Recent ATM White Papers, Webcasts and Case Studies - ZDNet
Recent ATM White Papers, Webcasts and Case Studies - ZDNet

• Evaluation of the Available Bit Rate Service Category in ATM Networks
  This paper evaluates various aspects of the ABR flow control schemes using three different evaluation techniques: analysis, simulation and experiments. A discrete-time Markov model allows the evaluation of the influence of different system parameters (distance between source and switch, burstiness of CBR/VBR traffic, time in between computation of Allowed Cell Rate and burstiness of ABR traffic)) on the ABR traffic throughput and the ABR buffer requirements. This study leads to some simple engineering rules for the ABR service category. The paper investigates through simulation the ability of the ERICA+ switch algorithm to provide minimum throughput guarantees to Internet TCP/IP traffic.
• Performance of TCP Over ABR With Long-Range Dependent VBR Background Traffic Over Terrestrial and Satellite ATM Networks
  Compressed video is well known to be self-similar in nature. VBR carrying long-range dependent, multiplexed MPEG-2 video sources traffic is modeled. The actual traffic for the model is generated using fast-fourier transform of the fractional gaussian noise sequence. Our model of compressed video sources bears similarity to an MPEG-2 transport stream carrying video, i.e., it is long-range dependent and generates traffic in a piecewise constant bit rate manner. This paper studies the effect of such VBR traffic on ABR carrying TCP traffic. The effect of such VBR traffic is that the ABR capacity is highly variant. It was found that a switch algorithm like ERICA+ can tolerate this variance in ABR capacity while maintaining high throughput and low delay.
• Capgemini Success Story: Citibank Taiwan
  Citibank Taiwan wanted to focus on core competence, to reduce the costs of Applications Management in Technology Service Group, and to leverage external professional resources on application management. Capgemini provided Applications Management services for Citibank GCB Taiwan in ATM, AVR & Internet Banking Authorization Front-End Systems, PC LAN application systems (including Lotus Notes and some MIS applications), Credit Card application systems, and data mining (using SAS). From April 2002, Capgemini also delivers Internet applications development and testing to Citibank Asia Pacific PC Banking COE (Center of Excellence). Technology of Citibank Taiwan is now able to focus on project management rather than coding.
• Cashferium Helps Retailers and Banks Cut Costs by Keeping Cash Flow Local
  With banks and retailers spending some ?50 billion each year on the handling of cash, the incentive for reducing the amount of cash in transit - one of the main sources of this cost - is powerful. However, with banks and retailers separated by a mountain of disparate processes and systems, the goal of a shorter cash cycle has yet to be realized. Startup Cashferium created a whole new process framework for the exchange of cash between retailers, banks and their ATMs. Cashferium then engaged IBM to help define and optimize these processes, and to create a secure, flexible platform for delivering - and continually adapting - its service.
• Providing Rate Guarantees to TCP Over the ATM GFR Service
  The ATM Guaranteed Frame Rate (GFR) service is intended for best e ort traffic that can benefit from minimum throughput guarantees. Edge devices connecting LANs to an ATM network can use GFR to transport multiple TCP/IP connections over a single GFR VC. These devices would typically multiplex VCs into a single FIFO queue. It has been shown that in general, FIFO queuing is not sufficient to provide rate guarantees, and per-VC queuing with scheduling is needed. It shows that under conditions of low buffer allocation, it is possible to control TCP rates with FIFO queuing and buffer management. The paper presents analysis and simulation results on controlling TCP rates by buffer management.
• SOAP Message Size Performance Considerations
  This paper examines performance when using different SOAP message sizes in CICS Web Services. The paper also reviews a customer scenario, DanskeBank. It provides an overview of the bank's ATM system, and briefly discusses the IFX framework. Use of WebSphere Developer for zSeries (WD/z) to simulate request messages from an ATM is detailed, a performance comparison between optimized and non-optimized schema versions is also presented, and schema versus container definitions, large fields, and schema complexity is covered. Finally, the paper provides an example of the impact of mapping levels.
• Wachovia Enhances Security, Manageability of ATMs While Reducing Site Visits, Costs
  Wachovia wanted to reduce the time and expense of managing its ATM network. So, the company added its ATM network to its Active Directory service in Windows Server 2003. Executives say they gain "Peace of mind" from the benefits of centrally managed security, including remote troubleshooting that reduces site visits and costs. Microsoft and NCR provided best practices, technology, industry expertise, and support for the solution.
• Windows ATMs - Secure, Well-Managed, and Ready for the Future
  With a large swing in the ATM channel from 15-year-old technology to the Windows platform comes both opportunity and peril. The presenter of this webcast discusses about how banks and other ATM deployers are making sure their Windows-based ATMs are both secure and taking advantage of the rich management functionality of the Windows platform.
• A VC-Based API for Renegotiable QoS in Wireless ATM Networks
  Quality of Service (QoS) support for multimedia applications has been widely discussed in the context of high speed wired networks. As interest increases in wireless ATM networks that extend the connection to a wireless endpoint, the issue of QoS over a wireless link has to be addressed. This paper focuses on the pr provision of QoS at the application level in a wireless environment. The work includes the design of an Application Programming Interface (API) that allows applications to specify and renegotiate the QoS level during a call; as well as the implementation of such API in a wireless ATM testbed: the SWAN system.
• An Efficient Mobile IP-Wireless ATM Interworking for Mobile Computing
  Next generation wireless networks are expected to offer a range of services to mobile users, including voice, video, conventional data and internet services in an integrated fashion. This paper identifies the issues in internetworking of Wireless ATM with Mobile IPv6. The mobility features of both Wireless ATM and Mobile IPv6 are exploited to achieve efficient interworking. The paper defines the necessary protocol signaling for Mobile IP-ATM interworking mobility management procedures.
• Quality of Service Networking
  Quality of Service (QoS) refers to the capability of a network to provide better service to selected network traffic over various technologies, including Frame Relay, Asynchronous Transfer Mode (ATM), Ethernet and 802.1 networks, SONET, and IP-routed networks that may use any or all of these underlying technologies. The primary goal of QoS is to provide priority including dedicated bandwidth, controlled jitter and latency (required by some real-time and interactive traffic), and improved loss characteristics. Also important is making sure that providing priority for one or more flows does not make other flows fail. QoS technologies provide the elemental building blocks that will be used for future business applications in campus, WAN and service provider networks.
• Automated Windows and Desktop Management: M&T Bank
  Headquartered in western New York, M&T Bank is a regional bank recognized for its financial strength, sound management and superior customer service. Not only the company wanted to automate the management of their ATMs, the bank also wanted to automate desktop management and reduce the amount of IT time spent physically visiting individual desktops. To manage its Windows ATM environment, M&T Bank evaluated 10 different software vendors including Microsoft SMS, Altiris, LANDesk and others, before narrowing its search to Novell ZENworks and CA Unicenter. After an in-house evaluation, M&T bank selected Novell ZENworks to manage its ATMs, as well as more than 15,000 desktops. ZENworks Desktop Management provided a winning combination of features.
• Migrating an Enterprise WAN From ATM to IP
  Lately, the telecommunications industry has deemphasized ATM in favor of IP. Providers are rapidly building IP infrastructure and offering lower-cost IP services. To take advantage of thi