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 TitleDate AddedCompany
whitepaper HybridCast: A Hybrid Probabilistic/Deterministic Approach for Adjustable Broadcast Reliability in Mobile Wireless Ad Hoc Networks2009-06-01 University of Illinois at Urbana-Champaign
  Broadcast is a crucial yet expensive building block for many applications in bandwidth-scarce mobile wireless ad hoc networks. The paper proposes a hybrid deterministic/probabilistic, decentralized broadcast protocol with adjustable broadcast reliability and overhead. The paper first proposes a purely probabilistic, topology-aware broadcast algorithm. The probabilistic broadcast adjusts each node's broadcast forwarding probability locally such that the average broadcast reliability requirement is met. An extension of the probabilistic broadcast to tolerate node mobility and packet loss is then presented. Furthermore, the paper augments the proposed probabilistic broadcast scheme with an existing deterministic broadcast protocol in order to reduce excessive broadcast overhead.

Tags: Mobile and Wireless		   
whitepaper Veritas Storage Foundation for Windows: Dynamic Multi-Pathing Competitive Comparisons2009-05-01 Symantec
  Multi-pathing software provides the intelligence necessary to manage multiple I/O paths between a server and a storage subsystem. When configured for redundancy, a single path is dedicated to I/O transfer, while other paths are in standby mode. The software manages failover between the I/O paths, thus eliminating the potential for a single point of failure. If connectivity along one path to a storage device is interrupted, the multi-pathing software dynamically switches I/Os to a surviving path, allowing application access to continue unimpeded. The other mode of operation allows for all paths to be utilized for I/O transfer. This can improve performance by leveraging the presence of these multiple paths, increasing the available bandwidth for I/O traffic.

Tags: Software Development Tools, Management		   
whitepaper Application Delivery over the WAN: Acceleration Alone is not Enough2009-05-01 Riverbed
  Looking to maximize IT performance by leveraging WAN optimization solutions across your entire organization? Today, the simple fact is that acceleration alone is not enough. In this report, Aberdeen Group report examines best practices for managing application performance over the wide area network. No matter where your company is at in the process, this report can help you achieve success in accelerating performance and cost savings.

Tags: LAN - WAN, Network Management, Network Management, LAN - WAN		   
whitepaper LTE - An Optimized OFDMA Solution for Wider Bandwidth Spectrum2009-05-01 Qualcomm
  LTE is an optimized mobile OFDMA solution that continues 3G's track record of mobility and high spectral efficiency. It leverages new and wider bandwidth spectrum to boost data capacity in dense urban areas. 3G and its evolutions will continue to provide ubiquitous broadband coverage outside LTE areas as well as voice services throughout the network. LTE and 3G evolutions provide similar performance as they both leverage the same enhancements. Designed for seamless interoperability with 3G networks and their evolutions, LTE allows operators to capitalize on existing HSPA/EV-DO and future HSPA+/EV-DO Rev. B investments. LTE/3G multimode devices play a pivotal role in LTE deployments. Qualcomm with its industry's first multimode chipset solutions is in a unique position to support timely LTE deployments.

Tags: Mobile and Wireless		   
whitepaper Troubleshooting Slow Networks with Wireshark2009-04-23 Global Knowledge
  Wireshark, the world's most popular open-source network analyzer, has become an essential tool to locate and diagnose the cause of network problems in the most efficient and cost-effective method possible. In March 2009, the Wireshark Certification Program was released to validate a candidate's knowledge of Wireshark functionality, TCP/IP troubleshooting, and network forensics/security. In this white paper, we examine how to use Wireshark to troubleshoot some of the top causes of poor network performance.

Tags: Network Management, Network Management, Intrusion - Tampering, Security Administration		   
whitepaper ThriftyTorrent: Cheap P2P Software Patch Distribution for Enterprise Networks2009-04-21 Hewlett-Packard (HP)
  This paper presents a peer-to-peer method of distributing software patches or other data in an enterprise network, which aims to minimize the cost of bandwidth used subject to a specified quality of service in the form of a target download rate. In enterprise networks, the bandwidth of some links (e.g. transatlantic leased lines) may be charged by use, at high rates compared to the cost of traffic on local links. They obtained data from one enterprise patch server that served 7,355 machines in a large enterprise network over 66 days: on a peak day it sent a total of over a Terabyte of data in response to requests from five continents, and on an average day it sent over 50 GB of data.

Tags: Network Technologies, Network Management		   
whitepaper Air Distribution Architecture Options for Mission Critical Facilities2009-04-08 American Power Conversion (APC)
  There are nine basic ways to use air to cool equipment in data centers and network rooms. These methods vary in performance, cost, and ease of implementation. These methods are described along with their various advantages. The proper application of these cooling techniques is essential knowledge for Information Systems personnel as well as Facilities Managers.

Tags: Network Technologies, Network Management, Data Infrastructure, LAN - WAN		   
whitepaper Experimental Comparison of Bandwidth Estimation Tools for Wireless Mesh Networks2009-03-28 Institute of Electrical and Electronics Engineers
  Measurement of available bandwidth in a network has always been a topic of great interest. This knowledge can be applied to a wide variety of applications and can be instrumental in providing Quality of Service to end users. Several probe-based tools have been proposed to measure available bandwidth in wired networks. However, the performance of these tools in the realm of wireless networks has not been evaluated extensively. In recent years, there has also been some work on estimating bandwidth in wireless networks via passively monitoring the channel and determining the 'Busy' and 'Idle' periods. However, such techniques have primarily been evaluated via simulations only.

Tags: Mobile and Wireless		   
whitepaper What is a Network Switch vs. a Router?2009-02-25 Cisco Systems
  What is a network switch and what is a router? The two pieces of equipment look similar and perform some similar functions, but each has its own distinct function to perform on a network.

Tags: IT Infrastructure, LAN - WAN, Network Management, LAN - WAN		   
whitepaper Basic Networking: What You Need to Know2009-02-25 Cisco Systems
  Basic networking consists of two essential pieces of equipment: switches and routers. If you know how this hardware works, you'll have a fundamental understanding of basic networking as well. Knowing more about basic networking can help you make better decisions about the network design, services, and features your business needs to implement in order to thrive.

Tags: Network Management, Network Management, Security Administration, Network Management