Simulation-based Evaluation of a Synchronous Transaction Model for Time-Sensitive Software-Defined Networks

TL;DR

This paper introduces a transactional reconfiguration model for Time-Sensitive Networking (TSN) in SDN environments, ensuring consistency without increasing latency for real-time traffic.

Contribution

It presents a novel synchronous transactional model for network reconfigurations in TSN over SDN, enhancing consistency without impacting real-time traffic latency.

Findings

Transactional reconfigurations maintain consistency in TSN.

No additional latency introduced for real-time frames.

Improved reliability of network reconfigurations.

Abstract

Real-time networks based on Ethernet require robust quality-of-service for time-critical traffic. The Time-Sensitive Networking (TSN) collection of standards enables this in real-time environments like vehicle on-board networks. Runtime reconfigurations in TSN must respect the deadlines of real-time traffic. Software-Defined Networking (SDN) moves the control plane of network devices to the SDN controller, making these networks programmable. This allows reconfigurations from a central point in the network. In this work, we present a transactional model for network reconfigurations that are synchronously executed in all network devices. We evaluate its performance in a case study against nontransactional reconfigurations and show that synchronous transactions enable consistency for reconfigurations in TSN without increased latencies for real-time frames.