Transforming Campus Networks to Intent-Based Networking

Migrate to Intent-Based Networking–and improve network manageability, cost, agility, security, and simplicity With Intent-Based Networking (IBN), you can create networks that capture and automatically activate business intent, assure that your network responds properly, proactively detect and contain security threats, and remedy network issues before users even notice. Intent-Based Networking makes networks far more valuable, but few organizations have the luxury of building them from the ground up. In this book, leading expert Pieter-Jans Nefkens presents a unique four-phase approach to preparing and transforming campus network infrastructures, architectures, and organization–helping you gain maximum value from IBN with minimum disruption and cost. The author reviews the problems IBN is intended to solve, and illuminates its technical, business, and cultural implications. Drawing on his pioneering experience, he makes specific recommendations, identifies pitfalls, and shows how to overcome them. You’ll learn how to implement IBN with the Cisco Digital Network Architecture and DNA Center and walk through real-world use cases. In a practical appendix, Nefkens even offers detailed technical configurations to jumpstart your own transformation. Review classic campus network deployments and understand why they need to change Learn how Cisco Digital Network Architecture (DNA) provides a solid foundation for state-of-the-art next generation network infrastructures Understand “intent” and how it can be applied to network infrastructure Explore tools for enabling, automating, and assuring Intent-Based Networking within campus networks Transform to Intent-Based Networking using a four-phased approach: Identify challenges; Prepare for Intent; Design and Deploy; and Enable Intent Anticipate how Intent-Based Networking will change your enterprise architecture, IT operations, and business

Table of Contents:
Introduction xx Part I Overview of Intent-Based Networking 1 Chapter 1 Classic Campus Network Deployments 3 Campus Design Fundamentals 4 Wireless Networks 10 Design Choices 15 Summary 20 Chapter 2 Why Change Current Networks? A Need for Change 23 Wireless/Mobility Trends 23 Connected Devices (IoT/Non-User Operated Devices) 26 Complexity 28 Manageability 29 Cloud (Edge) 30 (Net)DevOps 32 Digitalization 35 Summary 36 Chapter 3 Enterprise Architecture 37 What Is an Architecture Framework? 37 The TOGAF® Standard 39 Enterprise Architectures 48 Summary 49 Chapter 4 Cisco Digital Network Architecture 51 Requirements 51 Cisco DNA Design Concept 56 Design Principles 60 Common Design Principles 68 Overview of Cisco Solutions 73 Summary 74 Chapter 5 Intent-Based Networking 77 What Is Intent? 78 Intent-Based Networking Perspective 80 Intent-Based Networking Designs 83 Summary 91 Two Designs 93 Chapter 6 Tools for Intent 95 What Is Network Automation? 95 Network Automation Tools 97 Network Analytics 111 Application Behavior Analytics 112 Network Analytics Tools 113 Summary 119 Network Automation 119 Network Analytics 120 Part II Transforming to an Intent-Based Network 123 Chapter 7 Phase One: Identifying Challenges 129 Challenges in Day-to-Day Operations 129 Inventory 132 Level of Standardization 134 Maturity Level of an Organization 138 Stakeholders 141 Prioritize 142 Action Plan 143 Summary 145 Chapter 8 Phase Two: Prepare for Intent 147 Matching Requirements 148 Standardization of Campus Configuration 155 Introducing Assurance/Visibility 162 Introducing Automation 166 Risks of This Phase 174 Summary 176 Chapter 9 Phase Three: Design, Deploy, and Extend 179 Lab Environment 179 Which Technology? 181 Deploy a Baseline 187 Convert to Intents 200 Extend Intent Based 202 Increase Security 204 Risks 209 Summary 211 Chapter 10 Phase Four: Enable Intent 213 Why Enable Intent Further? 213 APIs for Intent 215 Bringing IBN to the Enterprise 220 Intent-Based Examples 223 Summary 226 Part III Organizational Aspects 227 Chapter 11 Architecture Frameworks 229 Enterprise Architecture 229 Impact of IBN 232 Summary 235 Chapter 12 Enabling the Digital Business 237 What Is Digitalization? 237 Stages in Digitalization 239 Design Thinking 242 Intent-Based Networking 245 Organizational Impact 246 Summary 249 Chapter 13 IT Operations 251 Common Frameworks Within IT Operations 252 Potential Conflicts and Recommendations 264 Summary 267 Chapter 14 Tips to Make Your IBN Journey a Success 271 Human Change 271 Fear 274 Quid Pro Quo and Incentives 274 Challenge 276 Failure 277 Forward Thinking 277 Ownership 278 Training and Demonstration 279 Stakeholders and Governance 279 Lifecycle Management 280 Summary 280 Appendix A Campus Network Technologies 283 Appendix B (online only) Sample Configurations 1 9780135466339, TOC, 11/4/2019