RARP: An Integrated Routing, Resource Allocation, and Protection Algorithm with Service Differentiation in SDM-EONs

• Rafael Lopes UFPA https://orcid.org/0000-0003-2967-2225
• Denis Rosário UFPA https://orcid.org/0000-0003-1119-2450
• Eduardo Cerqueira UFPA https://orcid.org/0000-0003-2162-6523
• Helder M. N. da S. Oliveira USP https://orcid.org/0000-0003-3143-6280

DOI: https://doi.org/10.5753/sbrc.2026.19215

Abstract

The rapid growth of optical traffic has increased the need for SDM-EON architectures that jointly optimize routing and resource allocation while providing differentiated protection. This paper proposes RARP (Routing, Allocation of Resources, and Protection), a unified algorithm that combines distance-adaptive modulation, shared protection with Failure-Independent Path Protecting (FIPP) p-cycles, protection-as-primary, and priority-aware preemptive protection. Simulations on the USA and NSF topologies show that RARP reduces bandwidth blocking by up to ≈ 70% compared to state-of-the-art algorithms, while maintaining differentiated protection per class and improving energy efficiency under high load.

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Agradecimentos O presente trabalho foi realizado com apoio do CNPq (proc. 305489/2023-2) e com apoio da Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brasil, processo Fapesp 2025/03079-4.