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Author : Carla Sadtler
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (3 download)
Download or read book Load Balancing for ENetwork Communications Servers written by Carla Sadtler and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tony Bourke
Publisher : "O'Reilly Media, Inc."
ISBN 13 : 0596000502
Total Pages : 192 pages
Book Rating : 4.5/5 (96 download)
Download or read book Server Load Balancing written by Tony Bourke and published by "O'Reilly Media, Inc.". This book was released on 2001 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a guide to the technology that is changing the way e- commerce sites, web infrastructures, and corporate networks are designed and implemented. Load balancing overcomes many of the scaling and flexibility obstacles that e-commerce sites and large corporate networks face today. "Server Load Balancing explains the concepts of load balancing and offers consistent terminology and practical guidance for planning and implementing it in most environments. It includes a configuration guide with diagrams and sample configurations for installing, configuring, and maintaining products from four major vendors: Alteon WebSystems, Cisco's CSS Series (formerly ArrowPoint), F5's BIG-IP, and the Foundry ServerIron series. By comparing several load balancing products, "Server Load Balancing enables a deeper understanding of the technology. No system administrator responsible for traffic management should be without this practical guide.
Author : Roger Doss
Publisher : GRIN Verlag
ISBN 13 : 365630968X
Total Pages : 143 pages
Book Rating : 4.6/5 (563 download)
Download or read book Load Balancing on Multimedia Client-Server Communication Networks: Computer Experiments written by Roger Doss and published by GRIN Verlag. This book was released on 2012-11-14 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Project Report from the year 2001 in the subject Computer Science - Applied, grade: A, , course: Server Load Balancing, language: English, abstract: To design and implement an algorithm which, given the inputs of work cost, backlogs, and tasks for multiple servers, produces an output of work distributions (loads) for all servers and tasks in the system such that the time spans are minimal and, if possible, balanced. That is, the algorithm finds the optimal distribution for M tasks and N servers. The project focuses on an algorithm for three server load balancing, and then attempts to generalize the algorithm to four and five servers. The system being considered consists of multiple servers represented as rows of a matrix, and multiple tasks, represented as columns of a matrix. Backlogs indicate the amount of work already being handled by a given server. Time spans indicate the run time associated with running several tasks on a server. Tasks can be of any type of work; however, the algorithm is conceptually focused on multimedia tasks. The data initially has been provided as integers. The system is mathematically modeled as a system of linear inequalities, therefore it is a member of the “Linear Programming” class of problems.
Download or read book Network World written by and published by . This book was released on 1999-12-06 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.
Author : Louis Bahij Harik
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (787 download)
Download or read book Design and Implementation of an FPGA-based Load Balancer for Internet Servers written by Louis Bahij Harik and published by . This book was released on 2003 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reliability and high performance are essential feature of any Internet service. Servers for web hosting, email, e-commerce, multimedia and file transfer have to maintain high availability and excellent response time in order to provide an acceptable service. However, due to inevitable software and hardware failures or scheduled maintenance, servers go down causing loss of service. One solution to this problem is server redundancy, one form of which is server load balancing (SLB), which is the topic of this thesis. LB refers to the idea of having a farm of servers serving the same type of requests. In order to coordinate the operation of the multiple parallel servers, a load balancer is needed. One approach to load balancing is to take a packet coming from the Internet manipulate the packet, and give it to the "best" server, where "best" can be defined to mean fastest, least-loaded, cheapest, most available, etc. This type of load balancing can be implemented in software, in hardware, or using a combination of hardware and software. In this thesis, we propose to build the core of the load balancer in hardware using a field programmable gate array (FPGA). An FPGA is an array of reconfigurable logic blocks, which can be linked together to perform a complex logic function, such as that of a microprocessor. The implemented load balancer performs a double rewriting on the packets (requests and replies) using Network Address Translation. The design was tested using a testbench with varying network speeds and bursts. The load balancer can forward one million packets per second with a typical delay of 1.5microsecond. The simulations were performed on Ethernet networks with speeds of 10 Mbps, 100 Mbps and 1 Gbps.
Author : Miquel Talavera Foix
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (112 download)
Download or read book Load Balancing Control of a Server Network Cluster written by Miquel Talavera Foix and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Faced with increasing network services and number of users, requests to the servers at those sites has signi cally skyrocketed. Moreover, most of these servers need to run twenty-four hours a day, 7 days a week with a high reliability and availability. Consequently, the tremendous growth of the Internet has led the requirement of multiserver structures in order to deal with these e ectiveness issues. A much higher processing power may be provided by a set of computational elements than by a single one, even if it presents a powerful capacity. Additionally, the global system throughput may greatly increase by using properly these architectures. However, to make an e cient server network is a di cult task. This is the main goal of this dissertation. E ciency may be increased if server network works in cooperation, distributing the load. This is known as "load balancing". This technique may make that network is robust and e cient, that means, overload are avoided at the same time that system resources are well exploited. Assuming that all servers present a same architecture, a deterministic dynamical model is designed and a distributed control law inspired by consensus theory is developed. In this way, the closed-loop ensures load balancing as well as asymptomatically stability. Moreover, thanks to decentralized control, computational load is reduced and scalability is possible. On the other hand, an attraction domain is estimated to ensure positive rates. The e ectiveness of the distributed control is validated by simulations in Matlab & Simulink and Network Simulator 2.
Author : Kornel Terplan
Publisher : Routledge
ISBN 13 : 1351437321
Total Pages : 334 pages
Book Rating : 4.3/5 (514 download)
Download or read book Intranet Performance Management written by Kornel Terplan and published by Routledge. This book was released on 2022-01-27 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: To avoid serious bottlenecks, components of the Internet and of intranets-such as servers, browsers, and the access networks-must be properly designed, implemented, managed, and monitored. Beginning with the basics, Intranet Performance Management sets forth the standards, methods, and tools that can simplify and unify systems and network management, avoid the seemingly inherent problems associated with them, and contain costs. In this book, world reknowned expert Kornel Terplan addresses: Proactive server, browser, and access network monitoring Managing and authoring home page content Traffic management and load balancing in the access networks Reviewing and evaluating usage statistics using log files These tasks-essential to the success of an intranet-require the active and diligent work of the management team. Effective performance of these tasks allows for the use of inexpensive browsers, facilitates education, and improves Internet culture and scalability.
Author : Shreya Pandita
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.:/5 (88 download)
Download or read book OpenFlow Based Load Balancing and Proposed Theory for Integration in VoIP Network written by Shreya Pandita and published by . This book was released on 2013 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today's internet world with such a high traffic, it becomes inevitable to have multiple servers representing a single logical server to share enormous load. A very common network configuration consists of multiple servers behind a load balancer. The load balancer determines which server would service a clients request or incoming load from the client. Such a hardware is expensive, runs a fixed policy or algorithm and is a single point of failure. In this paper, we will implement and analyze an alternative load balancing architecture using OpenFlow. This architecture acquires flexibility in policy, costs less and has the potential to be more robust. This paper also discusses potential usage of OpenFlow based load balancing for media gateway selection in SIP-PSTN networks to improve VoIP performance.
Author : Suyash Varma
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (936 download)
Download or read book On the Selection of Servers by Load Balancing of Network Traffic for Content-Streaming Data Centers written by Suyash Varma and published by . This book was released on 2016 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Servio Lima Reina
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (492 download)
Download or read book Design, Implementation, and Evaluation of Multiple Load Balancing Systems Based on Network Processor Architecture written by Servio Lima Reina and published by . This book was released on 2001 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: "Load balancing has traditionally being used [sic] as the way of share the workload among a set of available resources. In a web server farm, load balancing allows the distribution of user requests among the web servers in the farm. In this paper, we have studied the implementation of load balancing applications using Intel PA100 network processor. We consider the load balancer as a front-end device to a server cluster that directs incoming requests to the back-end servers. Specifically, we have compared implementations of three modern load-balancing architectures and the impact of design issues on the performance of network processor applications. We demonstrate that among CPU and memory resources in PA100, memory appears as the main cause of bottleneck due to the high level of memory contention and we can achieve at least 57% of better performance if we increase the speed of DRAM. This is true for all load-balancing systems implemented and evaluated. We finally demonstrate that even in the worst-case scenario, a more powerful network processor named Intel IXP1200 is able to perform 43% better than its PA100 counterpart."
Download or read book Network World written by and published by . This book was released on 1999-12-06 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.
Author : Jinxuan Wu
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (939 download)
Download or read book A Network Function Virtualization Based Load Balancer for TCP written by Jinxuan Wu and published by . This book was released on 2015 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A load balancer is an essential part of many network systems. A load balancer is capable of dividing and redistributing incoming network traffic to different back end servers, thus improving reliability and performance. Existing load balancing solutions can be classified into two categories: hardware-based or software-based. Hardware-based load balancing systems are hard to manage and force network administrators to scale up (replacing with more powerful but expensive hardware) when their system can not handle the growing traffic. Software-based solutions have a limitation when dealing with a single large TCP flow. In recent years, with the fast developments of virtualization technology, a new trend of network function virtualization (NFV) is being adopted. Instead of using proprietary hardware, an NFV network infrastructure uses virtual machines running to implement network functions such as load balancers, firewalls, etc. In this thesis, a new load balancing system is designed and evaluated. This system is high performance and flexible. It can fully utilize the bandwidth between a load balancer and back end servers compared to traditional load balancers such as HAProxy. The experimental results show that using this NFV load balancer could have $n$ ($n$ is the number of back end servers) times better performance than HAProxy. Also, an extract, transform and load (ETL) application was implemented to demonstrate that this load balancer can shorten data load time. The experiment shows that when loading a large data set (18.3GB), our load balancer needs only 28\% less time than traditional load balancer.
Author : Hiroshi Nishida
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (754 download)
Download or read book Optimal Load and Resource Balance in Internet Distributed Systems written by Hiroshi Nishida and published by . This book was released on 2011 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: A distributed system is a network of multiple autonomous computational nodes designed primarily for performance scalability and robustness. The performance of a distributed system depends critically on how tasks and resources are distributed among the nodes. Thus, a main thrust in distributed system research is to design schemes for distributing computational loads and resource sharing in ways that boost the overall system performance. For many Internet distributed systems such as Peer-to-Peer (P2P) networks, the optimization of loads and resource sharing become even more important due to the higher costs of communication and management of nodes located geographically far part. Furthermore, in many P2P-based systems, nodes are individual users who ultimately decide whether they want to contribute their computer resources to the system. As a result, in addition to the system performance consideration from the engineering perspective, many recently proposed resource and task distribution schemes are designed to provide incentives to users, in such a way to promote resource sharing and enhancing system performance. In this dissertation, we study different approaches for optimizing performance of distributed systems. Specifically, the dissertation is focused on "balancing" resources and loads on each node to improve the performance for two important models of distributed systems. In the first model, we study incentive mechanisms to promote cooperation of users in P2P networks. In a typical file sharing P2P network, there are uncooperative peers, or free riders who only download data from other peers without sharing their data with others. As a result, upload bandwidth of cooperative peers are saturated, but those of uncooperative peers are unused. This leads to overall low system utilization and performance degradation. This dissertation proposes a scalable, decentralized mechanism to efficiently prevent free riding, and to increase system performance. The key ingredient of the proposed mechanism is to balance the amounts of upload and download data of each peer using the notion of global contribution which can be efficiently calculated in a distributed manner. In the second model, we consider a class of distributed server systems that can be used as the underlying engines for many Internet applications, especially social networking applications. Such a system consists of a large number of clients who communicate with each other indirectly via a number of intermediate servers. Optimizing the overall performance of such a system then can be formulated as a client-server assignment problem whose aim is to assign the clients to the servers in such a way to satisfy some pre-specified requirements on the communication cost and load balancing. We propose to solve this client-server assignment problem via relaxed convex optimization techniques. The simulation results indicate that the proposed approach produces superior performance than many other popular heuristics.
Author : Derek DeJonghe
Publisher :
ISBN 13 : 9781492037996
Total Pages : pages
Book Rating : 4.0/5 (379 download)
Download or read book Load Balancing in the Cloud written by Derek DeJonghe and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Anthony Bruno
Publisher : Cisco Press
ISBN 13 : 0132372142
Total Pages : 859 pages
Book Rating : 4.1/5 (323 download)
Download or read book CCDA 640-864 Official Cert Guide written by Anthony Bruno and published by Cisco Press. This book was released on 2011-06-09 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the eBook version of the print title. Note that the eBook does not provide access to the practice test software that accompanies the print book. Trust the best selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for exam success. They are built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam. CCDA 640-864 Official Cert Guide presents you with an organized test preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and enable you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks help you drill on key concepts you must know thoroughly. Master Cisco CCDA 640-864 exam topics Assess your knowledge with chapter-opening quizzes Review key concepts with exam preparation tasks CCDA 640-864 Official Cert Guide, focuses specifically on the objectives for the Cisco CCDA DESGN exam. Expert networking consultants Anthony Bruno and Steve Jordan share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. Material is presented in a concise manner, focusing on increasing your understanding and retention of exam topics. Well-regarded for its level of detail, assessment features, comprehensive design scenarios, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that will enable you to succeed on the exam the first time. The official study guide helps you master all the topics on the CCDA DESGN exam, including: Network design methodology Network structure models Enterprise LAN and data center design Enterprise network virtualization Wireless LAN design WAN technologies and design IPv4 and IPv6 RIP, EIGRP, OSPF, and BGP Route summarization and route filtering Security solutions Voice and video design Network management protocols CCDA 640-864 Official Cert Guide is part of a recommended learning path from Cisco that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit www.cisco.com/go/authorizedtraining.
Download or read book Network World written by and published by . This book was released on 2002-04-29 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 20 years, Network World has been the premier provider of information, intelligence and insight for network and IT executives responsible for the digital nervous systems of large organizations. Readers are responsible for designing, implementing and managing the voice, data and video systems their companies use to support everything from business critical applications to employee collaboration and electronic commerce.
Author :
Publisher :
ISBN 13 :
Total Pages : 1134 pages
Book Rating : 4.3/5 (91 download)
Download or read book Informationweek written by and published by . This book was released on 1998 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
