103 research outputs found
Policy-based network management in an integrated mobile network
Through the seamless integration of different kinds of technologies, services and terminals, and with the expected offered bandwidth, the next generation networks will put a new set of challenges related to operation and management. In this paper we present a Policy-based Network Management System that is being developed inside the Daidalos IST project
Software agents in network management
The globalisation of Internet technology had a strong impact on technology price and availability, which
resulted in the emerging of more opportunities and more services in distance learning, electronic commerce,
multimedia and many others. From the user perspective, there is a need for more comprehensive interfaces.
From the network perspective, the introduction of QoS and the upcoming of new and more complex services
led to additional bandwidth and management requirements.
The amount of management information produced by applications, workstations, servers and all kind of
network components is increasingly hard to process. All this information can be filtered by an intelligent
network management system, capable of proactive management. This paper intents to highlight the role of
newer paradigms, such as Software Agents, in Network Management frameworks. The use of intelligent
programs that substitutes the user in boring, repetitive or information intensive tasks can help in the
resolution of problems such as congestion, reliability, real-time response and many others
JAMAP: a Web-Based Management Platform for IP Networks
In this paper, we describe JAMAP, a prototype of Web-based management platform for IP networks. It is entirely written in Java. It implements the push model to perform regular management (i.e. permanent network monitoring and data collection) and ad hoc management (i.e. temporary network monitoring and troubleshooting). The communication between agents and managers relies on HTTP transfers between Java applets and servlets over persistent TCP connections. The SNMP MIB data is encapsulated in serialized Java objects that are transmitted as MIME parts via HTTP. The manager consists of two parts: the management server, a static machine that runs the servlets, and the management station, which can be any desktop running a Web browser. The MIB data is transparently compressed with gzip, which saves network bandwidth without increasing latency too significantly
A mid-level framework for independent network services configuration management
Tese doutoramento do Programa Doutoral em TelecomunicaçõesDecades of evolution in communication network’s resulted in a high diversity of solutions,
not only in terms of network elements but also in terms of the way they are managed.
From a management perspective, having heterogeneous elements was a feasible scenario
over the last decades, where management activities were mostly considered as additional
features. However, with the most recent advances on network technology, that includes
proposals for future Internet as well as requirements for automation, scale and efficiency,
new management methods are required and integrated network management became an
essential issue.
Most recent solutions aiming to integrate the management of heterogeneous network
elements, rely on the application of semantic data translations to obtain a common representation
between heterogeneous managed elements, thus enabling their management
integration. However, the realization of semantic translations is very complex to be effectively
achieved, requiring extensive processing of data to find equivalent representation,
besides requiring the administrator’s intervention to create and validate conversions,
since contemporary data models lack a formal semantic representation.
From these constrains a research question arose: Is it possible to integrate the con g-
uration management of heterogeneous network elements overcoming the use of manage-
ment translations? In this thesis the author uses a network service abstraction to propose
a framework for network service management, which comprehends the two essential management
operations: monitoring and configuring. This thesis focus on describing and
experimenting the subsystem responsible for the network services configurations management,
named Mid-level Network Service Configuration (MiNSC), being the thesis
most important contribution.
The MiNSC subsystem proposes a new configuration management interface for integrated
network service management based on standard technologies that includes an
universal information model implemented on unique data models. This overcomes the
use of management translations while providing advanced management functionalities,
only available in more advanced research projects, that includes scalability and resilience
improvement methods. Such functionalities are provided by using a two-layer distributed
architecture, as well as over-provisioning of network elements. To demonstrate MiNSC’s
management capabilities, a group of experiments was conducted, that included, configuration
deployment, instance migration and expansion using a DNS management system
as test bed. Since MiNSC represents a new architectural approach, with no direct reference for
a quantitative evaluation, a theoretical analysis was conducted in order to evaluate it
against important integrated network management perspectives. It was concluded that
there is a tendency to apply management translations, being the most straightforward solution
when integrating the management of heterogeneous management interfaces and/or
data models. However, management translations are very complex to be realized, being
its effectiveness questionable for highly heterogeneous environments. The implementation
of MiNSC’s standard configuration management interface provides a simplified
perspective that, by using universal configurations, removes translations from the management
system. Its distributed architecture uses independent/universal configurations
and over-provisioning of network elements to improve the service’s resilience and scalability,
enabling as well a more efficient resource management by dynamically allocating
resources as needed
Policy-Based Network Management in an Integrated Mobile Network
Through the seamless integration of different kinds of technologies, services and terminals, and with the expected offered bandwidth, the next generation networks will put a new set of challenges related to operation and management. In this paper we present a Policy-based Network Management System that is being developed inside the Daidalos IST project
NetGlance NMS - An integrated network monitoring system
Mestrado de dupla diplomação com a Kuban State Agrarian UniversityThis work is about IT infrastructure and, in particular, computer networks in KubSAU
and IPB. Also, it is about a network monitoring system “NetGlance NMS” developed for
KubSAU System Administration Department.
Work objective is to optimize the information structure for KubSAU and IPB.
During the work, following tasks were completed: Research the existing IPB information
structure, Compare the information structure for KubSAU and IPB, Model the IPB
computer network (topology, services), Research bottlenecks and potential pitfalls in the
data-center and in the computer network of IPB, Research information security mechanisms
in the computer network of IPB, Organize monitoring process for the computer
network in KubSAU.
The most important impact of the work is an increasing network productivity and user
experience as a result of creation and deploy a monitoring software.O trabalho descrito no âmbito desta dissertação incide sobre a infraestrutura TI e, em
particular, sobre as redes de computadores da KubSAU e do IPB. Além disso, descreve-se
um sistema de gestão integrada de redes, designada “NetGlance NMS”, desenvolvido para
o Departamento de Administração de Sistemas da KubSAU.
O objetivo do trabalho é desenvolver uma ferramenta para otimizar a gestão da estrutura
de comunicações das duas instituições.
Durante o trabalho, as seguintes tarefas foram concluídas: levantamento da estrutura
de comunicações do IPB, comparação da estrutura de comunicações entre a KubSAU e o
IPB, modelação da rede de comunicações do IPB (topologia, serviços), estudo de possíveis
estrangulamentos no datacenter e na rede de comunicações doIPB, estudo de mecanismos
de segurança na rede de comunicações do IPB, organização do processo de monitorização
da rede de comunicações da KubSAU.
O contributo mais relevante deste trabalho é o desenvolvimento de uma aplicação de
gestão integrada de redes, de forma a contribuir para o aumento da produtividade da rede
e da experiência dos utilizadores
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