This article introduces Segment Routing (SR), a network technology facilitating flexible and scalable traffic routing by allowing source nodes to specify packet routes through segmented paths. The architecture's principles include source routing, flow restriction for efficient state management, MPLS and IPv6 compatibility, and simplified network operations. SR's advantages in data centers encompass flexibility, scalability, programability, reduced complexity, and improved security. The article explores SR-MPLS, a strategy combining SR with MPLS for dynamic route steering, scalability, workload distribution, and optimization of broadcast, multicast, and unknown unicast traffic. Key considerations for successful SR deployment include traffic engineering, security, scalability, IPv6 integration, redundancy, high availability, and compliance with regulatory standards. In summary, SR and SR-MPLS emerge as powerful tools for simplifying network operations, improving scalability, and optimizing resource utilization in evolving network architectures.

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