LEARNING MADE EASY VMware 3rd Special Edition Network Virtualization dummies See why you need to aliZe you Understand how it ks and getting started Brought to b vmWare Varun Santosh Stijn Vanveerdeghem
About VMware VMware software powers the worlds complex digital infrastructure The company' s compute, cloud, mobility, networking and security offerings provide a dynamic, consistent digital foundation to deliver the apps that power business innovation. VMware is streamlining the journey to digital business for more than 500,000 customers globally. aided by an ecosystem of 75,000 partners, by unlocking value from today's technologies while enabling the integration of tomorrows. With VMware, organizations are empowered to flex and harness new technology quickly, without disrupting operations or introducing risk This year, VMware celebrates 22 years of breakthrough innovation benefiting business and society Tolearnmorevisitwww.vmware.com s are @2021 John Wley Sons Inc. Any dissemination distribution,Or
These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited
Network Virtualization VMware 3rd Special Edition by varun Santosh and Stin Vanveerdeghem dummies A Wiley Brand C2021 John Wley Sons Inc Any di
These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Network Virtualization VMware 3rd Special Edition by Varun Santosh and Stijn Vanveerdeghem
Network Virtualization For dummies@ vmware 3rd Special Edition 111 River st Hoboken, NJ07030-5774 wiley.com Copyright 2021 by John wiley Sons, Inc, Hoboken, New Jersey No part of this publication may be reproduced, stored in a retrieval system or transmitted in any ions 107 or 108 of the 1976 United States Copyright Act, withou 07030,(201)748-6011,fax(201)748-6008,oronlineathttp://www.wiley.com/go/permissions. nd related trade dress are trad tered trademarks of john John Wiley Sons, Inc, is not associated with any product or vendor mentioned in this book LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE. NO WARRANTY MAY BE CREATED OR EXTENDED BY SALES OR PROMOTIO topy s sot n wrrt正正2 RENDERING LEGAL ACCOUNTING OR OTHER PROFESSIONAL SERVICES. IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF A COMPETENT PROFESSIONAL PERSON SHOULD BE SOUGHT NEITHER THE PUBLISHER NOR THE AUTHOR SHALL BE LIABLE FOR DAMAGES ARISIN THAT THE AUTHOR OR THE PUBLISHER ENDORSES THE INFORMATION THE ORGANIZATION OR WEBSITE MAY PROVIDE OR RECOMMENDATIONS IT MAY MAKE. FURTHER, READERS HOULD BE AWARE THAT INTERNET WEBSITES LISTED IN THIS WORK MAY HAVE CHANGED OR DISAPPEARED BETWEEN WHEN THIS WORK WAS WRITTEN AND WHEN IT IS READ ISBN978-1-119-73684-4(pbk);ISBN978-1-119-73682-0(ebk) Manufactured in the United states of america 10987654321 epartment in the U.S. at 877-409-417 contactBrandedrights&licensesewiley.com Publishers acknowledgments Some of the people who helped bring this book to market include the following: Project Editor: Elizabeth Kuball Business Development Acquisitions Editor: Ashley Coffey Representative: Karen Hattan Editorial Manager: Rev Mengle Production Editor: Siddique Shaik Special Help: Faithe Wempen C2021 John Wley Sons Inc Any di
These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Network Virtualization For Dummies®, VMware 3rd Special Edition Published by John Wiley & Sons, Inc. 111 River St. Hoboken, NJ 07030-5774 www.wiley.com Copyright © 2021 by John Wiley & Sons, Inc., Hoboken, New Jersey No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without the prior written permission of the Publisher. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://www.wiley.com/go/permissions. Trademarks: Wiley, For Dummies, the Dummies Man logo, The Dummies Way, Dummies.com, Making Everything Easier, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates in the United States and other countries, and may not be used without written permission. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc., is not associated with any product or vendor mentioned in this book. LIMIT OF LIABILITY/DISCLAIMER OF WARRANTY: THE PUBLISHER AND THE AUTHOR MAKE NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS WORK AND SPECIFICALLY DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE. NO WARRANTY MAY BE CREATED OR EXTENDED BY SALES OR PROMOTIONAL MATERIALS. THE ADVICE AND STRATEGIES CONTAINED HEREIN MAY NOT BE SUITABLE FOR EVERY SITUATION. THIS WORK IS SOLD WITH THE UNDERSTANDING THAT THE PUBLISHER IS NOT ENGAGED IN RENDERING LEGAL, ACCOUNTING, OR OTHER PROFESSIONAL SERVICES. IF PROFESSIONAL ASSISTANCE IS REQUIRED, THE SERVICES OF A COMPETENT PROFESSIONAL PERSON SHOULD BE SOUGHT. NEITHER THE PUBLISHER NOR THE AUTHOR SHALL BE LIABLE FOR DAMAGES ARISING HEREFROM. THE FACT THAT AN ORGANIZATION OR WEBSITE IS REFERRED TO IN THIS WORK AS A CITATION AND/OR A POTENTIAL SOURCE OF FURTHER INFORMATION DOES NOT MEAN THAT THE AUTHOR OR THE PUBLISHER ENDORSES THE INFORMATION THE ORGANIZATION OR WEBSITE MAY PROVIDE OR RECOMMENDATIONS IT MAY MAKE. FURTHER, READERS SHOULD BE AWARE THAT INTERNET WEBSITES LISTED IN THIS WORK MAY HAVE CHANGED OR DISAPPEARED BETWEEN WHEN THIS WORK WAS WRITTEN AND WHEN IT IS READ. ISBN 978-1-119-73684-4 (pbk); ISBN 978-1-119-73682-0 (ebk) Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 For general information on our other products and services, or how to create a custom For Dummies book for your business or organization, please contact our Business Development Department in the U.S. at 877-409-4177, contact info@dummies.biz, or visit www.wiley.com/go/ custompub. For information about licensing the For Dummies brand for products or services, contact BrandedRights&Licenses@Wiley.com. Publisher’s Acknowledgments Some of the people who helped bring this book to market include the following: Project Editor: Elizabeth Kuball Acquisitions Editor: Ashley Coffey Editorial Manager: Rev Mengle Business Development Representative: Karen Hattan Production Editor: Siddique Shaik Special Help: Faithe Wempen
Table of contents NTRODUCTION… About this book Foolish Assumptions Icons Used in this Book 2 Where to go from here CHAPTER 1: Evolving to a Modern Network How Network Virtualization Is Changing Everything Todays Networking and Security Challenges Businesses need speed Security requirements are rising 5 Apps and data are in multiple clouds Why Hardware-Based Networks Can't Keep Up Physical network provisioning is slow Workload placement and mobility are limited Hardware limitations and lock-ins breed complexity Configuration processes are manual, slow, and error-prone…… 9 Operational and capital expenditures are too high You can't leverage hybrid cloud resources 11 Traditional firewalls arent adequate CHAPTER2: Virtualizing the Network standing How Network Virtualization Works Differentiating Between Network Virtualization and Software-Defined Networking Comparing Virtual Appliances to Network Virtualization Understanding Why the Time Is Right for Network Virtualization Meeting the demands of a dynamic business. Increasing flexibility with hardware abstraction Redefining security with micro-segmentation Table of contents 1l1
Table of Contents iii These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Table of Contents INTRODUCTION............................................................................................... 1 About This Book ................................................................................... 1 Foolish Assumptions............................................................................ 2 Icons Used in This Book....................................................................... 2 Where to Go from Here....................................................................... 2 CHAPTER 1: Evolving to a Modern Network ........................................ 3 How Network Virtualization Is Changing Everything ....................... 4 Today’s Networking and Security Challenges ................................... 5 Businesses need speed.................................................................. 5 Security requirements are rising .................................................. 5 Apps and data are in multiple clouds........................................... 6 Why Hardware-Based Networks Can’t Keep Up............................... 7 Physical network provisioning is slow.......................................... 7 Workload placement and mobility are limited............................ 8 Hardware limitations and lock-ins breed complexity and rigidity....................................................................................... 8 Configuration processes are manual, slow, and error-prone...................................................................................... 9 Operational and capital expenditures are too high .................10 You can’t leverage hybrid cloud resources................................11 Traditional firewalls aren’t adequate..........................................11 CHAPTER 2: Virtualizing the Network.....................................................15 Understanding How Network Virtualization Works.......................15 Differentiating Between Network Virtualization and Software-Defined Networking ..........................................................19 Comparing Virtual Appliances to Network Virtualization..............20 Understanding Why the Time Is Right for Network Virtualization.......................................................................................20 Meeting the demands of a dynamic business...........................21 Increasing flexibility with hardware abstraction.......................21 Redefining security with micro-segmentation ..........................21 Rethinking the Network.....................................................................24
CHAPTER3: Transforming the Network Understanding the Key Functionalities of a virtualized Network Overlay networks E and VXLAN Understanding virtual Network Functions The big p 0 the vmware nsX data Cente NSX Data Center architecture Integration with existing network infrastructure Simplified networking Broader networking and security capabilities 2 xploring Key NSX Capabilities…… Everything in software. Essential isolation, segmentation, and advanced security services Performance and scale Unparalleled network visibility Identifying the Key Benefits of VMware NSX Data Center...36 Functional benefits Economic benefits CHAPTER 4: Exploring Network virtualization Use Cases..39 Securing the Data Center.... Security at the granularity of a workload and the scale of the enterprise VMware Service-defined firewall 42 Taking a phased approach to securing a data center Securing user environments: Micro-segmentation for VDl.....50 Multi-Cloud Networking Managing hybrid cloud environments Disaster recovery and metro pooling... Consistent security policy and visibility. Workload mobility between clouds Automating the Network. Network automation Developer cloud Network Virtualization For Dummies, VMware 3rd Special Edition C2021 John Wley Sons Inc Any di
iv Network Virtualization For Dummies, VMware 3rd Special Edition These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. CHAPTER 3: Transforming the Network...............................................25 Understanding the Key Functionalities of a Virtualized Network ...............................................................................................25 Overlay networks..........................................................................25 Comparing GENEVE and VXLAN..................................................27 Understanding Virtual Network Functions......................................29 The Big Payoff.....................................................................................30 Meeting the VMware NSX Data Center............................................30 NSX Data Center architecture .....................................................31 Integration with existing network infrastructure......................31 Simplified networking ..................................................................31 Broader networking and security capabilities...........................32 Exploring Key NSX Capabilities .........................................................32 Everything in software..................................................................33 Essential isolation, segmentation, and advanced security services............................................................................34 Performance and scale ................................................................34 Unparalleled network visibility....................................................35 Identifying the Key Benefits of VMware NSX Data Center ............36 Functional benefits .......................................................................36 Economic benefits ........................................................................37 CHAPTER 4: Exploring Network Virtualization Use Cases......39 Securing the Data Center ..................................................................40 Security at the granularity of a workload and the scale of the enterprise..................................................................41 VMware Service-defined Firewall................................................42 Taking a phased approach to securing a data center ..............49 Securing user environments: Micro-segmentation for VDI.....50 Multi-Cloud Networking ....................................................................53 Managing hybrid cloud environments .......................................54 Disaster recovery and metro pooling.........................................54 Consistent security policy and visibility......................................55 Workload mobility between clouds ............................................55 Networking Modern Applications ....................................................56 Automating the Network...................................................................57 Network automation ....................................................................57 Developer cloud............................................................................57
CHAPTERS: Operationalizing Network Virtualization Investigating Operations Investment Areas. People and processes…… 9606 Processes and tooling ooking at Some Examples Provisioning and configuration management. 63 Incident and capacity management Micro-segmentation Developing the Right Mindset.…… Focusing on the Big Picture CHAPTER 6: Ten(Or So) Ways to Get Started with Network virtualization Taking a Deeper Dive Taking an NSX Data Center Test Drive with Hands-On Labs..69 Gaining Visibility…… ploying NSX in Your Environment 70 Deploying NSX Data Center on Your Existing Network Integrating with Your Networking Services Ecosystem Partners Table of Contents v C2021 John Wley Sons Inc Any di
Table of Contents v These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. CHAPTER 5: Operationalizing Network Virtualization..............59 Investigating Operations Investment Areas....................................60 People and processes ..................................................................60 Processes and tooling ..................................................................61 Looking at Some Examples ...............................................................63 Provisioning and configuration management...........................63 Incident and capacity management...........................................64 Micro-segmentation .....................................................................64 Developing the Right Mindset...........................................................65 Focusing on the Big Picture...............................................................66 CHAPTER 6: Ten (Or So) Ways to Get Started with Network Virtualization.........................................................67 Boning Up on the Basics....................................................................67 Taking a Deeper Dive.........................................................................68 Taking an NSX Data Center Test Drive with Hands-On Labs ........69 Gaining Visibility .................................................................................70 Deploying NSX in Your Environment ...............................................70 Deploying NSX Data Center on Your Existing Network Infrastructure......................................................................................72 Integrating with Your Networking Services Ecosystem Partners ...............................................................................................72
Introduction erhaps you've heard some talk about network virtualization, and wondered what it was all about How can something else physical, like network hardware, become something entirely software? And how does it change the way networks Welcome to Network Virtualization For Dummies, your guide to a new and greatly improved approach to networking and security This book teaches you the basics of virtualization and explains how it can help a business save money, run faster, and be more Keeping up with modern businesss expectations is a tall order for any network. a network needs to be ) Agile and configurable enough to move as fast as the Smarter and faster than the cybercriminals who are always >> Flexible enough to enable users to run applications and access data from anywhere in the world Network virtualization can help your company realize all those goals and more About This Book Don't let the small footprint fool you. This book is loaded with information that can help you unde and capitalize on net work virtualization. In plain and language, we explain what network virtualization is, why it's such a hot topic, how you can get started, and steps you can take to get the best bang for ur it buck Introduction C2021 John Wley Sons Inc Any di
Introduction 1 These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Introduction Perhaps you’ve heard some talk about network virtualization, and wondered what it was all about. How can something physical, like network hardware, become something entirely existing in software? And how does it change the way networks operate and IT professionals do their jobs? Welcome to Network Virtualization For Dummies, your guide to a new and greatly improved approach to networking and security. This book teaches you the basics of virtualization and explains how it can help a business save money, run faster, and be more secure. Keeping up with modern business’s expectations is a tall order for any network. A network needs to be » Agile and configurable enough to move as fast as the business itself » Smarter and faster than the cybercriminals who are always looking for a way in » Flexible enough to enable users to run applications and access data from anywhere in the world Network virtualization can help your company realize all those goals and more. About This Book Don’t let the small footprint fool you. This book is loaded with information that can help you understand and capitalize on network virtualization. In plain and simple language, we explain what network virtualization is, why it’s such a hot topic, how you can get started, and steps you can take to get the best bang for your IT buck
Foolish Assumptions In writing this book, we've made some assumptions about you We assume that ))You work in IT, cloud, application pipelines, or a related rol that involves some level of networking. >> You're familiar with network terminology >>You understand the concept of virtualization Icons used in this book To make it even easier to navigate to the most useful information, these icons highlight key text Take careful note of these key"takeaway"points REMEMBER Read these optional passages if you crave a more technical Follow the target for tips that can save you time and effort. Anything marked with this icon will save you a load of trouble(or worse WARNING Where to go from here The book is written as a reference guide, so you can read it from cover to cover or jump straight to the topics you're most inter- ested in Whichever way you choose, you can't go wrong. Both paths lead to the same outcome: a better understanding of net ork virtualization and how it can help you increase security, agility, and multi-cloud flexibility 2 Network Virtualization For Dummies, vMware 3rd special Edition C2021 John Wley Sons Inc Any di
2 Network Virtualization For Dummies, VMware 3rd Special Edition These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Foolish Assumptions In writing this book, we’ve made some assumptions about you. We assume that » You work in IT, cloud, application pipelines, or a related role that involves some level of networking. » You’re familiar with network terminology. » You understand the concept of virtualization. Icons Used in This Book To make it even easier to navigate to the most useful information, these icons highlight key text: Take careful note of these key “takeaway” points. Read these optional passages if you crave a more technical explanation. Follow the target for tips that can save you time and effort. Anything marked with this icon will save you a load of trouble (or worse). Where to Go from Here The book is written as a reference guide, so you can read it from cover to cover or jump straight to the topics you’re most interested in. Whichever way you choose, you can’t go wrong. Both paths lead to the same outcome: a better understanding of network virtualization and how it can help you increase security, agility, and multi-cloud flexibility
IN THIS CHAPTER p Exploring today s networking ecurity challenge o Building the case for network p Introducing the virtual cloud network Chapter Evolving to a modern Network hy should you care about network virtualization? Why are organizations increasingly adopting virtualization technologies? This chapter explores several challenges that point to a single overarching need: organizations want to deliver public cloud-like agility, flexibility, efficiency, and reli ability with their private-cloud infrastructure Here's why >>To stay competitive businesses need agility to speed up time to market. >)Companies face increasingly heterogenous infrastructures from the edge to branch offices to core data centers and the >>Legacy network architectures limit business agility, leave urity threats unchecked, and drive up costs prohibits an agile, scalable approach twork function 》》 Using dedicated hardware for each n CHAPTER 1 Evolving to a Modern Network 3 C2021 John Wley Sons Inc Any di
CHAPTER 1 Evolving to a Modern Network 3 These materials are © 2021 John Wiley & Sons, Inc. Any dissemination, distribution, or unauthorized use is strictly prohibited. Chapter 1 IN THIS CHAPTER » Exploring today’s networking and security challenges » Building the case for network virtualization » Introducing the virtual cloud network Evolving to a Modern Network Why should you care about network virtualization? Why are organizations increasingly adopting virtualization technologies? This chapter explores several challenges that point to a single overarching need: Organizations want to deliver public cloud-like agility, flexibility, efficiency, and reliability with their private-cloud infrastructure. Here’s why: » To stay competitive, businesses need agility to speed up time to market. » Companies face increasingly heterogenous infrastructures, from the edge to branch offices to core data centers and the cloud. » Legacy network architectures limit business agility, leave security threats unchecked, and drive up costs. » Using dedicated hardware for each network function prohibits an agile, scalable approach
