Architecture for Mobile Heterogeneous Multi Domain Networks

Multi domain networks can be used in several scenarios including military, enterprize networks, emergency networks and many other cases. In such networks, each domain might be under its own administration. Therefore, the cooperation among domains is conditioned by individual domain policies regarding sharing information, such as network topology, connectivity, mobility, security, various service availability and so on. We propose a new architecture for Heterogeneous Multi Domain (HMD) networks, in which one the operations are subject to specific domain policies. We propose a hierarchical architecture, with an infrastructure of gateways at highest-control level that enables policy based interconnection, mobility and other services among domains. Gateways are responsible for translation among different communication protocols, including routing, signalling, and security. Besides the architecture, we discuss in more details the mobility and adaptive capacity of services in HMD. We discuss the HMD scalability and other advantages compared to existing architectural and mobility solutions. Furthermore, we analyze the dynamic availability at the control level of the hierarchy

A Data Distribution Service in a hierarchical SDN architecture: implementation and evaluation

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Software-defined networks (SDNs) have caused a paradigm shift in communication networks as they enable network programmability using either centralized or distributed controllers. With the development of the industry and society, new verticals have emerged, such as Industry 4.0, cooperative sensing and augmented reality. These verticals require network robustness and availability, which forces the use of distributed domains to improve network scalability and resilience. To this aim, this paper proposes a new solution to distribute SDN domains by using Data Distribution Services (DDS). The DDS allows the exchange of network information, synchronization among controllers and auto-discovery. Moreover, it increases the control plane robustness, an important characteristic in 5G networks (e.g., if a controller fails, its resources and devices can be managed by other controllers in a short amount of time as they already know this information). To verify the effectiveness of the DDS, we design a testbed by integrating the DDS in SDN controllers and deploying these controllers in different regions of Spain. The communication among the controllers was evaluated in terms of latency and overhead.Postprint (author's final draft

Maestro: a remote execution tool for visualization clusters

In recent years immersive visualization systems have transitioned from running on large shared memory systems to clusters of commodity PCs. While there has been much research done to create middleware to manage application synchronization, there has been very little work done to allow easy execution of immersive applications on a cluster. Although there are existing remote execution tools, they are targeted at high performance computing (HPC) and enterprise administration. This thesis presents Maestro, a cross-platform remote execution tool designed specifically for visualization clusters. The goals of Maestro, a description of its design, and a detailed discussion of its implementation are provided. The design description gives explanations of the three components of Maestro: the core that handles networking and security, the user interface that controls the cluster, and the daemon on each cluster node. Maestro has been successfully deployed on numerous large visualization clusters, which have led to refinements and improvements to the tool

Coordination of Supply Chain Networks and the Emergence of Mini-maestros

Abstract Companies recognize international sourcing as a business practice useful to reduce product prices, deal with supply shortages and identify new competitive suppliers. Effective international sourcing implies the integration and coordination of materials, processes, information flows and multiple producers at each buying location. Many companies do not have the capabilities or the willingness to develop and manage such sourcing networks; therefore, other entities have assumed these responsibilities. These coordinators are in charge of the integration of many suppliers to develop full-package production, serve as liaisons between suppliers’ capabilities and market demands, and provide the technical and financial support to sustain the sourcing network. The review of the industrial clustering and global supply chain literature allowed the identification of such coordinators in Mexico. The emergence and profile of these coordinators is associated with corporate strategies of multinational firms, the efforts of industrial groups, and the governmental policies for the development of dynamic industrial regions. This paper analyzes the characteristics of four coordination models identified in the Mexican context, focusing on their contribution to the participation and upgrading of national suppliers. The profile of the coordinator firm, the type of relations that this firm sustains with producers and the support offered to suppliers is also discussed. A particular emphasis is given to the fourth model where a third party, a knowledge and service company, assumes the coordinator role. The interest on this model is due to its novelty, the flexibility of the sourcing network, and the potential impact on regional development that could result from the intervention of a neutral third party as coordinator of the activities of multiple local and specialized suppliers