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SDN-Ready WAN networks: Segment Routing in MPLS-Based Environments

Abstract:

This article analyzes the structure, main components and operation of Segment Routing (SR) as a new way of encapsulating WAN traffic in MPLS-Based and onlyBGP environments. SR is being considered the encapsulation protocol for modern Intelligent WANs. A proof-of-concept emulation in a virtualized scenario will demonstrate how SR works; and based on the results, this research could be used as a proposal for Service Providers to improve their network implementations, orienting them to topologies that will support new technological and business trends like Cloud/Fog Computing, IoT, BYOX, 5G, SDN, without changing their forwarding plane or using any signaling protocol, which leads to a better performance and effectiveness of the infrastructure, and obtaining a balance between orchestration and centralized intelligence through source-routing and underlay-overlay paradigms in an optimized IP network.