Prioritization and offloading in P4 switch integrated with NFV

Farhin Faiza Neha (), Yuan-Cheng Lai (), Md. Shohrab Hossain () and Ying-Dar Lin ()
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Farhin Faiza Neha: Bangladesh University of Engineering and Technology
Yuan-Cheng Lai: National Taiwan University of Science and Technology
Md. Shohrab Hossain: Bangladesh University of Engineering and Technology
Ying-Dar Lin: National Yang Ming Chiao Tung University

Telecommunication Systems: Modelling, Analysis, Design and Management, 2024, vol. 86, issue 3, No 13, 584 pages

Abstract: Abstract The architecture of integrating Software Defined Networking (SDN) with Network Function Virtualization (NFV) is excellent because the former virtualizes the control plane, and the latter virtualizes the data plane. As Programming Protocol-independent Packet Processors (P4) become popular, the architecture integrating SDN with NFV may shift from traditional switches to P4 switches. In this architecture, which integrates P4 switch and NFV (P4 + NFV), network functions can be provided in both P4 switches (PNF) and NFV (VNF). Thus, to minimize packet delay, an offloading problem between P4 switches and NFV in this P4 + NFV should be addressed. This paper tackles this offloading problem and figures out the prioritization mechanism between newly arriving packets and packets that require VNF for minimizing packet delay. We model and analyze the P4 + NFV architecture using an M/M/1 queuing model with non-preemptive priority. Also, we propose an optimization solution based on gradient descent to find the optimal offloading probability of going to VNF. Results show that optimal offloading from P4 switch to NFV can reduce the average packet delay from 13.74 to 40.73%, when packets requiring VNF are given higher priority than newly arriving packets.

Keywords: Software defined networking (SDN); Network function virtualization (NFV); P4 switch; Priority queue; Optimal probability (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11235-024-01129-2

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