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 TitleDate AddedCompany
whitepaper QoS: What Is It? Why Do We Need It?2008-04-11 Global Knowledge
  Quality of Service (QoS) is the ability to treat packets differently as they transit a network device, based on the packet contents. Without QoS, all packets on the network vie for the same pool of resources, and when congestion occurs. QoS can be used to address issues such as slow applications, jerky video and poor sound quality. This paper will describe what QoS is and why you need it.

Tags: Network Management, Network Management, Network Technologies		   
whitepaper SLA-Based Service Composition in Enterprise Computing2008-04-02 North Carolina State University
  The composition of services has been a useful approach to integrating business applications within and across organizational boundaries. In this approach, individual services are federated into composite services which are able to execute a given task subject to a Service Level Agreement (SLA). An SLA is a contract agreed between a customer and a service provider who define a set of several Quality of Services (QoS). An SLA violation penalty is a way to ensure the credibility of an advertised SLA by a service provider. This paper considers a set of computer resources used by a service broker who represents service providers to host enterprise applications for differentiated customer services subject to an SLA and its violation penalty.

Tags: User Satisfaction		   
whitepaper Impact of QoS on Application Response Time2008-04-01 Research India Publications
  Quality of Service (QoS) recourses to the capability of a network to provide better service to selected network traffic over various technologies. This paper compares three different algorithms for packet queuing using the simulator program OpNet (OpNet is a network simulator, including a library of detailed protocol and application models (e.g. Voice, HTTP, TCP, IP), the Standard Model Library includes hundreds of vendor specific and generic device models including routers, switches, workstations, and packet generators). This paper supposes a corporation has developed a custom database application. This application stores corporate product information.   
whitepaper Expand Networks Optimizes WAN Performance and Prioritizes Applications at VT Group2008-04-01 Expand Networks
  VT Group plc with origins in the late 19th Century is an international government support services company with its roots in shipbuilding. After a series of acquisitions, VT Group had outgrown its existing network infrastructure and needed to immediately resolve WAN performance issues at branch offices where it had implemented a combination of Citrix, Oracle and web based applications. VT chose Expand Networks' Compass platform to address current application performance issues and provide the flexibility to accommodate the organization's future technology requirements. Deployment of the Expand Compass platform was chosen to tackle the bandwidth and compression issues that VT had which has led to improved performance and acceleration of all its applications.

Tags: Network Management, Network Management		   
whitepaper RAD Enables French Alternative Operator to Deliver Differentiated Services Over Ethernet to Enterprise Customers2008-03-03 RAD Data Communications
  Completel is the primary French telecommunications operator with a nationwide network dedicated to enterprise customers. The company wanted to facilitate the provisioning of differentiated services over Ethernet to enterprise customers. Completel's LAN-to-LAN data service has evolved into a feature-rich offering with options that have been introduced in response to customer demand. RAD's ETX line enables Completel to offer on the same physical link other value added services such as IP VPN, VoIP and Very High Rate Internet access with the same QoS guarantees it provides to LAN-to- LAN subscribers.

Tags: Network Management, LAN - WAN		   
whitepaper QoS Challenges and Opportunities in Wireless Sensor/Actuator Networks2008-02-21 Molecular Diversity Preservation International (MDPI)
  A Wireless Sensor/Actuator Network (WSAN) is a group of sensors and actuators that are geographically distributed and interconnected by wireless networks. Sensors gather information about the state of physical world. Actuators react to this information by performing appropriate actions. WSANs thus enable cyber systems to monitor and manipulate the behavior of the physical world. WSANs are growing at a tremendous pace, just like the exploding evolution of Internet. Supporting Quality of Service (QoS) will be of critical importance for pervasive WSANs that serve as the network infrastructure of diverse applications. To spark new research and development interests in this field, this paper examines and discusses the requirements, critical challenges, and open research issues on QoS management in WSANs.

Tags: Mobile and Wireless		   
whitepaper Cross-Layer Network Design for Quality of Services in Wireless Local Area Networks: Optimal Access Point Placement and Frequency Channel Assignment2008-02-19 Suranaree University of Technology
  This paper presents a novel network design algorithm for Wireless Local Area Networks (WLANs) considering optimal access point placement and frequency channel assignment problems. The proposed algorithm is a cross-layer approach, accounting the physical layer and the data link layer functionalities of the WLANs in the network design process. Specifically, a multi-objective optimization problem is defined. The proposed objective function separates the physical layer considerations and the data link layer contributions in order to differently change the weights of the two characteristics of WLANs. Numerical results are presented and the jointed impact of the physical and the data link layer functionalities on the WLAN quality of services are evaluated.

Tags: Network Management, Network Management		   
whitepaper Data Mining for Managing Intrinsic Quality of Service in MPLS2008-02-15 Riga Technical University
  Quality of Service (QoS) is more and more becoming a necessity for emerging applications carried by IP networks. Thus, dynamic admission control is a very important mechanism that aims, not only to ensure resources availability, but also to verify QoS constraints satisfaction. Nowadays traffic engineering is an essential ingredient for guaranteeing QoS and for efficient or cost effective resource utilization, design and operation of IP networks. MPLS (Multiprotocol Label Switching) is a standards-based technology that can improve network performance and QoS for select traffic. MPLS offers multiple classes of service, each associated with different locally significant labels in the packet header and the packets are forwarded by network nodes via label swapping types of traffic. MPLS uses short, fixed-length similar to layer 2 switching.

Tags: Data Tools, LAN - WAN		   
whitepaper New TechNet Webcast: Windows Server 2008 and Windows Vista Better Together Technologies (Level 200)2008-02-11 Microsoft
  The presenter of this webcast discusses many new features shared by the Windows Vista and Windows Server 2008 operating systems. The webcast start by talking about why Windows Server 2008 and Windows Vista are so closely related and how, together, they enable many new and exciting features that promote more efficient management. The attendee will learn about the new features that make data more available, such as improvements to offline files, client-side print rendering, the transactional file system, and policy-based Quality of Service (QoS).

Tags: Server Platforms - OS, Desktop Client OS		   
whitepaper QoS in Ethernet Access Ring2008-02-03 Indian Institute of Technology Madras
  Ethernet is being extended to Metro Area Networks (MAN) mainly due to its simplicity and low cost. However Ethernet protocols need extensions to succeed as MAN technology in terms of scalability, Quality of Service (QoS), resiliency and Operations, Administration and Maintenance. The QoS mechanism existing in Ethernet is localized to each node and affected by the spatial properties. Hence in order to enhance the QoS level in Ethernet, a distributed QoS mechanism is required which ensures fairness and bandwidth guarantees. The paper proposes one such approach for Ethernet Access Ring in this paper. The mechanism ensures global fairness in the access ring that gives every node in the ring a fair share of the ring bandwidth.

Tags: Network Management