This easy-to-read book gives you jargon-free best practices for Software-Defined Wide Area Networking. Includes a special foreword by Lee Doyle, Doyle Research. Co-authored by Dan Pitt, Open Networking Foundation.
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Any dissemination, distribution, or unauthorized use is strictly prohibited Table of contents FOREWORD 着音音看垂 Defining SD-WAN and Understanding its Importance Changing traffic patterns: SaaS, cloud, mobile, video SD-WAN Benefits Highlighting SD-WAN Buying Considerations…… Reaching Conclusions and Making Recommendations... INTRODUCTION About this book Foolish Assumptions How This Book Is organized cons used in this book 22233 Where to go from here CHAPTER1: Taking an Overview of Software-Defined wan Defining software-Defined WaN Meeting the SDN principle of network abstraction………6 Separating functionality into control and data planes Understanding the Need for SD-WAN Dealing with applications hindered by expensive bandwidth… Tackling branch deployments delayed by lt complexity...8 Considering cloud migration not supported by static architectures Figuring out What SD-WAN Is Not Discovering the features of sd-WAN Virtualizing the network………………………10 Enabling a secure overlay…………………… Simplifying services delivery Providing interoperability Leveraging cost-effective hardware Supporting automation with business policy framework..12 Monitoring usage and performance Supporting interoperable and open networking ............1 Enabling managed services………… Table of contents v These materials are@ 2018 John Wiley Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited CHAPTER 2: Surveying SD-WAN Architecture 15 Identifying the Challenges that Face a Traditional WAN Need to simplify Wan for enterprise branch offices....16 Inefficient wan utilization Secure communications..…… Rigid WAN circuit requirements…… Complex service delivery…… 17 Cloud migration… Managed Service provider ready 18 Analyzing SD-WAN Architecture Secure cloud network… Virtual service delivery……… 20 Orchestration and analytics 22 Appreciating the Advantages of SD-WAN over Traditional wan 23 CHAPTER 3: Deploying sD-WAN 25 Connecting Enterprise to Cloud Services with SD-WAN.……….25 Looking at Deployment Options........27 Internet WAN branch using SD-WAN 29 Hybrid Wan branch using SD-WAN..............29 Maximizing the performance Benefits of Using Heterogeneous Networks ..................30 Migrating to SD-WAN…. 31 CHAPTER 4: Counting the Benefits of SD-WAN for Enterprises Improving Business Agility with a Software-Defined Solution..33 Driving IT Efficiency with Automation and Cloud management Enabling the Migration to Cloud Services and Applications...36 Reducing Overall Costs and Helping IT Budget Management..36 CHAPTER S: Looking to the SD-WAN Future...39 Surveying the Current Scope of SD-W/AN…… ∴39 Extending SD-WAN for Mobility……… Pairing SD-WAN and the Internet of Things 41 Comparing SD∽ WAN and ne………….………… 42 VI Software-Defined WAN For Dummies, 2nd VMware Special Edition These materials are C 2018 John Wiley& Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited CHAPTER 6: Top Ten Considerations for Enterprise Adoption of SD-WAN SD-WAN Consideratⅰons 44 Flexible Deployment Options………………44 Transport-Independent design...................44 Network service insertion Incremental Migration and Interoperability……………45 Optimized and secure access to saas and enterprise Applications…… ,45 Scalable redundant and resilient control and data plane 45 Ease of ICOM(Installation, Configuration, Operations and Management)......... Programmability. ,46 A Secure and Encrypted Overlay.…… 46 Consider a purpose-Built sD-WAN Solution Table of contentsⅥl These materials are@ 2018 John Wiley Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited Foreword oftware-Defined WAN, or SD-WAN for short, is at the leading edge of software-based networking deployments. SD-WAN offers significant business value for organizations with dis tributed branches in terms of business agility and the ability to leverage Internet bandwidth economics -put simply, cost savings This Software-Defined WAN For Dummies book explains the way for IT and business managers to migrate to a distributed network which is less complex, more flexible and easier to manage. with this book, vMware and dan Pitt make an important contribution to better understanding the future of WAN implementations Defining SD-WAN and Understanding its Importance SD-WAN uses software and cloud-based technologies to simplify delivery of WAn services to branch offices. Software-based vir tualization enables network abstraction that results in simplifi cation of network operations. SD-WAN enables IT and business managers to deploy Internet-based connectivity(with its benefits of ubiquity, high bandwidth and low cost)easily, quickly and with quality, reliability and security Changing traffic patterns: SaaS, cloud. mobile, video The evolution of it technologies has altered traffic flows within distributed organizations. not only do remote users require sig- nificantly more bandwidth(for example, when using video), but they also need to directly access SaaS/cloud-based applications such as Saleforce, Office 365, Lync and off-premise storage(such as Dropbox, evernote, and so on). Traditional mPls networks which transmit all traffic from the branch to a centralized data center cant offer low latency/high performance access to cloud applications. In addition, the security and management require ments associated with disparate traffic flows have added to the complexity of managing branch operations thus increasing perational(staffing) costs for many IT organizations Foreword IX These materials are@ 2018 John Wiley Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited SD-WAN Benefits In contrast, SD-WAN provides a wide range of benefits for dis tributed organizations, including 2 Business agility. Rapid deployment of WAN services(such as bandwidth and firewall) to distributed branch operations without the need to send IT personnel on-site Bandwidth can be easily added (with additional circuits)or reduced as business requirements evolve >>Internet economics. Internet connectivity(including cable DSL and ethernet)is widely available, quick to deploy and fraction of the cost of equivalent mPls circuits. SD-WAN provides the benefits of reliable secure Wan service at Internet price points ) Optimized cloud architecture Sd-WaN eliminates the backhaul penalties of traditional mpls networks and leverages the Internet to provide secure, high-performance connections from the branch to cloud with sd-wan, remote users will see ignificant improvements in their experience when using the cloud/SaaS-based applications Highlighting SD-WAN Buying Considerations If you're an IT or business manager, consider the following crite ria when evaluating SD-Wan deployments: Ease of adoption and management a key benefit of SD-WAN is that it makes deploying WAN services at the branch fast and simple. SD-WAN solutions must be straight- forward to deploy, and they leverage centralized provision- ing to eliminate the need for trained personnel to visit remote sites >>Ability to migrate to hybrid WAN. The majority of distrib uted organizations already have mpls deployed to the branch offices. Organizations should be able to seamlessly deploy SD-WAN solutions(Internet circuits)without changing the existing MPLS network. Those organizations can, over X Software-Defined WAN For Dummies, 2nd VMware Special Edition These materials are C 2018 John Wiley& Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited2018-11-14 上传 大小：3.06MB