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
  

Pieter-Jan Nefkens is a long-term Dutch based IT and network professional. From early on in his career he has been connecting devices and people, even before the Internet era. He holds a BsC in Computer Science with telematics and real time systems. Since obtaining his BsC he has been an entrepreneur in ICT with specialties in networking, security, virtualization, and active software development.

    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