About the Book
Unlock the Future of Networking with Segment Routing: Your Comprehensive Guide to SR-MPLS and SRv6 for Service Provider and Enterprise Networks
In the ever-evolving landscape of networking, this book is your essential resource for mastering the cutting-edge technology of Segment Routing (SR). Authored by industry experts, this book offers a deep dive into the world of SR, from foundational principles to advanced implementations.
This guide begins with a brief recap of MPLS, setting the stage for an in-depth exploration of SR-MPLS and SRv6. Each chapter is meticulously crafted to provide a holistic understanding of SR, featuring practical examples and detailed configurations for both IOS-XR and IOS-XE platforms. Network engineers, architects, and operators will find invaluable insights and step-by-step instructions to effectively implement and manage SR technologies and overlay services.
Beyond the technical details, the book delves into the business and organizationalimplications of adopting SR. Learn how SR can drive growth, improve customer experience, and streamline operations. With sections on SRv6 deployments in data centers and cloud environments, including lab support materials, you’ll be ready for the next wave of networking innovations.
Book features include:
Practical insights drawn from real-world deployments, including diagrams, design guidelines, configuration examples, packet captures, and troubleshooting tips
Logical progression from basic concepts to advanced implementations, suitable for both beginners and seasoned professionals
Extensive configuration and verification examples for overlay services like L2VPN (EVPN) and L3VPN
SRv6 open-source implementations for data centers and cloud environments
Business-oriented chapters outlining the benefits of SR
Table of Contents:
Introduction xx
Part I Introduction
Chapter 1 MPLS in a Nutshell 1
How MPLS Operates 4
Challenges and Shortcomings of MPLS 19
Beyond MPLS 28
Summary 30
References and Additional Reading 32
Chapter 2 What Is Segment Routing over MPLS (SR-MPLS)? 33
Problem Description and Requirements 40
Segment Routing over MPLS (SR-MPLS) 41
Summary 99
References and Additional Reading 100
Chapter 3 What Is Segment Routing over IPv6 (SRv6)? 103
Introduction 103
Segment Routing over IPv6 (SRv6) 103
SR-Powered Network Evolution 205
SR-MPLS or SRv6 212
Summary 215
References and Additional Reading 217
Part II Segment Routing
Chapter 4 Segment Routing in Detail 219
Link-State IGPs 221
Segment Routing Baseline 225
Segment Routing Control Plane (IGP) 243
Segment Routing Control Plane (BGP) 324
Summary 350
References and Additional Reading 352
Chapter 5 Migrating to Segment Routing 353
Deployment Models 354
Migration Strategies 355
SR-MPLS Migration 358
SRv6 Migration 387
Migration Paths from MPLS to SRv6 427
Summary 435
References and Additional Reading 437
Part III Service Design
Chapter 6 L2VPN Service Deployment: Configuration and Verification Techniques 439
L2VPN (EVPN) 440
Summary 602
References and Additional Reading 602
Chapter 7 L3VPN Service Deployment: Configuration and Verification Techniques 605
L3VPN 606
Route Target Constraint 767
Summary 780
References and Additional Reading 781
Chapter 8 Service Assurance 783
Transport 784
Services 806
Summary 855
References and Additional Reading 855
Chapter 9 High Availability and Fast Convergence 857
BFD Failure Detection Mechanism 858
Topology-Independent Loop-Free Alternate (TI-LFA) 878
Microloop Avoidance 935
BGP PIC Edge 943
Summary 995
References and Additional Reading 995
Part IV Business and Operational Considerations
Chapter 10 Business Opportunities 997
Technological Opportunities and Benefits 999
CapEx Savings 1026
OpEx Savings 1030
Business Case Guidance 1032
Summary 1039
References and Additional Reading 1040
Chapter 11 Organizational Considerations 1043
Scenario 1: Replacing or Enhancing a Legacy Network with SR 1046
Scenario 2: Consolidating Networks and Services 1056
Summary 1106
References and Additional Reading 1107
Appendix A Reference Diagrams and Information 1109
Online Element:
Chapter 12 SRv6 Ecosystem Deployment Use Cases 1
SRv6 Open-Source Implementations 2
SRv6 Open-Source Lab Deployment Examples 17
Summary 82
References and Additional Reading 83
TOC, 11/19/2024, 9780138230937
About the Author :
Florian Deragisch, CCIE #47970, is a Technical Leader, working with large service provider and carrier-grade enterprise customers. He joined Cisco in 2012 as part of a graduate program, where he discovered his passion for service provider designs and technologies. After gaining extensive exposure to MPLS-based networks and services, he embraced the evolution toward segment routing with his first SR-MPLS deployment in 2018. More recently, he has focused on the migration and deployment of L2VPN/L3VPN SRv6 services to build simple and highly scalable network architectures. He holds a master’s degree in electrical engineering and information technology from the Swiss Federal Institute of Technology in Zurich and a Cisco Internetwork Expert certification (CCIE #47970). When not busy with work, he enjoys traveling to explore new places, cultures, and food.
Leonir Hoxha, CCIE #49534, has been with Cisco Systems since 2013, taking on various roles on the Professional Services team and later on the Pre-sales team--from troubleshooting to designing and implementing large-scale networks with a focus on service provider technologies, specifically MPLS services. In his current role as a Solutions Architect, he supports service providers and enterprise customers by understanding their requirements and providing cutting-edge solutions. An active speaker at Cisco Live conferences, he has delivered numerous sessions on segment routing across Europe, the United States, and Australia. He holds a bachelor’s degree in computer science and a Cisco Internetwork Expert certification (CCIE #49534). In his free time, he enjoys electronic music, a nod to his first job as a DJ during his teenage years.
Rene Minder, CCIE #8003, is a Senior Program Advisor and Solution Architect with over 25 years of experience in the IT industry. He has been responsible for architecture and delivery in more than 70 customer engagements, evolving their networks and management infrastructures as well as the processes for developing, testing, and deploying them. He has led end-to-end IT architecture projects encompassing everything from portals offering service self-administration capabilities, to IT applications that automatically configure and test changes, to invoicing. His efforts have led to significant improvements in customer satisfaction, operational efficiency, and overall agility. He holds Lifetime Emeritus status for his Cisco Internetwork Expert certification (CCIE #8003).
Matthys “Thys” Rabe, CCIE #4237, a Lifetime Emeritus Cisco Certified Internetwork Expert (CCIE #4237), is a Technical Leader at Cisco Systems and holds a diploma in electrical engineering (telecommunications). With more than 25 years of experience in IP and MPLS operations with various service providers in South Africa and Switzerland, he has spent the past 10 years as a Technical Support Engineer focused on Swisscom. Prior to working at Cisco Systems, he was part of the Core IP Engineering team with a Swissbased mobile provider. When he’s not working, he enjoys fishing with his brothers in various southern African countries.
Kateel Vijayananda, is a solutions architect at Cisco Systems and has more than 30 years of experience in the networking industry. His expertise includes IPv6, IP services, design of large-scale networks for enterprise and service provider customers, and QoS assurance in IP networks. He has been with Cisco Systems since 2001, involved in several projects for service providers to deploy IP-based services using MPLS and segment routing. Before joining Cisco, he worked at Swisscom, a service provider in Switzerland, where he was responsible for developing MPLS VPN services. He is the co-author of the book Developing IP-Based Services: Solutions for Service Providers and Vendors. He holds a master’s degree in computer science from the University of Maryland at College Park and a PhD in computer science from the Swiss Federal Institute of Technology at Lausanne (EPFL). In his spare time, he enjoys traveling and cooking.
