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Network Analysis

Network Analysis

Introduction

In modern industrial environments, network analysis along with their data flow has become crucial due to the increasing reliance on interconnected systems and smart manufacturing processes. Industrial communication networks facilitate the exchange of information between various devices, sensors, controllers, and machines, forming the backbone of automation systems. By analyzing these networks, organizations ensure reliable, real-time communication essential for maintaining efficiency, safety, and scalability in operations. 

One of the primary reasons for analyzing industrial networks is to identify potential bottlenecks, inefficiencies, and vulnerabilities within the data flow. Efficient data transmission between devices is critical for coordinating operations, synchronizing machines, and managing production lines. Analyzing data flow enables engineers to optimize communication protocols and ensure that data is transmitted accurately and without delay. This is especially important in time-sensitive applications such as motion control, where even slight delays can cause disruptions. High latency areas point to possible bottlenecks, and monitoring tools can help in real-time to address these issues 

Furthermore, network analysis also plays a pivotal role in securing operations against cyber threats. As industrial systems become more connected through the Industrial Internet of Things (IIoT), they become potential targets for cyberattacks. Monitoring and analyzing data flow helps detect suspicious activities and safeguard critical infrastructure, thus ensuring the integrity and confidentiality of industrial processes. The adoption of common computing platforms and open network technologies has exposed these systems to new vulnerabilities, highlighting the importance of robust industrial network security measures. 

Types of network analysis

Depending on the perspective and intention, there are different types of network analysis: 

  • Topology Analysis

    This involves studying the physical and logical layout of the network, including the arrangement of devices, cables, and communication protocols used. Understanding the network topology helps in optimizing the network for better performance. 

  • Traffic Analysis

    Analyzing the traffic patterns within the network provides insights into the volume of data being transmitted, the frequency of communication between devices, and the types of messages exchanged. By monitoring network traffic, engineers can detect anomalies, diagnose performance issues, and optimize network bandwidth usage. 

  • Protocol Analysis 

    Industrial communication networks often use specific communication protocols tailored to the requirements of industrial automation, such as Modbus, PROFIBUS, PROFINET, Ethernet/IP, etc. Protocol analysis involves examining the structure and behavior of these protocols to ensure compatibility, interoperability, and adherence to industry standards. 

  • Performance Analysis

    Evaluating network performance metrics such as latency, jitter, throughput, and packet loss helps in assessing the responsiveness and reliability of the network. Performance analysis identifies areas for improvement, such as optimizing communication protocols, upgrading hardware components, or implementing Quality of Service (QoS) mechanisms. 

  • Security Analysis

    With the increasing connectivity of industrial systems, cybersecurity has become a critical concern. Network analysis includes assessing the security posture of industrial communication networks, identifying vulnerabilities, and implementing measures to protect against cyber threats, such as unauthorized access, data breaches, and malware attacks. 

Hilscher’s Tools for Network Analysis

Hilscher is a leading provider of industrial communication and automation solutions, and network analysis is a core part of their expertise. The company has developed specialized hardware and software tools that enable comprehensive network analysis and diagnostics for industrial Ethernet and fieldbus networks, including: 

netANALYZER

A hardware-based network analyzer that can monitor and diagnose real-time Ethernet networks without impacting the live system. It provides detailed insights into network performance, traffic patterns, and potential issues. 

netANALYZER Scope

This is the software companion to netANALYZER, providing an intuitive graphical interface to visualize and analyze the captured network data. 

netMIRROR

A passive network TAP (Test Access Point) solution that allows non-intrusive monitoring and analysis of industrial Ethernet networks. 

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