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