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EBookClubs

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Book Designing Networks and Services for the Cloud

Download or read book Designing Networks and Services for the Cloud written by Huseni Saboowala and published by Cisco Press. This book was released on 2013-05-16 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing Networks and Services for the Cloud Delivering business-grade cloud applications and services A rapid, easy-to-understand approach to delivering a secure, resilient, easy-to-manage, SLA-driven cloud experience Designing Networks and Services for the Cloud helps you understand the design and architecture of networks and network services that enable the delivery of business-grade cloud services. Drawing on more than 40 years of experience in network and cloud design, validation, and deployment, the authors demonstrate how networks spanning from the Enterprise branch/HQ and the service provider Next-Generation Networks (NGN) to the data center fabric play a key role in addressing the primary inhibitors to cloud adoption–security, performance, and management complexity. The authors first review how virtualized infrastructure lays the foundation for the delivery of cloud services before delving into a primer on clouds, including the management of cloud services. Next, they explore key factors that inhibit enterprises from moving their core workloads to the cloud, and how advanced networks and network services can help businesses migrate to the cloud with confidence. You’ll find an in-depth look at data center networks, including virtualization-aware networks, virtual network services, and service overlays. The elements of security in this virtual, fluid environment are discussed, along with techniques for optimizing and accelerating the service delivery. The book dives deeply into cloud-aware service provider NGNs and their role in flexibly connecting distributed cloud resources, ensuring the security of provider and tenant resources, and enabling the optimal placement of cloud services. The role of Enterprise networks as a critical control point for securely and cost-effectively connecting to high-performance cloud services is explored in detail before various parts of the network finally come together in the definition and delivery of end-to-end cloud SLAs. At the end of the journey, you preview the exciting future of clouds and network services, along with the major upcoming trends. If you are a technical professional or manager who must design, implement, or operate cloud or NGN solutions in enterprise or service-provider environments, this guide will be an indispensable resource. * Understand how virtualized data-center infrastructure lays the groundwork for cloud-based services * Move from distributed virtualization to “IT-as-a-service” via automated self-service portals * Classify cloud services and deployment models, and understand the actors in the cloud ecosystem * Review the elements, requirements, challenges, and opportunities associated with network services in the cloud * Optimize data centers via network segmentation, virtualization-aware networks, virtual network services, and service overlays * Systematically secure cloud services * Optimize service and application performance * Plan and implement NGN infrastructure to support and accelerate cloud services * Successfully connect enterprises to the cloud * Define and deliver on end-to-end cloud SLAs * Preview the future of cloud and network services

Book Top down Network Design

Download or read book Top down Network Design written by Priscilla Oppenheimer and published by Cisco Press. This book was released on 2004 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systems analysis approach to enterprise network design Master techniques for checking the health of an existing network to develop a baseline for measuring performance of a new network design Explore solutions for meeting QoS requirements, including ATM traffic management, IETF controlled-load and guaranteed services, IP multicast, and advanced switching, queuing, and routing algorithms Develop network designs that provide the high bandwidth and low delay required for real-time applications such as multimedia, distance learning, and videoconferencing Identify the advantages and disadvantages of various switching and routing protocols, including transparent bridging, Inter-Switch Link (ISL), IEEE 802.1Q, IGRP, EIGRP, OSPF, and BGP4 Effectively incorporate new technologies into enterprise network designs, including VPNs, wireless networking, and IP Telephony Top-Down Network Design, Second Edition, is a practical and comprehensive guide to designing enterprise networks that are reliable, secure, and manageable. Using illustrations and real-world examples, it teaches a systematic method for network design that can be applied to campus LANs, remote-access networks, WAN links, and large-scale internetworks. You will learn to analyze business and technical requirements, examine traffic flow and QoS requirements, and select protocols and technologies based on performance goals. You will also develop an understanding of network performance factors such as network utilization, throughput, accuracy, efficiency, delay, and jitter. Several charts and job aids will help you apply a top-down approach to network design. This Second Edition has been revised to include new and updated material on wireless networks, virtual private networks (VPNs), network security, network redundancy, modularity in network designs, dynamic addressing for IPv4 and IPv6, new network design and management tools, Ethernet scalability options (including 10-Gbps Ethernet, Metro Ethernet, and Long-Reach Ethernet), and networks that carry voice and data traffic. Top-Down Network Design, Second Edition, has a companion website at http://www.topdownbook.com, which includes updates to the book, links to white papers, and supplemental information about design resources. This book is part of the Networking Technology Series from Cisco Press¿ which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers.

Book The Art of Network Architecture

Download or read book The Art of Network Architecture written by Russ White and published by Cisco Press. This book was released on 2014-04-02 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Art of Network Architecture Business-Driven Design The business-centered, business-driven guide to architecting and evolving networks The Art of Network Architecture is the first book that places business needs and capabilities at the center of the process of architecting and evolving networks. Two leading enterprise network architects help you craft solutions that are fully aligned with business strategy, smoothly accommodate change, and maximize future flexibility. Russ White and Denise Donohue guide network designers in asking and answering the crucial questions that lead to elegant, high-value solutions. Carefully blending business and technical concerns, they show how to optimize all network interactions involving flow, time, and people. The authors review important links between business requirements and network design, helping you capture the information you need to design effectively. They introduce today’s most useful models and frameworks, fully addressing modularity, resilience, security, and management. Next, they drill down into network structure and topology, covering virtualization, overlays, modern routing choices, and highly complex network environments. In the final section, the authors integrate all these ideas to consider four realistic design challenges: user mobility, cloud services, Software Defined Networking (SDN), and today’s radically new data center environments. • Understand how your choices of technologies and design paradigms will impact your business • Customize designs to improve workflows, support BYOD, and ensure business continuity • Use modularity, simplicity, and network management to prepare for rapid change • Build resilience by addressing human factors and redundancy • Design for security, hardening networks without making them brittle • Minimize network management pain, and maximize gain • Compare topologies and their tradeoffs • Consider the implications of network virtualization, and walk through an MPLS-based L3VPN example • Choose routing protocols in the context of business and IT requirements • Maximize mobility via ILNP, LISP, Mobile IP, host routing, MANET, and/or DDNS • Learn about the challenges of removing and changing services hosted in cloud environments • Understand the opportunities and risks presented by SDNs • Effectively design data center control planes and topologies

Book Computer Networking

    Book Details:
  • Author : Benjamin Walker
  • Publisher : Science & Technology
  • Release : 2019-10-25
  • ISBN : 9781951652166
  • Pages : 226 pages

Download or read book Computer Networking written by Benjamin Walker and published by Science & Technology. This book was released on 2019-10-25 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping this high-demand information from yourself will be detrimental to your technologically-clueless future self... Do you feel insecure about the extent of your computer knowledge and find it difficult to contribute anything useful in a conversation about technology? Do computers and technology, in general, feel alien-like to you, as if it's something way past your time? The advancements made in technology have taken over how our society functions, and so there's no other way to deal with your shortcomings than to handle it head-on. According to TechCo, technology has influenced nearly every aspect of our daily lives, resulting in: Improved communication Improved forms of home entertainment Improved housing and lifestyle standards An altered healthy industry More convenient tools for education And last, but certainly not least: Easier travel, both short and long distances It's incredible to think there are people who have made all these things possible, yet, don't you want to know more about what's happening on the inside of it all? Start with computers. More specifically, computer networking. The next couple of questions swirling around in your head may now be, "Why computer networking? What even is computer networking exactly?" In a nutshell, it's a form of communication that allows for the sharing of resources from one device to another and without computer networking, none of the technology we have today could have been attained. Starting with the basics, you will be able to work your way up to become a computer whiz and be the one people turn to for computer advice. In Computer Networking, you will discover: The fundamental elements essential to creating your network, including why each of them is so important to your start-up A thorough explanation of the networking terms you need to know, written in plain English for easy comprehension How the Internet has had a revolutionary impact on our society, as well as what you can do to keep up with this undeniable part of our lives The best type of cable to use according to your networking needs The type of network you should not be using if you want to keep maintenance at its minimal level The 4 main types of wireless networks you should know, along with what factors can interfere with the consistency of these connections The #1 aspect of computer networking that can present a critical threat to your valuable data if not taken seriously And much more. Knowing your way around computers and how to utilize it for communication is a skill set required at almost every workplace you can find in the modern world, yet that fact is not something you should fear. Use it rather for motivation. The more skill sets you develop, the more opportunities you open for yourself. So with that being said, there's no better time than the present to begin your journey towards a well-informed, technologically-gifted you. Join the other side and finally be the one who's able to correct others about their computer knowledge... If you want to overcome your computer phobia and discover the endless opportunities computer networking has in store, then you need this book today!

Book Cisco Digital Network Architecture

Download or read book Cisco Digital Network Architecture written by Tim Szigeti and published by Networking Technology. This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The complete guide to transforming enterprise networks with Cisco DNA As networks become more complex and dynamic, organizations need better ways to manage and secure them. With the Cisco Digital Network Architecture, network operators can run entire network fabrics as a single, programmable system by defining rules that span their devices and move with their users. Using Cisco intent-based networking, you spend less time programming devices, managing configurations, and troubleshooting problems so you have more time for driving value from your network, your applications, and most of all, your users. This guide systematically introduces Cisco DNA, highlighting its business value propositions, design philosophy, tenets, blueprints, components, and solutions.Combining insider information with content previously scattered through multiple technical documents, it provides a single source for evaluation, planning, implementation, and operation. The authors bring together authoritative insights for multiple business and technical audiences. Senior executives will learn how DNA can help them drive digital transformation for competitive advantage. Technical decision-makers will discover powerful emerging solutions for their specific needs. Architects will find essential recommendations, interdependencies, and caveats for planning deployments. Finally, network operators will learn how to use DNA Center's modern interface to streamline, automate, and improve virtually any network management task. · Accelerate the digital transformation of your business by adopting an intent-based network architecture that is open, extensible, and programmable · Integrate virtualization, automation, analytics, and cloud services to streamline operations and create new business opportunities · Dive deep into hardware, software, and protocol innovations that lay the programmable infrastructure foundation for DNA · Virtualize advanced network functions for fast, easy, and flexible deployments · Translate business intent into device configurations and simplify, scale, and automate network operations using controllers · Use analytics to tune performance, plan capacity, prevent threats, and simplify troubleshooting · Learn how Software-Defined Access improves network flexibility, security, mobility, visibility, and performance · Use DNA Assurance to track the health of clients, network devices, and applications to reveal hundreds of actionable insights · See how DNA Applic...

Book Networks of New York

Download or read book Networks of New York written by Ingrid Burrington and published by Melville House. This book was released on 2016-08-30 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guided tour of the physical Internet, as seen on, above, and below the city’s streets What does the Internet look like? It’s the single most essentail aspect of modern life, and yet, for many of us, the Internet looks like an open browser, or the black mirrors of our phones and computers. But in Networks of New York, Ingrid Burrington lifts our eyes from our screens to the streets, showing us that the Internet is everywhere around us, all the time—we just have to know where to look. Using New York as her point of reference and more than fifty color illustrations as her map, Burrington takes us on a tour of the urban network: She decodes spray-painted sidewalk markings, reveals the history behind cryptic manhole covers, shuffles us past subway cameras and giant carrier hotels, and peppers our journey with background stories about the NYPD's surveillance apparatus, twentieth-century telecommunication monopolies, high frequency trading on Wall Street, and the downtown building that houses the offices of both Google and the FBI's Joint Terrorism Task Force. From a rising star in the field of tech jounalism, Networks of New York is a smart, funny, and beautifully designed guide to the endlessly fascinating networks of urban Internet infrastructure. The Internet, Burrington shows us, is hiding in plain sight.

Book Cloud Native Data Center Networking

Download or read book Cloud Native Data Center Networking written by Dinesh G. Dutt and published by "O'Reilly Media, Inc.". This book was released on 2019-11-22 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you want to study, build, or simply validate your thinking about modern cloud native data center networks, this is your book. Whether you’re pursuing a multitenant private cloud, a network for running machine learning, or an enterprise data center, author Dinesh Dutt takes you through the steps necessary to design a data center that’s affordable, high capacity, easy to manage, agile, and reliable. Ideal for network architects, data center operators, and network and containerized application developers, this book mixes theory with practice to guide you through the architecture and protocols you need to create and operate a robust, scalable network infrastructure. The book offers a vendor-neutral way to look at network design. For those interested in open networking, this book is chock-full of examples using open source software, from FRR to Ansible. In the context of a cloud native data center, you’ll examine: Clos topology Network disaggregation Network operating system choices Routing protocol choices Container networking Network virtualization and EVPN Network automation

Book Computer Networks

    Book Details:
  • Author : Larry L. Peterson
  • Publisher : Elsevier
  • Release : 2011-03-02
  • ISBN : 0123850606
  • Pages : 921 pages

Download or read book Computer Networks written by Larry L. Peterson and published by Elsevier. This book was released on 2011-03-02 with total page 921 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer Networks: A Systems Approach, Fifth Edition, explores the key principles of computer networking, with examples drawn from the real world of network and protocol design. Using the Internet as the primary example, this best-selling and classic textbook explains various protocols and networking technologies. The systems-oriented approach encourages students to think about how individual network components fit into a larger, complex system of interactions. This book has a completely updated content with expanded coverage of the topics of utmost importance to networking professionals and students, including P2P, wireless, network security, and network applications such as e-mail and the Web, IP telephony and video streaming, and peer-to-peer file sharing. There is now increased focus on application layer issues where innovative and exciting research and design is currently the center of attention. Other topics include network design and architecture; the ways users can connect to a network; the concepts of switching, routing, and internetworking; end-to-end protocols; congestion control and resource allocation; and end-to-end data. Each chapter includes a problem statement, which introduces issues to be examined; shaded sidebars that elaborate on a topic or introduce a related advanced topic; What's Next? discussions that deal with emerging issues in research, the commercial world, or society; and exercises. This book is written for graduate or upper-division undergraduate classes in computer networking. It will also be useful for industry professionals retraining for network-related assignments, as well as for network practitioners seeking to understand the workings of network protocols and the big picture of networking. - Completely updated content with expanded coverage of the topics of utmost importance to networking professionals and students, including P2P, wireless, security, and applications - Increased focus on application layer issues where innovative and exciting research and design is currently the center of attention - Free downloadable network simulation software and lab experiments manual available

Book Wireless Security Architecture

Download or read book Wireless Security Architecture written by Jennifer Minella and published by John Wiley & Sons. This book was released on 2022-03-07 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduce organizational cybersecurity risk and build comprehensive WiFi, private cellular, and IOT security solutions Wireless Security Architecture: Designing and Maintaining Secure Wireless for Enterprise offers readers an essential guide to planning, designing, and preserving secure wireless infrastructures. It is a blueprint to a resilient and compliant architecture that responds to regulatory requirements, reduces organizational risk, and conforms to industry best practices. This book emphasizes WiFi security, as well as guidance on private cellular and Internet of Things security. Readers will discover how to move beyond isolated technical certifications and vendor training and put together a coherent network that responds to contemporary security risks. It offers up-to-date coverage—including data published for the first time—of new WPA3 security, Wi-Fi 6E, zero-trust frameworks, and other emerging trends. It also includes: Concrete strategies suitable for organizations of all sizes, from large government agencies to small public and private companies Effective technical resources and real-world sample architectures Explorations of the relationships between security, wireless, and network elements Practical planning templates, guides, and real-world case studies demonstrating application of the included concepts Perfect for network, wireless, and enterprise security architects, Wireless Security Architecture belongs in the libraries of technical leaders in firms of all sizes and in any industry seeking to build a secure wireless network.

Book Cloud Computing

Download or read book Cloud Computing written by Thomas Erl and published by Pearson Education. This book was released on 2013 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes cloud computing as a service that is "highly scalable" and operates in "a resilient environment". The authors emphasize architectural layers and models - but also business and security factors.

Book Computer Networking

    Book Details:
  • Author : Michael White
  • Publisher :
  • Release : 2018-09-23
  • ISBN : 9781727672916
  • Pages : 326 pages

Download or read book Computer Networking written by Michael White and published by . This book was released on 2018-09-23 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology has gradually transitioned from wired to wireless over the years with tons of benefits. From the Internet of Things to wireless communication, we are all witnesses of the huge benefits of wireless technologies. This book covers various subjects and highlights both the benefits and challenges of wireless technologies. Topics: * Wireless Communication Technologies * Mobile Communication Systems * Wireless technology challenges * Network Protocols * Wireless Technology Security * Features of Secure Wireless Network Security * Security Issues in Wireless Networks * Wireless Network Computer Architecture * Cellular Wireless Networks * Communication Systems and Networks * Cisco Systems * Wireless Network Applications * Wired Network Components * Wireless Network Components * Network Security

Book Introduction to Computer Networks and Cybersecurity

Download or read book Introduction to Computer Networks and Cybersecurity written by Chwan-Hwa (John) Wu and published by CRC Press. This book was released on 2016-04-19 with total page 1960 pages. Available in PDF, EPUB and Kindle. Book excerpt: If a network is not secure, how valuable is it? Introduction to Computer Networks and Cybersecurity takes an integrated approach to networking and cybersecurity, highlighting the interconnections so that you quickly understand the complex design issues in modern networks. This full-color book uses a wealth of examples and illustrations to effective

Book AWS Certified Advanced Networking Official Study Guide

Download or read book AWS Certified Advanced Networking Official Study Guide written by Sidhartha Chauhan and published by John Wiley & Sons. This book was released on 2018-02-13 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: The official study guide for the AWS certification specialty exam The AWS Certified Advanced Networking Official Study Guide – Specialty Exam helps to ensure your preparation for the AWS Certified Advanced Networking – Specialty Exam. Expert review of AWS fundamentals align with the exam objectives, and detailed explanations of key exam topics merge with real-world scenarios to help you build the robust knowledge base you need to succeed on the exam—and in the field as an AWS Certified Networking specialist. Coverage includes the design, implementation, and deployment of cloud-based solutions; core AWS services implementation and knowledge of architectural best practices; AWS service architecture design and maintenance; networking automation; and more. You also get one year of free access to Sybex’s online interactive learning environment and study tools, which features flashcards, a glossary, chapter tests, practice exams, and a test bank to help you track your progress and gauge your readiness as exam day grows near. The AWS credential validates your skills surrounding AWS and hybrid IT network architectures at scale. The exam assumes existing competency with advanced networking tasks, and assesses your ability to apply deep technical knowledge to the design and implementation of AWS services. This book provides comprehensive review and extensive opportunities for practice, so you can polish your skills and approach exam day with confidence. Study key exam essentials with expert insight Understand how AWS skills translate to real-world solutions Test your knowledge with challenging review questions Access online study tools, chapter tests, practice exams, and more Technical expertise in cloud computing, using AWS, is in high demand, and the AWS certification shows employers that you have the knowledge and skills needed to deliver practical, forward-looking cloud-based solutions. The AWS Certified Advanced Networking Official Study Guide – Specialty Exam helps you learn what you need to take this next big step for your career.

Book Computer Networks

Download or read book Computer Networks written by Andrew S. Tanenbaum and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition reflects the latest networking technologies with a special emphasis on wireless networking, including 802.11, 802.16, Bluetooth, and 3G cellular, paired with fixed-network coverage of ADSL, Internet over cable, gigabit Ethernet, MPLS, and peer-to-peer networks. It incorporates new coverage on 3G mobile phone networks, Fiber to the Home, RFID, delay-tolerant networks, and 802.11 security, in addition to expanded material on Internet routing, multicasting, congestion control, quality of service, real-time transport, and content distribution.

Book LISP Network Deployment and Troubleshooting

Download or read book LISP Network Deployment and Troubleshooting written by Tarique Shakil and published by Cisco Press. This book was released on 2019-10-25 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Implement flexible, efficient LISP-based overlays for cloud, data center, and enterprise The LISP overlay network helps organizations provide seamless connectivity to devices and workloads wherever they move, enabling open and highly scalable networks with unprecedented flexibility and agility. LISP Network Deployment and Troubleshooting is the definitive resource for all network engineers who want to understand, configure, and troubleshoot LISP on Cisco IOS-XE, IOS-XR and NX-OS platforms. It brings together comprehensive coverage of how LISP works, how it integrates with leading Cisco platforms, how to configure it for maximum efficiency, and how to address key issues such as scalability and convergence. Focusing on design and deployment in real production environments, three leading Cisco LISP engineers present authoritative coverage of deploying LISP, verifying its operation, and optimizing its performance in widely diverse environments. Drawing on their unsurpassed experience supporting LISP deployments, they share detailed configuration examples, templates, and best practices designed to help you succeed with LISP no matter how you intend to use it. This book is the Cisco authoritative guide to LISP protocol and is intended for network architects, engineers, and consultants responsible for implementing and troubleshooting LISP network infrastructures. It includes extensive configuration examples with troubleshooting tips for network engineers who want to improve optimization, performance, reliability, and scalability. This book covers all applications of LISP across various environments including DC, Enterprise, and SP. Review the problems LISP solves, its current use cases, and powerful emerging applications Gain in-depth knowledge of LISP’s core architecture and components, including xTRs, PxTRs, MR/MS, ALT, and control plane message exchange Understand LISP software architecture on Cisco platforms Master LISP IPv4 unicast routing, LISP IPv6 routing, and the fundamentals of LISP multicast routing Implement LISP mobility in traditional data center fabrics, and LISP IP mobility in modern data center fabrics Plan for and deliver LISP network virtualization and support multitenancy Explore LISP in the Enterprise multihome Internet/WAN edge solutions Systematically secure LISP environments Troubleshoot LISP performance, reliability, and scalability

Book A Comprehensive Guide to 5G Security

Download or read book A Comprehensive Guide to 5G Security written by Madhusanka Liyanage and published by John Wiley & Sons. This book was released on 2018-03-19 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive guide to the design and implementation of security in 5G wireless networks and devices Security models for 3G and 4G networks based on Universal SIM cards worked very well. But they are not fully applicable to the unique security requirements of 5G networks. 5G will face additional challenges due to increased user privacy concerns, new trust and service models and requirements to support IoT and mission-critical applications. While multiple books already exist on 5G, this is the first to focus exclusively on security for the emerging 5G ecosystem. 5G networks are not only expected to be faster, but provide a backbone for many new services, such as IoT and the Industrial Internet. Those services will provide connectivity for everything from autonomous cars and UAVs to remote health monitoring through body-attached sensors, smart logistics through item tracking to remote diagnostics and preventive maintenance of equipment. Most services will be integrated with Cloud computing and novel concepts, such as mobile edge computing, which will require smooth and transparent communications between user devices, data centers and operator networks. Featuring contributions from an international team of experts at the forefront of 5G system design and security, this book: Provides priceless insights into the current and future threats to mobile networks and mechanisms to protect it Covers critical lifecycle functions and stages of 5G security and how to build an effective security architecture for 5G based mobile networks Addresses mobile network security based on network-centricity, device-centricity, information-centricity and people-centricity views Explores security considerations for all relative stakeholders of mobile networks, including mobile network operators, mobile network virtual operators, mobile users, wireless users, Internet-of things, and cybersecurity experts Providing a comprehensive guide to state-of-the-art in 5G security theory and practice, A Comprehensive Guide to 5G Security is an important working resource for researchers, engineers and business professionals working on 5G development and deployment.

Book Designing an Internet

    Book Details:
  • Author : David D. Clark
  • Publisher : MIT Press
  • Release : 2018-10-30
  • ISBN : 0262038609
  • Pages : 433 pages

Download or read book Designing an Internet written by David D. Clark and published by MIT Press. This book was released on 2018-10-30 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why the Internet was designed to be the way it is, and how it could be different, now and in the future. How do you design an internet? The architecture of the current Internet is the product of basic design decisions made early in its history. What would an internet look like if it were designed, today, from the ground up? In this book, MIT computer scientist David Clark explains how the Internet is actually put together, what requirements it was designed to meet, and why different design decisions would create different internets. He does not take today's Internet as a given but tries to learn from it, and from alternative proposals for what an internet might be, in order to draw some general conclusions about network architecture. Clark discusses the history of the Internet, and how a range of potentially conflicting requirements—including longevity, security, availability, economic viability, management, and meeting the needs of society—shaped its character. He addresses both the technical aspects of the Internet and its broader social and economic contexts. He describes basic design approaches and explains, in terms accessible to nonspecialists, how networks are designed to carry out their functions. (An appendix offers a more technical discussion of network functions for readers who want the details.) He considers a range of alternative proposals for how to design an internet, examines in detail the key requirements a successful design must meet, and then imagines how to design a future internet from scratch. It's not that we should expect anyone to do this; but, perhaps, by conceiving a better future, we can push toward it.