Segment Routing Traffic Engineering: SR-MPLS Policies and TI-LFA

This book explores the foundations, mechanisms, and advanced applications of Segment Routing with MPLS traffic engineering and topology independent loop-free alternates, providing a comprehensive view of how SR policies and TI-LFA shape modern transport networks. It examines the architectural principles, control and data plane interactions, path computation strategies, resiliency techniques, and operational considerations that enable scalable, flexible, and highly resilient infrastructures. Through detailed analysis of policy design, integration with legacy protocols, multi-domain deployments, network slicing, cloud connectivity, 5G transport, and emerging trends, the book serves as a complete reference for understanding how SR-MPLS and TI-LFA deliver deterministic traffic engineering, sub-50 millisecond protection, and the agility required for next-generation carrier and enterprise networks.