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Comparing In-switch P4-based and Controller-based Network Control Load Balancing

Ramos, M. ; Corujo, D. ; Silva, R. ; Aguiar, R. ; Radwan, A.

Comparing In-switch P4-based and Controller-based Network Control Load Balancing, Proc IEEE Middle East Conference on Communications and Networking IEEE MECOM, Cairo, Egypt, Vol. , pp. - , November, 2025.

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Abstract
This paper targets the need for more efficient networking solutions to support the Internet’s growth, by proposing a decentralized SDN (Software-Defined Networking) management framework that uses real-time traffic monitoring and P4-programmable switches to optimize resource allocation. By embedding part of the control logic in the data plane, the system improves flexibility, reduces latency, and lowers communication overhead. A stateful monitoring function modeled as an Extended finite-state machine (EFSM) enables switches to track local traffic autonomously. The approach is validated through simulations with BMv2 switches in Mininet, analyzing performance under varying traffic conditions.