Network management

About: Network management is a research topic. Over the lifetime, 17859 publications have been published within this topic receiving 234520 citations. The topic is also known as: computer network management & NM.

Dynamic SDN Controller Placement in a LEO Constellation Satellite Network

Abstract: Software Defined Networking (SDN) has been identified as a potential approach to achieve a more flexible control and management of the traditional satellite systems and enhance the opportunities for future services including the possibility of a hybrid satellite/terrestrial network. Given the renewed interest towards Low-Earth-Orbit (LEO) constellations, an interesting research topic is the design of a suitable network management model taking into account user specific metrics. In this paper, we address this issue while investigating the use-case scenario of an SDN-enabled satellite space segment. A Dynamic Controller Placement Problem (DCPP) is considered for a LEO constellation where the traffic demands change dynamically based on users' geographical position and time zone. To this end, we develop a mathematical model and formulate it as an Integer Linear Programming (ILP) guaranteeing an optimal controller placement and satellite-to-controller assignment minimizing the average flow setup time with respect to the traffic dynamics. We show results for the DCPP regarding the average flow setup time. Furthermore, a comparison with respect to the static approach is investigated and the proposed SDN-enabled LEO constellation architecture is compared with alternative architectures proposed in the state of the art.

Network management tool

Abstract: A method, apparatus and computer program for preferentially displaying partial information related to one of a plurality of network equipment connected to a network being managed by a network management system The partial information is required for network management to be conducted from the network equipment A managed terminal is included in each network equipment connected to the network The network management system collects management information from each of the network equipment connected to the network and stores the management information therein When conducting network management from the network equipment, the managed terminal thereof sends a request for network management to the network management system The network management system transfers a program for managing the network to the managed terminal The transferred program informs the network management system of the identification of the managed terminal and the network management system transfers partial information related to the managed terminal to the managed terminal based on the identification The managed terminal then displays the transferred partial information so that network management can be conducted from the network equipment

911-NOW: A network on wheels for emergency response and disaster recovery operations

Abstract: Public safety organizations increasingly rely on wireless communication technology to provide effective command, control, and communication during emergencies and disaster response operations. Since emergencies can vary in scale from day-to-day operations to large-scale and widespread catastrophic events, any previously deployed network infrastructure may not be able to handle the traffic load. Worse, the wireless infrastructure may be damaged or destroyed, as occurred during the events of 9/11 and Hurricane Katrina. The 911-network on wheels (911-NOW) solution is a novel portable cellular system based on base station routers (BSRs) that does not require any pre-existing wireless infrastructure and provides capacity and coverage on demand. It is an auto-configurable system with a fully integrated service architecture that can be deployed as a single-cell solution for local communication or be configured to operate as an ad hoc network of cells. This paper describes the 911-NOW vision and discusses some of the differentiating features such as auto-configuration, network management, wireless mesh networking, and interoperability with existing public safety systems. We also highlight some of the research challenges associated with mobile and rapidly deployable wireless networks. In particular we provide an overview of issues centered upon dynamic assignment and management of Internet Protocol (IP) addresses, online and real-time calculation and maintenance of routing information, mobility management, and dynamic configuration and optimization of radio parameters. © 2007 Alcatel-Lucent.

Alarm correlation and network fault resolution using the Kohonen self-organising map

Abstract: A vital role for a large telecommunications operator is the ability to effectively manage its network. With increasing system size, complexity and bandwidth threatening to overload current management systems, it is no surprise that network management is a high priority for leading telecommunications providers. In this paper, a novel approach to fault management is investigated in which the advantages of artificial neural network technologies are used to complement and extend the capability of traditional systems. In particular, it is shown how a system based on Kohonen (1990) self-organising map theory can be successfully implemented as a means of identifying fault scenarios arising in an SDH-based environment.