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Reliable segment routing

Segment Routing (SR) is a novel traffic engineering technique compatible with traditional MPLS data plane. SR relies on label stacking to steer traffic flows throughout the network. Signaling protocol is not required, thus control plane operation is greatly simplified. SR can also be exploited upon network failures to promptly perform traffic recovery and, subsequently, to optimize the recovered traffic for avoiding network congestion. This study proposes a procedure to dynamically recover the traffic flows disrupted by a single failure in segment routing networks. The proposed procedure is evaluated in several network topologies to estimate the complexity of the required operations.