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In this paper, we present a mechanism called DWRED (Dynamic Weighted RED) that uses communicating agents in a Multi-Agents Systems to enhance the basic Random Early Detection (RED) congestion management algorithm. Our proposition provides different levels of service for multiple classes of traffic, and adds cooperation between the network nodes that allows dynamic modification of the running algorithm’s...
A Feature Interaction (FI) occurs when services (or features) behave incorrectly once they are used together. In this paper, we show how FIs can be resolved by using agents. An interest of our approach is that, instead of modifying directly the interacting services, we use a static or mobile agent which avoids the interaction by “forcing” the services to behave in a desirable way. We have determined...
This paper presents the preliminary design of the IMAGO project. This project consists of two major parts: the IMAGO Application Programming Interface (API) - an agent development kit based on Prolog, and the MLVM - a multithreading agent server framework. We focus on the IMAGO API and its communication model - a novel mechanism to automatically track down agents and deliver messages in a dynamic,...
Over the last few years a large number of mobile agent systems have been developed, both in the academic field and in the industrial one. However, agent technology has hardly been adopted in developing commercial applications, notwithstanding its interesting potentialities. In our thinking, this has been mainly due to the lack of interoperability of agent technology with traditional and common techniques...
Mobile Agents are being proposed for an increasing variety of applications. Distance Vector Routing (DVR) is an example of one application that can benefit from an agent-based approach. DVR algorithms, such as RIP, have been shown to cause considerable network resource overhead due to the large number of messages generated at each host/router throughout the route update process. Many of these messages...
This paper analyzes the requirements of reliability connection in network management environment (NME). It points out the shortcomings of existed fault tolerant system and high availability (HA) system in NME. In order to address the connection reliability problem, new concept of HA connection is proposed. In order to assure the HA connection in NME, this paper proposes a provision of software bus...
To overcome the shortcomings of existing IP networks and to facilitate the overall quality-of-service (QoS) provisioning in the near-future networks, new technologies such as Multi-Protocol Label Switching (MPLS) and Differentiated Services (Diffserv) have been proposed for support of differentiation of classes of services and guarantee of QoS. Diffserv and MPLS, however, require improved capabilities...
Adaptation is a key word for nomadic applications, since the execution environment that a nomadic user has varies in place and time. Traditional applications are designed and optimised for a specific environment, usually with high bandwidth and high computational power, and they do not fit well in other environments. In this paper we present a solution based on a dynamic composition of the execution...
This paper presents a framework for building network protocols for migrating mobile agents over a network. The framework allows network protocols for agent migration to be naturally implemented within mobile agents and to be constructed in a hierarchy as most data transmission protocols are. These protocols are given as mobile agents and they can transmit other mobile agents to remote hosts as first-class...
This paper deals with several architectural issues on a mobile agent-based workflow management system(WFMS). We mainly focus on performance and scalability issues among various architectural issues. We point out three major design issues that are indispensable for designing a mobile agent-based WFMS and find solutions for the issues. We propose an efficient design strategy based on the solutions,...
This paper describes the design and implementation of Optiprism, an agent-based network management system (NMS) providing configuration and fault management services for all-optical networks. Optiprism is designed to support (1) a scalable architecture consisting of a distributed hierarchy of software agents, or managers (2) the ability to alter the hierarchy as the network evolves by adding, removing...
In the Multimedia and Mobile Agent Research Laboratory an underway work is conducted toward combining management policies and Mobile Agents in the area of collaborative applications. The goal is to have a collaborative system thoroughly based on agents and highly flexible and dynamically manageable through multi-level policies. Towards this objective, we have designed a global framework to support...
The client/server technology manages to carry and treat an ever increasing amount of data. However, it is poorly scalable and personalized, and it does not consider the topology of networks. In spite of many weaknesses and the lack of killer applications, multi-agent and mobile agent systems offer more flexibility and reduce network load. They carry their code, where as other applications only send...
As networks become all-pervasive the importance of efficient information gathering for purposes such as monitoring, fault diagnosis, and performance evaluation can only increase. Extracting information out of large-scale, dynamic networked systems is becoming increasingly difficult. Distributed monitoring systems based on static object technologies such as CORBA and Java-RMI can cope with scalability...
Modern distributed file system realizations offer only partially resource location transparency, resource location independence, fault tolerance, load balancing, heterogeneity, self-configuration, and simplified user access. Traditional portability techniques developed in these systems become unsuited in highly dynamic environments. To solve these problems within a homogeneous framework we...
This paper presents a research about the technology of mobile agents which has Concordia system as its platform. Concordia was developed by Mitsubishi Eletric Information Technology Center America. In the latest years, the Internet became the main media to access information, data and personal communication. As a result, the overload of information in the bandwidth has become inevitable. Because of...
The role of agents and their potential in the electronic marketplace has been discussed widely, but the issue of mobile agent vulnerability to attack, particularly from malicious hosts, needs further development. This paper describes our Secure Internet Trade Agents (SITA) framework that allows for multiple ‘window shopping’ agents to retrieve results, whilst providing anonymity for the user, and...
Mobile agents can play a critical role in enabling dynamic applications on mobile phones. They can carry executable code, making possible effortless downloading of new capabilities and services to mobile phones. When combined with services that support context awareness, user customization, and sensitivity to the mobile phone environment, mobile agents can be used to provide the basis for a rich set...
This paper proposes an application of mobile agents for managing control and alarms in an integrated system dedicated to coordinated management of urban infrastructures (SIGEC). This system allows an ordered planning of the required work in an urban sector as well as an impact and the cost reduction of the interventions on the urban infrastructures. The SIGEC is based on a cooperative system which...
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