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Nowadays we are witnessing a strong interest from the network operators towards provisioning all-IP services. The user demands and the effort of the operators to address them with traditional network management processes push the networks to a complexity where traditional network management methods do not scale and cannot guarantee error-free configurations, optimal resource utilization and dynamic...
Quantitative service differentiation can provide network operators with the “tuning knobs” for adjusting the quality spacing between different traffic classes and it is convenient for users to choose an appropriate service according to their requirements and the costs. A loss proportional differentiated Assured Forwarding service model is proposed in this paper, and we describe an implementation scheme...
Composing communication protocols as needed is a topic researched for a long time with moving focus. Nevertheless the vast flexibility of these proposals also prevented the real world success: there was no management solution available that could cope with the many degrees of freedom such architectures offer. This paper discusses the Dynamic Protocol Composition (DPC) architecture developed in the...
The great challenges of Internet service fault management are uncertainty and noise. To address these challenges, we model the service scenario through a multi-layer management model, and propose an approach using active probing to detect and diagnose faults. This approach uses bipartite Bayesian network as dependency model, binary symmetric channel as noise model, and is composed of two phases: fault...
In grid computing, most of the SLA management systems focus on static SLAs, where the guarantee terms are defined as constants or bounds. None of them support dynamic SLAs based on analytical expressions. Therefore, to enforce dynamic SLAs and to improve services offered to applications, we propose a new monitoring method to control the resource utilization and to reconfigure them when necessary in...
In this paper we present a distributed and automated network services monitoring and configuration framework composed by a monitoring sub-system and a service replication sub-system. We will focus on the details of the configuration sub-system, capable of static, dynamic and contextual parameterization and service replication, independent of software and hardware implementations.
As the next generation networks promise to provide network convergence with services for both static and mobile networks, the recent research focus is converging in the direction of standardizing common infrastructure based on all-IP networks. IMS is a recent initiative, designed by 3GPP and TISPAN partnership, which outlines a service delivery platform (SDP) framework. A flexible and robust QoS management...
With the popularity of Web2.0, web has become to be a application programming platform where third parties can create new applications (mash-ups) mixing the functionality offered by others. This trend has extended to the domain of mobile networks. Combining mashup and mobile networks would make the mashup more powerful and provide additional user value. This paper explores how to realize operational...
This paper is focussed on the NETQOS architecture for automated QoS policy provisioning, which can be used in future Internet scenarios by the different actors (i.e. network operators, service providers, and users) for flexible QoS configuration over combinations of mobile, fixed, sensor and broadcast networks. The NETQOS policy management architecture opens the possibility to specify QoS policies...
In order to make recommendations to users about the potential performance of advanced Internet applications - in the scope of network monitoring - it is not sufficient to just analyze the network performance metrics: it should be also considered information concerning the application type, the traffic generated, and the user profile. In the present paper, we propose a new approach for monitoring the...
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