Segment Routing Introduction Before we proceed to understand the segment routing technology, we must understand that SR is a technology and every technology has made for a solution. So, first, we need to understand the solution and its need. All the Service providers are facing following issues with current infrastructure: 1. A lot of manual configuration for reserving the path in the SP Core network for a different type of traffics. 2. Lack of application-level visibility which leads to classifying network based on only IP, Port and QoS classification. 3. Lack of application integration with the network. 4. No centralized control over the path based on different type of services. 5. No end-to-end visibility from Data Center to an End user, which leads to sub-optimal paths for application in different domains. 6. The separate signaling protocol is required for MPLS control plane signaling 7. Separate protocol for labeling and sepa