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Segment Routing for Service Provider and Enterprise Networks

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Segment Routing for Service Provider and Enterprise Networks

By Florian Deragisch, Leonir Hoxha, Rene Minder, Matthys Rabe, Kateel Vijayananda
Published Dec 12, 2024 by Cisco Press. Part of the Networking Technology series.

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Description

Sample Content

Updates

Copyright 2025
Edition: 1st

eBook
ISBN-10: 0-13-823101-X
ISBN-13: 978-0-13-823101-9

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, youll 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

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

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