Description: The interconnection of open systems is a conceptual model that standardizes the functions of a telecommunications or computing system into seven layers of abstraction. This approach allows different systems and devices to communicate effectively with each other, regardless of their internal architecture. Each layer of the model has specific functions and communicates with adjacent layers, facilitating interoperability and modularity. The layers include physical, data link, network, transport, session, presentation, and application. This model not only provides a framework for the design and implementation of networks but also establishes a common language for technology professionals, simplifying problem-solving and the integration of new systems. The interconnection of open systems is fundamental in the development of communication protocols, networks and security, network segmentation, as well as in wide area network (WAN) and local area network (LAN) architectures. Its relevance extends to the creation of standards that allow communication between devices from different manufacturers, promoting a more cohesive and efficient technological ecosystem.
History: The interconnection of open systems was formalized in the 1970s with the development of the OSI (Open Systems Interconnection) model by the International Organization for Standardization (ISO). This model was created to address the growing complexity of computer networks and the need for a standardized framework that facilitated communication between different systems. Over the years, the OSI model has evolved and influenced the development of numerous communication protocols, such as TCP/IP, which became the foundation of the Internet.
Uses: The interconnection of open systems is primarily used in the design and implementation of computer networks, allowing different devices and operating systems to communicate with each other. It is fundamental in creating standardized communication protocols that ensure interoperability between equipment from different manufacturers. Additionally, it is applied in network segmentation, where networks are divided into smaller subnets to improve efficiency and security. It is also essential in configuring WAN and LAN networks, facilitating the connection of devices in different geographical locations and within the same local environment.
Examples: An example of the interconnection of open systems is the use of the TCP/IP protocol, which allows communication between different devices on the Internet. Another example is the implementation of LAN networks in offices, where computers from different brands and operating systems can share resources and data. Additionally, in enterprise environments, network segmentation using VLANs (Virtual Local Area Networks) is a practical application that enhances network security and performance.
