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Communication Dans Un Congrès Année : 2024

Virtual Multi-Topology Routing for QoS Constraints

Résumé

Multi-topology routing (MTR) provides an attractive alternative to segment routing for traffic engineering when network devices cannot be upgraded. However, due to a high overhead in terms of link state messages exchanged by topologies and the need to frequently update link weights to follow evolving network conditions, MTR is often limited to a small number of topologies and the satisfaction of loose QoS constraints. To overcome these limitations we propose vMTR, an MTR extension where demands are routed over virtual topologies that are silent, i.e., they do not exchange LSA messages, and that are continuously derived from a very limited set of real topologies, optimizing each QoS parameter. In this context, we present a polynomial and exact algorithm for vMTR and, as a benchmark, a local search algorithm for MTR. We show that vMTR helps reducing drastically the number of real topologies and that it is more robust to QoS changes.
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Dates et versions

hal-04453270 , version 1 (12-02-2024)

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  • HAL Id : hal-04453270 , version 1

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Nicolas Huin, Jeremie Leguay, Sébastien Martin. Virtual Multi-Topology Routing for QoS Constraints. NOMS 2024-2024 IEEE/IFIP Network Operations and Management Symposium, May 2024, Seoul, South Korea. ⟨hal-04453270⟩
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