Member Login

E-mail:    Password:  




 TitleDate AddedCompany
whitepaper A Scheme for Real-Time Channel Establishment in Wide-Area Networks2008-01-01 University of California
  Multimedia communication involving digital audio and/or digital video has rather strict delay requirements. A real-time channel is defined in this paper as a simplex connection between a source and a destination characterized by parameters representing the performance requirements of the client. A real-time service is capable of creating real-time channels on demand and guaranteeing their performance. These guarantees often take the form of lower bounds on the bandwidth allocated to a channel and upper bounds on the delays to be experienced by a packet on the channel. This paper studies the feasibility of providing real-time services on a packet-switched store-and-forward wide-area network with general topology.

Tags: LAN - WAN, Software Development Tools		   
whitepaper Foundry Networks Stakes Claim on Property Asset Management Company2008-01-01 Foundry Networks
  Capital & Regional is a co-investing property asset management company with £6.5 billion worth of property under its management. The company wanted to centralize the majority of core business systems at a co-location center in East London operated by Interxion. The challenge was to ensure network uptime and reliability through application switching and load balancing. Capital & Regional selected Foundry Networks' ServerIron technology to provide the all-important application switching and traffic management capabilities for its core data applications, Voice over IP (VoIP), and e-commerce traffic. Foundry's ServerIron 850 Series switch technology, which provides scalability to 10 Gigabit Ethernet, serves as the basis for Capital & Regional's network architecture.

Tags: LAN - WAN, LAN - WAN		   
whitepaper Building Smarter WAN Connectivity: An Introduction to WAN Link Management and Its Benefits for IT Decision Makers2008-01-01 Elfiq Networks
  The relentless pressure to reduce costs, increase network performance, improve productivity, and meet regulatory requirements and business continuity needs are a constant battle for the information technology and telecommunications groups of any organizations. With the Layer-2 link balancing technologies that have entered the market place in the past few years, these objectives now can be met and exceeded, while reducing the complexity of telecommunications infrastructures. Wide Area Networks (WANs) can now enjoy the same levels of performance and reliability as Local Area Networks (LANs). This paper explores how organizations can benefit from Layer-2 link management and its applications to build smarter WAN implementations.

Tags: LAN - WAN		   
whitepaper Bandwidth Constrained Placement in a WAN2008-01-01 Association for Computing Machinery
  This paper examines the bandwidth-constrained placement problem, focusing on trade-offs appropriate for Wide Area Network (WAN) environments. The goal is to place copies of objects at a collection of distributed caches to minimize expected access time from distributed clients to those objects subject to a maximum bandwidth constraint at each cache. A simple algorithm is developed to generate a bandwidth-constrained placement by hierarchically defining an initial per-cahe greedy placement. This paper proves that this hierarchical algorithm generates a placement whose expected access time is within a constant factor of the optimal placement's expected access time.

Tags: Network Management		   
whitepaper Scaling Byzantine Fault-Tolerant Replication to Wide Area Networks2008-01-01 Johns Hopkins University
  This paper presents the first hierarchical Byzantine fault-tolerant replication architecture suitable to systems that span multiple wide area sites. The architecture confines the effects of any malicious replica to its local site, reduces message complexity of wide area communication, and allows read-only queries to be performed locally within a site for the price of additional hardware. A prototype implementation is evaluated over several network topologies and is compared with a flat Byzantine fault-tolerant approach.

Tags: Server Hardware		   
whitepaper Advanced Indexing Techniques for Wide-Area Network Monitoring2008-01-01 University of Southern California
  Detecting and unraveling incipient coordinated attacks on Internet resources requires a distributed network monitoring infrastructure. Such an infrastructure will have two logically distinct elements: distributed monitors that continuously collect packet and flow-level information, and a distributed query system that allows network operators to efficiently and rapidly access this information. The paper argues that, in addition to supporting other types of queries, the network monitoring query system must support multi-dimensional range queries on traffic records (flows, or aggregated flow records). The paper discusses the design of MIND, a distributed indexing system which supports the creation of multiple distributed indices that use proximal hashing to scalably respond to range queries.

Tags: Network Management		   
whitepaper Accelerate Applications Using Cisco Wide Area Application Services (WAAS) Mobile2008-01-01 Cisco Systems
  Cisco Wide Area Application Services (WAAS) Mobile provides industry-leading application acceleration and Wide Area Network (WAN) optimization capabilities for networks and applications to make them work better for mobile enterprise users and telecommuters. With its thorough understanding of the application protocols needed to safely optimize communications, use of file caching to reduce unnecessary data transfers and WAN use, and use of best-in-class WAN optimizations, Cisco WAAS Mobile provides IT organizations with the capability to provide safer and faster access to TCP-based enterprise applications today.

Tags: Mobile and Wireless		   
whitepaper Secure Distributed Co-Simulation Over Wide Area Networks2007-12-21 Linkoping University
  Modeling and simulation often require different tools for specialized purposes, which increase the motivation to use co-simulation. Since physical models often are describing enterprises' primary know-how, there is a need for a sound approach to securely perform modeling and simulation. This paper discusses different possibilities from a security perspective, with focus on secure distributed co-simulation over Wide Area Networks (WANs), using Transmission Line Modeling (TLM). An approach is outlined and performance is evaluated both in a simulated WAN environment, and for a real encrypted co-simulation between Sweden and Australia. It is concluded that several parameters affect the total simulation time, where especially the network delay (latency) has a significant impact.

Tags: Security Administration		   
whitepaper How Cisco IT Controls Building Security Over the Enterprise WAN2007-12-19 Cisco Systems
  Several years ago, faced with security systems that were deployed with minimal or no managerial oversight, Cisco began searching for a way to address the need to centralize and improve physical security management. The solution had to address global integration and service and support issues for all these disparate system, as well provisions for universal building access cards unique to each user. Cisco Security, Technology & Systems (STS) developed a centralized server architecture based on a single set of equipment standards, supported by regional security servers worldwide. Cisco also standardized the access-control and alarm systems at every site, and supports them with a single set of software tools.

Tags: Intrusion - Tampering, Security Administration		   
whitepaper How Cisco IT Redesigned India WAN to Improve Communications and Connectivity2007-12-18 Cisco Systems
  Cisco Systems, like many large technology enterprise companies, has had operations in India for many years. Initially, these operations had a manufacturing and development focus. More recently, however, the focus has broadened to include branches of the Cisco Global Technical Response Center (GTRC), which manages internal technical support; the Cisco Operations Communications Center (OCC), which manages internal incident response; and several call centers. This case study describes Cisco IT's internal deployment of high-speed WAN links to Cisco intranet and extranet sites located in India. Customers can draw on Cisco IT's real-world experience in this area to help support similar enterprise needs.

Tags: Internet and Web, Internet and Web