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Efficient and secure device to device communication is a necessary enabler for realization of fog and edge computing models. With an ever-increasing number, diversity, and geographical distribution of heterogeneous devices, ranging from pervasive sensor networks to edge cloudlets, the interconnection and network management of these devices emerges as a major challenge. Peer-to-peer (P2P) network overlays...
The energy consumed by the networking resources to access the computational and storage resources is one of the factors to be considered in the cloud data center. In SDN, the network virtualization showcases the business in the network resource allocation when traffic is generated from the source host to the destination host. The network switches in the cloud based data centric network acquire the...
OpenStack has been widely acknowledged to be one of the most important open source cloud platforms. In order to perform experimentally driven research in the area of cloud and cloud networking, there is however a big gap, because most researchers do not have access to a large cloud deployment and cannot change networking or compute infrastructure in order to test their algorithms and protocols on...
ETRI distributed cloud platform provides customers with optimal computing and storage resources over remotely distributed micro datacenters connected over multi-domain transport networks. It requires dynamic SDN control to utilize transport network resource efficiently. This paper introduces implementation of transport network orchestration to control multi-domain transport networks for the distributed...
Reconfiguration of high performance lossless interconnection networks is a cumbersome and time-consuming task. For that reason reconfiguration in large networks are typically limited to situations where it is absolutely necessary, for instance when severe faults occur. On the contrary, due to the shared and dynamic nature of modern cloud infrastructures, performance-driven reconfigurations are necessary...
The article describes an approach to create virtual cloud network laboratory. The topology is created with the visual editor. Then a script for network deployment is created. It is based on the scheme description. For implementation of this approach the cloud system based on OpenNebula has been created. The experiment has shown the efficiency of using cloud systems in IT education. Even the small...
Resource provisioning is a key step in the deployment of applications onto clouds. When some datacenter is not accessible or some part of the infrastructure is crashed, the provisioning mechanism is therefore essential for these applications to recover quickly from sudden failures, especially for time critical applications. However, most current solutions focus on the cloud provider's hardware to...
The most demanding tenants of shared clouds require complete isolation from their neighbors, in order to guarantee that their application performance is not affected by other tenants. Unfortunately, while shared clouds can offer an option whereby tenants obtain dedicated servers, they do not offer any network provisioning service, which would shield these tenants from network interference. In this...
In cloud data centers, a resource controller is currently used to deploy virtual machines (VMs) and create virtual networks. To decide which servers VMs are deployed on and migrated to, conventional resource controllers take into account the amount of server resources and usage but not physical network loads. Network resources are more difficult to adjust than server resources since manipulations...
Accurate and up-to-date knowledge of how a cloud tenant's VMs utilize the underlying cloud infrastructure is essential for many cloud management tasks including tenant onboarding, optimized VM placement, performance optimization, and debugging. Unfortunately, existing solutions such as instrumentation at the hypervisors or standard networking protocols such as LLDP only provide a partial picture of...
Cloud computing offers the flexibility of accessing to a shared pool of resources based on the pay as you go fashion. Data centers, being the main hosts of cloud services, play the key role in the delivery of cloud services while energy consumption and resiliency are two main drivers of the operational expenses of the operators. In this paper, we consider the interconnection of cloud data centers...
Minimizing energy consumption and improving performance in data centers are critical to cost-saving for cloud operators, but traditionally, these two optimization objectives are treated separately. Therefore, this paper presents an unified solution combining two strategies, flow migration and VM migration, to maximize throughput and minimize energy, simultaneously. Traffic-aware flow migration (FM)...
Networks with homogeneous routing nodes are constantly at risk as any vulnerability found against a node could be used to compromise all nodes. Introducing diversity among nodes can be used to address this problem. With few variants, the choice of assignment of variants to nodes is critical to the overall network resiliency.
Cloud service providers use workload consolidation technique in many-core cloud processors to optimize system utilization and augment performance for ever extending scale-out workloads. Performance isolation usually has to be enforced for the consolidated workloads sharing the same many-core resources. Networks-on-chip (NoC) serves as a major shared resource, also needs to be isolated to avoid violating...
In the cloud computing era, the goal of data center network is not only to interconnect a large number of servers, but also to provide low latency and high bandwidth. A new 2-layer architecture, C-tree, is proposed for cloud computing in this paper. It is a flat topology, in which the horizontal traffic's latency is obviously lower than in traditional three-layer architectures. Also, C-tree can provide...
Information-Centric Networking (ICN) is a novel paradigm for future Internet architectures. It exploits the current trend in Internet usage which mostly involves information dissemination. ICN architectures based on the publish/subscribe model use names for information in order to route requests and data, as well as to facilitate in-network caching, anycasting and multicasting for efficient content...
Current trends in cloud computing suggest that both large, public clouds and small, private clouds will proliferate in the near future. Operational requirements, such as high bandwidth, dependability and smooth manageability, are similar for both types of clouds and their underlying data center architecture. Such requirements can be satisfied with utilizing fully distributed, low-overhead mechanisms...
This paper targets at building efficient perimeter defense for virtual private cloud (VPC) in public cloud that provides infrastructure as a service (IaaS). Because topology information can help both cloud and cloud user to better manage VPC infrastructure, we propose topology oriented VPC deployment to 1) reduce the security threats caused by transparency/virtualization, 2) to facilitate perimeter...
Cloud computing is making it possible to separate the process of building an infrastructure for service provisioning from the business of providing end user services. Today, such infrastructures are normally provided in large data centres and the applications are executed remotely from the users. One reason for this is that cloud computing requires a reasonably stable infrastructure and networking...
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