) and Proxy Mobile IPv6 (PMIPv6) tunnel. Further, the presence of Packet Gateway (PGW) at the network edge introduces additional delay for every signaling procedure. In this paper, we propose an...
This work extends NFV paradigm to transport networks, known as Transport NFV. This paper presents a detailed overview of the SDN/NFV services that are offered on top of the Cloud Computing platform and transport network of the ADRENALINE Testbed. On the one hand, we propose a generic architecture for SDN/NFV services deployed over multi-domain transport networks and distributed data centers. On the...
To improve reliability and performance of Software Defined Networking (SDN) architectures, a number of recent efforts have proposed a logically centralized but physically distributed controller design that overcomes the bottleneck introduced by a single physical controller. Despite these advances, two key problems still persist. First, the task of controlling the host network and the task of controlling...
Research on accelerating big-data applications can be divided into job scheduling and flow scheduling. Job scheduling focuses on the timely and spacial placement of jobs on execution units. Flow scheduling, on the other hand, concentrates on routing of flows originating from actively running jobs. Although both job scheduling and flow scheduling work on accelerating big-data applications, their view...
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