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 TitleDate AddedCompany
whitepaper Service Level Management in Global Enterprise Services: From QoS Monitoring and Diagnostics to Adaptation, a Case Study2007-07-13 Boeing
  The paper developed a Quality of Service (QoS) management system to support Service Level Management (SLM) for global enterprise services. The QoS management system is integrated with one of the enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that the integrated solution helps global enterprise services to better maintain the service level agreements. Test results have validated the architecture design and integration approach. This paper describes the QoS management architecture and its integration within the enterprise service system with a focus on QoS monitoring, diagnostics and adaptation. The validation test results are also presented as a case study in this paper.

Tags: Network Management, IT Infrastructure		   
whitepaper Critical Transfer Issues in QoS-C Architecture Models and Session-Based Communication2007-07-04 University of Rousse
  This paper discusses the major issues and key factors definitions in QoS-C architecture models and session-based communication in MAN environment. Although network parameters as frame delay, frame jitter and packet loss are familiar in computer networks, they are examined in this work as an integrated part of the critical transfer framework thus demonstrating a new summarized view on the design of converged communication platform. A framework of QoS-C environment is outlined, including the most important goals in the contemporary session-based communication.   
whitepaper A Probabilistic Approach to Modeling and Estimating the QoS of Web-Services-Based Workflows2007-07-02 Reed Elsevier
  Web services promise to become a key enabling technology for B2B e-commerce. One of the most-touted features of Web services is their capability to recursively construct a Web service as a workflow of other existing Web services. The Quality of Service (QoS) of Web-services-based workflows may be an essential determinant when selecting constituent Web services and determining the service-level agreement with users. To make such a selection possible, it is essential to estimate the QoS of a WS workflow based on the QoSs of its constituent WSs.

Tags: Internet and Web, Workflow Management		   
whitepaper ESG Lab Field Audit2007-07-01 Riverbed
  Many companies have successfully implemented Riverbed WDS solutions within their Cisco networks. This ESG Lab Field Audit documents the success that these Riverbed customers have experienced with a focus on configurations and installation experiences. Download this paper today and learn how Riverbed technology supports valuable networking technologies including PoE, VoIP and QoS. Access it now!

Tags: LAN - WAN, LAN - WAN, Network Management, IT Infrastructure		   
whitepaper NETGEAR Builds Mobile Learning Environment for the University of Canberra0000-00-00 Netgear
  The University of Canberra has 1,200 staff and 10,000 students, with ninety countries represented by its student body. The challenge for the University of Canberra was to implement an IT framework which supported the seamless interaction of wired and wireless solutions, improved bandwidth capabilities and provided sufficient levels of secure wireless coverage across the campus. Due to the networking provider's ability to exceed the identified criteria, the University of Canberra selected NETGEAR, along with their preferred network integration reseller ASI Solutions, as its partner to plan and implement the required upgrades.

Tags: Network Management, LAN - WAN		   
whitepaper A Statistical Approach to Risk Mitigation in Computational Markets2007-06-29 Association for Computing Machinery
  This paper studies stochastic models to mitigate the risk of poor Quality-of-Service (QoS) in computational markets. Consumers who purchase services expect both price and performance guarantees. They need to predict future demand to budget for sustained performance despite price fluctuations. Conversely, providers need to estimate demand to price future usage. The skewed and bursty nature of demand in large-scale computer networks challenges the common statistical assumptions of symmetry, independence, and stationarity. This discrepancy leads to underestimation of investment risk. The paper confirms this non-normal distribution behavior in the study of demand in computational markets. The high agility of a dynamic resource market requires flexible, efficient, and adaptable predictions.

Tags: IT Budgeting		   
whitepaper Optimal Replica Placement in Tree Networks With QoS and Bandwidth Constraints and the Closest Allocation Policy2007-06-28 French National Institute for Research in Computer Science and Control
  This paper deals with the replica placement problem on fully homogeneous tree networks known as the Replica Placement optimization problem. The client requests are known beforehand, while the number and location of the servers are to be determined. The latter problem is investigated using the Closest access policy when adding QoS and bandwidth constraints. The paper proposes an optimal algorithm in two passes using dynamic programming.

Tags: Network Management		   
whitepaper Physical-Layer Considerations for the Realistic Deployment of Impairment-Aware Connection Provisioning2007-06-15 Institute of Electrical and Electronics Engineers
  Nowadays, impairment-aware connection provisioning is a hot topic due to the evolution of optical networks to all-optical infrastructures and to the need to maintain or enhance Quality of Service (QoS). Most of the research efforts in this field use complex, analytical models of impairments as the basis for the connection provisioning decision. However, these models are not fully feasible in practice due to cost, monitoring limitations and the architectures of impairment-aware Routing and Wavelength Assignment (RWA). This paper discusses key physical-layer considerations for the realistic deployment of impairment-aware connection provisioning, and provides an example of cost-effective, distributed Impairment-aware RWA (IRWA) in the context of the all-optical ADRENALINE testbed.

Tags: Network Management, Network Technologies		   
whitepaper Towards User-Centric Metrics for Denial-of-Service Measurement2007-06-14 Association for Computing Machinery
  To date, the measurement of user-perceived degradation of quality of service during Denial of Service (DoS) attacks remained an elusive goal. Current approaches mostly rely on lower level traffic measurements such as throughput, utilization, loss rate, and latency. They fail to monitor all traffic parameters that signal service degradation for diverse applications, and to map application Quality-of-Service (QoS) requirements into specific parameter thresholds. To objectively evaluate an attack's impact on network services, its severity and the effectiveness of a potential defense, the paper needs precise, quantitative and comprehensive DoS impact metrics that are applicable to any test scenario. The paper proposes a series of DoS impact metrics that measure the QoS experienced by end users during an attack.

Tags: Intrusion - Tampering, Intrusion - Tampering		   
whitepaper QUORUM - QUality Of Service RoUting in Wireless Mesh Networks2007-06-13 Association for Computing Machinery
  Wireless Mesh Networks (WMNs) can provide seamless broadband connectivity to network users, with the advantage of low setup and maintenance costs. To support next-generation applications with real-time requirements, however, these networks must provide improved Quality of Service guarantees. Most current mesh network routing protocols are adapted from MANET protocols, and do not optimize for mesh network properties. This paper proposes QUORUM (QUality Of service RoUting in wireless Mesh networks), a routing protocol optimized for WMNs that addresses these drawbacks. QUORUM integrates a novel end-to-end packet delay estimation mechanism with stability-aware routing policies, allowing it to more accurately follow QoS requirements while minimizing misbehavior of selfish nodes.

Tags: Network Technologies, Mobile and Wireless