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Networking Terminology Tutorial for Business Continuity Planners | 2005-12-01 01:00:02 |
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Networking is one of the most important technology components of any IT infrastructure. This paper is a brief tutorial on the terminology and concepts of networking. It is intended to define and position the large number of networking technologies relative to each other, using the Open Systems Interconnect architecture to unify the technologies, and to promote a better understanding of many commonly used networking concepts, to better evaluate and select the appropriate networking components for your Business Continuity solution.
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Broadband in Africa: Getting It Right | 2005-12-23 01:01:54 |
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Broadband deployment in Africa is low and much of its infrastructure is obsolescent. African telecom operators, leveraging experience of operators in other regions, can plan the expansion of their access network architecture so advanced services can be implemented with minimal additional investment. The major trends affecting network architecture are triple play services, which require access network architectures based on FTTX (fibre-to-the-curb/node/home/building), and migration to NGN, which requires that the access nodes deployed be upgradeable to VoIP access gateways.
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Minimizing Maximum Fiber Requirement in Optical Networks | 2006-12-07 01:00:20 |
Alcatel-Lucent |
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This paper studies wavelength assignment in an optical network where each fiber has a fixed capacity of ́ wavelengths. Given demand routes, the aim is to minimize the maximum ratio between the number of fibers deployed on a link e and the number of fibers required on the same link e when wavelength assignment is allowed to be fractional. The main results are negative ones.
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Virtual I/O - Enabling the Utility Data Center | 2005-11-03 01:00:03 |
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I/O management is a key concern for system administrators deploying clustered servers. Many clusters have three disparate I/O requirements: LAN/WAN, SAN, and server-to-server communication. The conventional solution used to address these requirements is the installation of three separate networks. The cost and administrative burden of scaling and managing multiple networks is significant. This paper highlights the features of Cisco's Virtual I/O architecture and discusses how virtualization is performed with Ethernet and Fibre Channel networking technologies.
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Revenue Recovery for Operational SONET/SDH Networks | 2006-12-13 01:00:24 |
Optical Society of America |
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Large SONET/SDH networks typically have 20-30% "Stranded" resources, both in wasted bandwidth and in untracked hardware. This paper presents a novel approach that uses localized heuristics to uncover stranded resources and configuration errors based on field data alone. Unlike traditional solution which requires complex reconciliations between field data and various inventory databases, this approach synthesizes higher-level models from field data and analyzes the models to identify stranded resources and configuration errors. Field trial results indicate that the approach is very effective.
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Simulation of Power Evolution and Control Dynamics in Optical Transport Systems | 2006-12-07 01:00:20 |
Alcatel-Lucent |
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The design and analysis of control strategies for high-capacity, reconfigurable optical transmission systems require an understanding of optical system dynamics involving the time-dependent interaction of many components. This paper describes system simulation software that couples continuous physical-layer models of optical transmission components with discrete models for events such as channel add/drops. The simulator computes detailed time traces of signal and noise power propagation along a line system consisting of multiple controlled transmission elements and monitoring devices in response to a particular discrete event. Examples are given illustrating the rich variety of experimentation modes the software supports, including the evaluation of control algorithms, systematic exploration of design parameters, and investigation of cost reduction plans.
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Optical Fibers Pave the Way to Faster Broadband Access | 2005-10-11 03:00:02 |
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The broadband market is already global in scale, and it is expected that it will explode in the near future. Fiber access networks will provide the technological foundation for this development. As a leading supplier of broadband access networks, Alcatel has been driving forward the standardization and development of passive optical access technologies. These networks, which support the next generation of Ethernet/IP based communication, can provide video, voice and high speed data services to users at a competitive cost. While available solutions are already being deployed, new generation technologies will provide access to more subscribers at higher speeds and over longer fiber lengths.
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EMC Celerra NSX Analysis | 2005-07-05 03:00:02 |
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On April 18, 2005, EMC Corporation announced a new high-end Network Attached Storage product, the Celerra NSX. The NSX operates as a NAS gateway with EMC Symmetrix and/or CLARiiON storage attached via fibre channel in a Storage Area Network. EMC has a full complement of NAS offerings to cover different markets with the Celerra NSX at the high end.
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Government Intranet - Fiber Optic Net Work | 2005-08-30 03:00:02 |
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Following the introduction of Internet, there has been a growth in the number of internet users in the government as well as the private organizations. Many organizations, governmental and non governmental, having realized the potential of ICT, have installed or are in the process of installing data networks. A number of government-wide information systems, such as national accounting system, government-wide personnel information system (PIS), nation-wide geographical information system, and government web-portal have been developed but these systems are not widely used.
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National IFA Chooses HP ProCurve for Price and Performance | 2005-04-08 05:40:03 |
Hewlett-Packard |
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Alexander Forbes Financial Services has regional offices and is head quartered in Croydon. When it recently decided to move its 200 staff from one building to another, it was the ideal opportunity to replace the company's ageing network. ADA installed structured cabling for the new building with over 800 Category 5E outlets for voice and data along with a Gigabit fibre backbone across two floors of the new building. The legacy network infrastructure was replaced with a fault tolerant HP ProCurve backbone. VLANS (Virtual Local Area Networks) were then used to segment network traffic and all servers were connected over Gigabit Ethernet.
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