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Software-Defined Networks (SDN) is an emerging area that promises to change the way we design, build, and operate network architecture. It tends to shift from traditional network architecture of proprietary based to open and programmable network architecture. However, this new innovative and improved technology also brings another security burden into the network architecture, with existing and emerging...
Virtualization is an essential step before a bare-metal data center being ready for commercial usage, because it bridges the foreground interface for cloud tenants and the background resource management on underlying infrastructures. A concept at the heart of the foreground is multi-tenancy, which deals with logical isolation of shared virtual computing, storage, and network resources and provides...
Rescue teams require information about victims in need of help rapidly to improve survival rate at the time of disaster. Emergency Rescue Information Sharing System gathers and provides the information with a framework called METHANE in addition to efficient wireless link's selection using OpenFlow. However, it is difficult for those who rescue the victims except for the rescue teams to recognize...
In the traditional Publish/Subscribe (Pub/Sub) paradigm, most of the responsibilities lie with the broker, thus making it burdened. It also takes a considerable amount of time to first route the publications and subscriptions towards the broker, and then to further route the notifications to the subscribers. This leads to delays in data delivery. Besides delay and bandwidth consumption, the number...
In this paper we show an SDN controller implementation named Basebox that listens to Linux Netlink and translates commands into OpenFlow rules to control a domain of OF-DPA based switches in an OpenStack cluster.
This article is about the impact of TCP-window size in the numerical characteristics of intervals between packets We consider raw moments from the first to third of the time intervals. Experiments were carried out on the virtual system deployed using OpenNebula platform on physical servers. We consider two cases: software defined network with OpenFlow protocol support and traditional network without...
Current network protocols are exceedingly strict, making the administrative duties of network providers difficult. The switches that control a network rely on stringent definitions, usually defined by the company who designed the switch, with which they can forward packets. Software Defined Networking (SDN) is a concept which allows control over the operations of a switch via remote software applications...
Recently, in cloud computing, the power consumption is one of the most important topics. The power consumption of ARM processor is smaller than popular x86 processors. However, because of no virtualization technology, ARM cannot be applied to cloud computing. ARM is suited for low power cloud, which does not virtualize hardware. However, even if low power cloud, network must be virtualized to provide...
Virtualization is an essential step before a bare-metal data center being ready for commercial usage, because it bridges the foreground interface for cloud tenants and the background resource management on underlying infrastructures. A concept at the heart of the foreground is multi-tenancy, which deals with logical isolation of shared virtual computing, storage, and network resources and provides...
This paper shows the effectiveness of the system that controls the network route based on social information. An automatic route control is performed with the network virtualization node FLARE that uses VLAN coupling between each base of the wide area network test bed called JGN-X as a platform.
Distributed Denial of Service attack (DDoS) is one of the severe security problems in data centers. In present times, data center operators adopt several hardware based dedicated measures for detection and mitigation of such attacks. It is a challenging task always to detect and mitigate DDoS attacks completely. Software Defined Network (SDN) provides a central control over the network which helps...
These days our networks have to handle large amount of traffic, serve thousands of clients. It is very difficult for a single server to handle such huge load. The solution is to use multiple servers with load balancer acting as a front end. The clients will send the requests to the load balancer. The load balancer will forward the client requests to different servers depending upon load balancing...
The dynamic demilitarized zone (DMZ) model considers both network performance and security, and dynamically responds to traffic demands in real-time. We realize this dynamic DMZ model based on an OpenFlow-enabled switch and controller. In our approach, the controller detects flows with bit rate greater than a given threshold (elephant flows) and controls the switch in order to reroute elephant flows...
Multicast is a technology that allows transmission of data efficiently from one server to multiple recipients at once. To use this technology, required devices and systems that support multicast such as router/switch that supports IGMP. Software Defined Networking (SDN) and OpenFlow has emerged as a new paradigm in networking. With SDN, network is no longer closed, proprietary, and difficult to program...
Software-defined networking and Network Function Virtualization (NFV) have simplified the coordination efforts for “service chaining.” Consequently, network services such as firewall, load balancing, etc. may be service chained in the forwarding (data) plane for specific applications and/or traffic. A specific case is for the firewall rules that depend on deep packet inspection for application identification...
In this paper, we implement an Open Flow based fully functional 802.1X access network and an IP based cognitive access network which are interconnected as edge networks to our SDN core. We realize seamless mobility in the WLAN domain and mobility between WLAN and Cognitive networks for the clients with dual band support. The pre-installed flows on the backbone aggregate traffic from access networks...
Path load balancing is used for distributing workload across an array of paths to increase network reliability and optimize link utilization. However, it is not easy to realize the load balancing globally in traditional networks as the whole status of the network is difficult to obtain. To address this problem, we propose the Fuzzy Synthetic Evaluation Mechanism (FSEM), a path load balancing solution...
In this paper, we propose a platform named EmuCloud, aiming to provide a test environment for SDN with high fidelity and low cost. EmuCloud is based on IaaS cloud, and the key idea of the platform is to extend the abstract networking resources to provide virtual openflow switch, and combine this new abstraction with existing service (such as computing, storage, authentication, etc.) seamlessly. Compared...
This demo deals with a new orchestrator, the OFVN controller, specifically designed, according to the SDN principles, to deliver Cloud services with IT and network resources requirements.
The scale and expense of modern data centers motivates running them as efficiently as possible. This paper explores how virtualized data center performance can be improved when network traffic and topology data informs VM placement. Our practical heuristics, tested on network-heavy, scale-out workloads in an 80 server cluster, improve overall performance by up to 70% compared to random placement in...
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