TEL: Low-Latency Failover Traffic Engineering in Data Plane

Modern network applications demand low-latency traffic engineering in the presence of failure, while preserving quality service constraints like delay and capacity. Fast Re-Route (FRR) mechanisms are widely used for re-routing purposes failure scenarios. Control plane FRR typically computes backup forwarding rules to detour data when occurs. This mechanism could be computed with emergence programmable planes. In this paper, we propose a system (called TEL ) that contains two mechanisms, namely, TEL-C TEL-D. The first one control plane, satisfying max-min fair allocation. second provides plane. Both algorithms require minimal memory on planes well-suited modern line rate match-action architectures (e.g., PISA). We implement both P4 software switches BMv2 Tofino) measure their performance various topologies. obtained results from datacenter topology show our can improve flow completion time up 4.6 $\times$ –7.3 (i.e., small flows) 3.1 –12 large compared recirculation-based such as F10, respectively.