A Petri Nets Modeling of Scheduling Policies in Ethernet Switch

Farah, Khamsa; Chabir, Karim; Abdelkrim, Mohamed Naceur

doi:10.1109/scc47175.2019.9116135

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…Our system is composed of an Ethernet network, a process, an actuator, a regulator and a sensor. Each system module is modelled by coloured PN and well presented in [25,26]. The sensor will be subjected to a bias injection fault (attack) which is used to inject a fixed value which replaces the data to be sent, that is, the sensor extracts the exact process value but this value will be replaced with a fix value for a sufficient time interval to infect the behaviour of the system.…”

Section: Internal Methodsmentioning

confidence: 99%

“…In a second step the regulator will execute the code segment which is used to compare this value with the desired value 'cons' and then a command will be calculated according to the state xk and the setpoint 'cons', this command 'uk' will be encapsulated in a packet and sent to the actuator through the place 'Net -input1'. Actuators, process and network are modelled in our previous papers [25,26].…”

Section: Network Controlled System Modelmentioning

confidence: 99%

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High level Petri nets‐based proposal of an integrated intrusion detection and prevention mechanism in network controlled systems

2022

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The authors’ work deals with modelling with coloured Petri nets (CPN) of network controlled systems (NCS) and exposes a proposal of a sensor fault detection and prevention mechanism. In NCS, the network must be viewed as part of the system and not just a means of communication. For this, two issues must be considered. The first consists of adapting the control and diagnostic laws to the performance of the network. The second is to guarantee the performance of the system. Each control loop containing a network is vulnerable to faults and cyber attacks and malicious users can intercept and listen to data during transmission. For that reason, it is essential to protect transmitted data against unauthorized access and modification and to diagnose components. In this paper, the authors presented a model with CPN of a NCS, the authors proposed a sensor fault detection and correction mechanism, then the authors injected a sensor fault and the authors tested the effectiveness of the proposed mechanism in detecting that fault and correcting its influence. Simulation results proved the success of the preventive mechanism in overcoming the influence of the fault and returning to normal behaviour.

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Section: Internal Methodsmentioning

confidence: 99%

Section: Network Controlled System Modelmentioning

confidence: 99%

High level Petri nets‐based proposal of an integrated intrusion detection and prevention mechanism in network controlled systems

2022

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“…Figure 4 shows the model of our Ethernet network based on CPN with all of its internal operations. )e modeling and performance analysis of a switched Ethernet network architecture requires the ability to model the operations of storing, routing, classifying, and scheduling packets through which the flow passes, as detailed in [28,29]. Namely, the storage in a FIFO input memory after receiving the frame.…”

Section: Ethernet Switch Modelingmentioning

confidence: 99%

“…)is algorithm is based on a fair method (serve in turn and according to their weight). High-priority packets will be served until the desired number is reached and "w1" becomes 0, which allows moving to lower-priority packets as observed by [29].…”

Section: Ethernet Switch Modelingmentioning

confidence: 99%

High-Level Petri Nets-Based Modeling of Network Controlled Systems under Communication Constraints (Network-Induced Delay)

Farah

Chabir

Abdelkrim

2022

Scientific Programming

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Our work deals with the problems of communication delays, packets dropouts, and quantization errors in the signal transmitted in network-controlled systems (NCS). Although NCS provides a paradigm for adapting to frequent changes in the manufacturing industry, modeling and managing operations are difficult issues due to the complex interactions between system entities and the effect of the network-induced delay on the closed-loop system. Therefore, our paper is about detecting degradations resulting from the insertion of a network in the regulation loop, which can even lead in some cases to the destabilization of the NCS. This paper mainly studies the problem of the graphic modeling, based on the colored Petri nets (CPN), of the NCS under communication constraints. Therefore, models of the communication network (Ethernet) and system entities are presented. Then, the influence of network-induced delay is detected. Finally, as an idea for future work, we propose a solution based on an SDN controller in order to avoid precedent degradations.

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