Hi everybody,

Let's examine how Ethernet/IP (Ethernet Industrial Protocol) fits within the OSI (Open Systems Interconnection) model, which is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers:

    Physical Layer (Layer 1): Ethernet/IP operates on standard Ethernet hardware, so it resides at this layer. The physical layer defines how data bits are transmitted and received over the physical medium.

    Data Link Layer (Layer 2): Ethernet/IP supports data transmission using Ethernet frames (or packets), so it's present at this layer as well.

    Network Layer (Layer 3): Ethernet/IP does not use IP addressing by itself, so it doesn't have a direct role at this layer. However, it leverages TCP/IP on top of it to operate in routed network environments.

    Transport Layer (Layer 4): Ethernet/IP uses UDP for real-time I/O data transmission and TCP for explicit messaging between devices. Therefore, Ethernet/IP is represented at this layer.

    Session Layer (Layer 5), Presentation Layer (Layer 6), and Application Layer (Layer 7): Ethernet/IP combines the functionalities of these three layers within the Common Industrial Protocol (CIP). CIP defines how devices and applications access data, device profiles, status, and other industrial automation functionalities.

In summary, Ethernet/IP operates across various layers of the OSI model, most notably at the Data Link Layer, Transport Layer, and Application Layer. While it doesn't have a direct counterpart in all layers of the OSI model, understanding how Ethernet/IP is positioned in these layers is essential when deciding how to configure and troubleshoot your industrial networks.

"Platforms established on an Ethernet and Ethernet/IP (TCP) foundation have become increasingly popular in many sectors of industry. This technology, which is both practical and offers time/place savings, has evolved and branched out over time and has been embedded in third-party platforms as well. Below, we have tried to answer some of the main questions we received from our valued visitors about Ethernet/IP (TCP)."

- How does the Ethernet/IP protocol work?
- What are the differences between Ethernet/IP and standard Ethernet?
- What are the advantages and disadvantages of Ethernet/IP?
- In which application areas is Ethernet/IP used?
- What security features does Ethernet/IP have?
- With which devices and systems can Ethernet/IP communicate?
- What is the history of Ethernet/IP?
- How is Ethernet/IP configured?
- What software and tools are available for Ethernet/IP?
- What are the differences between Ethernet/IP and Modbus TCP?
- What is known about the bandwidth and latency of Ethernet/IP?
- Which port number is used for the Ethernet/IP protocol?
- Where does Ethernet/IP fit in the OSI model?
- What certifications and standards are applicable to Ethernet/IP?
- How is Ethernet/IP used in industrial automation?
- With which programming languages can development be done for Ethernet/IP?
- What is the potential and future developments for Ethernet/IP?
- How is diagnostic and fault detection performed on Ethernet/IP?
- Which cables and connectors are used at the physical layer for Ethernet/IP?
- What specific security measures exist for Ethernet/IP?

+ What is Ethernet?

+ What is Ethernet/IP? 

+ What is EtherCAT?

+ Back to Automation main page