Network Management (network + management)

Distribution by Scientific Domains

Terms modified by Network Management

  • network management system

  • Selected Abstracts

    Network management in new realms: wireless sensor networks

    Athanassios Boulis
    No abstract is available for this article. [source]

    A new policy-aware terminal for QoS, AAA and mobility management

    Hakima Chaouchi
    Policy-based management has been widely studied in recent years. The Internet Engineering Task Force (IETF) has recently introduced the policy-based networking as a means of managing IP networks according to the new constraints defined in the network, such as the guarantee of the quality of service (QoS). Network management based on policies, is modelled as a state machine, which moves from one state to another according to the enforced policy. The IETF policy-based networking is defined for application to network nodes. However, some recent work suggests extending the policy-based networking to the end-user terminals. In this paper, we present an analysis of such an extension and we propose some possible solutions to support new policy-aware terminals. In addition, we present AAA, QoS and mobility management that user such a policy-aware terminals.,Copyright © 2004 John Wiley & Sons, Ltd. [source]

    Grids of agents for computer and telecommunication network management

    M. D. Assunção
    Abstract The centralized system approach for computer and telecommunication network management has been presenting scalability problems along with the growth in the amount and diversity of managed equipment. Moreover, the increase in complexity of the services being offered through the networks also contributes to adding extra workload to the management station. The amount of data that must be handled and processed by only one administration point could lead to a situation where there is not enough processing and storage power to carry out an efficient job. In this work we present an alternative approach by creating a highly distributed computing environment through the use of Grids of autonomous agents to analyze large amounts of data, which reduce the processing costs by optimizing the load distribution and resource utilization. Copyright © 2004 John Wiley & Sons, Ltd. [source]

    A theory of tie-set graph and its application to information network management

    Norihiko Shinomiya
    Abstract This paper presents a new circuit theoretical concept based on the principal partition theorem for distributed network management focusing on loops of an information network. To realize a simple network management with the minimum number of local agents, namely the topological degrees of freedom of a graph, a reduced loop agent graph generated by contracting the minimal principal minor is proposed. To investigate the optimal distribution of the loop agents, a theory of tie-set graph is proposed. Considering the total processing load of loop agents, a complexity of a tie-set graph is introduced to obtain the simplest tie-set graph with the minimum complexity. As for the simplest tie-set graph search, an experimental result shows that the computational time depends heavily on the nullity of the original graph. Therefore, a tie-set graph with the smallest nullity is essential for network management. Copyright © 2001 John Wiley & Sons, Ltd. [source]

    Active network architecture and management

    Roy Ladner
    Access and retrieval of meteorological and oceanographic data from heterogeneous sources in a distributed system presents many issues. There are a number of features of the TEDServices system that illustrate active network management for such data. There is a self-aware or intelligent aspect with respect to the mechanisms for shutdown, data ordering, and propagation of data orders. Intelligent cache management and collaborative application sharing process are other features of the active network management. Additionally a very important capability is the implementation of resumable object streams, which allows either the client or server side of a request to lose network connection, regain it, and the request will continue where it left off. © 2007 Wiley Periodicals, Inc. Int J Int Syst 22: 1123,1138, 2007. [source]

    UniFAFF: a unified framework for implementing autonomic fault management and failure detection for self-managing networks

    Ranganai Chaparadza
    Today's network management, as known within the Fault, Configuration, Accounting, Performance, Security (FCAPS) management framework, is moving towards the definition and implementation of ,self-managing' network functions, with the aim of eliminating or drastically reducing human intervention in some of the complex aspects or daunting tasks of network management. The fault management plane of the FCAPS framework deals with the following functions: fault detection, fault diagnosis, localization or isolation, and fault removal. Task automation is at the very heart of self-managing (autonomic) nodes and networks, meaning that all functions and processes related to fault management must be automated as much as possible within the functionalities of self-managing (autonomic) nodes and networks, in order for us to talk about autonomic fault management. At this point in time there are projects calling for implementing new network architectures that are flexible to support on-demand functional composition for context- or situation-aware networking. A number of such projects have started, under the umbrella of the so-called clean-slate network designs. Therefore, this calls for open frameworks for implementing self-managing (autonomic) functions across each of the traditional FCAPS management planes. This paper presents a unified framework for implementing autonomic fault management and failure detection for self-managing networks, a framework we are calling UniFAFF. Copyright © 2008 John Wiley & Sons, Ltd. [source]

    Measuring the edge-to-edge available bandwidth in a DiffServ domain

    N. Blefari-Melazzi
    The new Internet will be deployed with a number of tools for network management and quality of service control. To this end, we focus on a single administrative domain based on the Differentiated Services architectural model, and we recognize the need for two main functions for each supported traffic class: an admission control procedure, and a monitoring of the edge-to-edge bandwidth availability. In this work, we specifically focus on the second issue. To preserve scalability and thus to be compliant with Differentiated Services architecture, we propose stateless and distributed procedures based on traffic measurements. Our technique tests network resources by means of ,special' probing packets, which have the task of implicitly conveying the network status to its edges. We show by means of simulations the effectiveness of our solutions, in spite of a very low overhead. Copyright © 2007 John Wiley & Sons, Ltd. [source]

    Low-cost data communication network for rural telecom network management

    C. Jagadish
    The backbone networking infrastructure of rural telecom networks is often costly and is of limited bandwidth. The availability of connectivity such as DSL or leased lines is scarce. In order to keep operational costs low, these rural telecom networks are often kept unmanned and are managed from a centralized network management station (NMS). This often requires a low-cost, efficient and reliable data communication network (DCN) between the rural telecom equipment and the central NMS. The conventional DCN used for telecom management consists either of leased lines or Internet connectivity. These are often costly and not freely available in rural areas. We have developed a new DCN model, based on dial-up, which is easily available. Using mathematical models and measurements we show that this DCN meets the QoS requirements of a telecom network at an affordable cost. We have implemented this DCN in corDECT networks. This is in use in India and Tunisia, and is under implementation in other similar countries. Copyright © 2007 John Wiley & Sons, Ltd. [source]

    Roaming and service management in public wireless networks using an innovative policy management architecture

    Idir Fodil
    Nowadays, public wireless local area networks (WLANs), commonly called hotspots, are being largely deployed by WISPs (Wireless Internet Service Providers) as a means of offering ubiquitous Internet access to their customers. Although a substantial number of solutions have been proposed to improve security, mobility and quality of service on the wireless area, access network management which is mandatory remains a very significant concern. This paper describes RSM-WISP, a new management architecture designed for WISPs to facilitate the implementation and management of the services they offer at the access side of the WLAN, and to manage roaming contracts between WISPs. Our architecture is based upon the policy-based management principles as introduced by the IETF, combined with more intelligence at the network edge. RSM-WISP adopts an architecture that is composed of two elements: a WISP management center (MC) that deploys policies and monitors all the WLANs, and a programmable access router (CPE) located in each WLAN. The CPE ensures service enforcement, service differentiation (access to different service levels) and guarantee, user access management, and dynamic WLAN adaptation according to the user's SLA (service level agreement). It also permits automatic service updates according to the user's requirements. Concerning roaming management, this is achieved on the CPE through multiple service provider support capabilities. This approach provides WISPs with a simple, flexible and scalable solution that allows easy service deployment and management at the access. This management architecture has been implemented, tested and validated on the 6WINDGate routers.,Copyright © 2005 John Wiley & Sons, Ltd. [source]

    A distributed networking system for multimedia Internet access service using ATM over ADSL

    Daniel Won-Kyu Hong
    This paper proposes a distributed networking system architecture for Internet-access service provision using ATM over xDSL technology. We describe the hierarchical network model in deploying ADSL services across the ATM access networks, which can easily accommodate the explosive growth of ADSL subscribers in the future. In addition, this paper describes the distributed networking system and its capability to provide a systemic network management using the principal networking concepts of service ordering, addressing, routing, adaptation and switching. All of the networking system components with CORBA objects in favor of the distribution and location transparency are defined and described using the CORBA interface description language (IDL) for commonality. Lastly, we present its implementation and operation in Korea Telecom.,Copyright © 2004 John Wiley & Sons, Ltd. [source]

    Development of SNMP-XML translator and gateway for XML-based integrated network management

    Jeong-Hyuk Yoon
    The research objective of our work is to develop a SNMP MIB to XML translation algorithm and to implement an SNMP-XML gateway using this algorithm. The gateway is used to transfer management information between an XML-based manager and SNMP-based agents. SNMP is widely used for Internet management, but SNMP is insufficient to manage continuously expanding networks because of constraints in scalability and efficiency. XML,based network management architectures are newly proposed as alternatives to SNMP-based network management, but the XML-based Network Management System (XML-based NMS) cannot directly manage legacy SNMP agents. We also implemented an automatic specification translator (SNMP MIB to XML Translator) and an SNMP-XML gateway.,Copyright © 2003 John Wiley &Sons, Ltd. [source]

    Role of Knowledge in Value Creation in Business Nets*

    Kristian Möller
    abstract This paper focuses on the role of knowledge in intentionally created business networks called nets. Nets are seen to offer firms collective benefits beyond those of a single firm or market transaction. We propose that the types of knowledge and learning required in the management of different types of business net are dependent on the value creation characteristics of the net types. Based on this we suggest a classification of three generic net types ,,current business nets', ,business renewal nets', and ,emerging new business nets', and argue that they pose different conditions for management in nets. Using this framework and integrating notions from the industrial network approach, strategic management and dynamic capabilities view, and organizational learning we make a number of observations and propositions about the role of knowledge and learning in the three types of business net. The paper contributes to the emerging theory of network management. [source]

    Generalized MPLS-based distributed control architecture for automatically switched transport networks

    Yangguang Xu
    Current circuit-switched transport networks, such as plesiochronous digital hierarchy (PDH) and synchronous optical network/synchronous digital hierarchy (SONET/SDH), have traditionally used centralized network management for connection control. To facilitate the value-added capabilities of today's networks,such as the rapid provisioning of services, dynamic setup of bandwidth requests, and fast mesh-based restoration,distributed connection control using signaling protocols has quickly gained industry momentum. Efforts have been initiated in various standards bodies to define the automatically switched transport network (ASTN). Although many architectural choices are now available, this paper describes a distributed control plane architecture that can be applied to various circuit-switching technologies and different network applications. This architecture adopts the concept of a generalized version of multiprotocol label switching (MPLS), which extends and modifies MPLS and other protocols on the Internet to make them applicable to various transport networks and also facilitates optical data networking. Four major functional components are incorporated in this architecture: element-level resource discovery, state information dissemination, path selection, and path control modules. Using these concepts, the transport network can be viewed as a virtual nonblocking, reconfigurable backplane of different network clients. This view represents a radical departure from the traditional data networking view of transport networks as providing fixed pipes and will have a dramatic impact on future network interworking and end-to-end traffic engineering (TE). [source]

    CyberCarrier service and network management

    Michael R. Brenner
    This paper presents an overview of the service and network management architecture of Lucent Technologies' CyberCarrier Solution. Businesses of all sizes and from all sectors are choosing to outsource large portions of their information technology (IT) operations to Internet-based data centers that host application service providers (ASPs). Many network service providers (NSPs) have decided to become CyberCarrier service providers (CCSPs),that is, they have decided to expand their businesses to include ASP data center hosting services. Managing these new ASP data center hosting services is one of the most urgent challenges encountered by a CCSP, and its solution is arguably critical to a CCSP's long-term success. Although introducing ASP data center hosting services increases and diversifies a CCSP's revenue, it also significantly complicates the CCSP's management processes. This paper defines an abstract management functional architecture that divides the CCSP management problem into tractable pieces and addresses each of them. Then it explains how the CyberCarrier Solution maps onto that functional architecture. Finally, it explores how Lucent will evolve its CyberCarrier Solution through future management system innovations. [source]