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Cisco DevNet Always-On APIC-EM Sandbox is useful in the phase of learning about software-defined networking, allowing to perform experiments, but without the possibility to change the topology the extent of development is limited. In this paper a Cisco APIC-EM SDN Controller was installed in a private cloud orchestrated by OpenStack. The major objective was to create a virtualized testbed, consisting...
The paper discusses a solution to allow permanent access to a cloud for the devices in mobile wireless sensor networks. Concepts like Dew Computing DC distributes the cloud infrastructure but has a lack of mobility. Seamless connectivity for applications and services is ensured by implementing a mobility system over different access technologies relying on dynamic context-based routing mechanism in...
Micro-clouds infrastructures allow supporting applications on local and energy-efficient resources. Communication between micro-clouds takes place on shared and non-dedicated Internet links. Network control and optimization can only happen at the edge. For availability and persistence, the storage of application data must be geo-replicated. Maintaining strong data consistency under concurrent accesses...
The legacy automatic deployments of OpenStack are mostly focused on specific packets and configurations. This paper investigates the possibility to automate the deployment of both OpenStack and the underlying architecture at once (minimum one Controller Node and one Compute Node). The Chef tool proved to be a good candidate, together with Vagrant (for automatic creation and configuration of virtual...
In order to evaluate the performance of the Pyretic controller for software-defined networks (SDN), a Mininet network emulator (Ubuntu 13.04 virtual machine) was installed and configured. The innovative solution proposed by this controller consists in the simplicity of defining the rules by means of high-level abstract functions and the support for modularity. Using dedicated operators, the multiple...
This paper studies the SPLAY open-source framework that facilitates the design, deployment and testing of large-scale distributed applications. A mechanism for automatic control of a virtualized testbed created in OpenStack running Ubuntu 14.04.3 was implemented. The SPLAY entities involved herein were the following: a controller and a modified version of the daemons without using the sandboxing concept...
The generalization of distributed systems-of-systems lead to increasing management and operation complexity. A sound approach to deal with this complexity is to leverage overlay networks and the higher level of abstraction they allow for distributed operations. In particular, the virtualization of underlying network resources allows providing a range of reusable network services and compose them with...
The study proposes an easily deployable platform for providing ubiquitous connectivity to public transportation vehicles. The platform is capable to exploit the connectivity offered by heterogeneous wireless networks owned by different operators and it integrates a centralised information system (CIS) which stores the context information (CI) characterising the heterogeneous networks. The study describes...
This paper proposes a solution for active measurement of the Available Transfer Rate needed in a multitunnel architecture with a smart mobile router offering uninterrupted services for its wireless customers. It simultaneously uses several wireless/mobile access networks to the Internet in order to reach the service continuity gateway located somewhere in a broadband network. This customer-oriented...
This paper presents a capacity and Available Transfer Rate evaluation mechanism which can be used in a heterogeneous wireless network. This is needed to perform load balancing over several wireless links in order to fulfill the transfer rate and connectivity requirements of Next Generation Network services. The implemented measurement tool is based on WBest and the experiments considered different...
This paper presents new facilities added to the existing Information Object (IO) Management Tool used in the open-source implementation of NetInf (Network of Information). The project was realized within a virtual machine running Ubuntu 10.10 and the contributions to the source code developed in Eclipse environment refer to the following: a) a more friendly way to introduce the search criteria, by...
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