3. Reference model (IEEE 802)
Computer networks are based on the seven-layer OSI (Open System Interconnection) reference model defined by the ISO (International Standard Organization). In this model, each layer has a specific function and relies on the services of the layer immediately below. Let's take a brief look at the functionalities of these different layers:
Layer 1, or the physical layer, adapts computer binary data to the physical transmission medium;
Layer 2, or the link layer, ensures reliable transmission of information. Data is grouped into frames. The range of a frame is that of the physical medium on which it is transmitted;
Layer 3, or the network layer, enables access to any equipment on the network. This layer overcomes frame range limitations. This layer introduces the notion of address,...
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Reference model (IEEE 802)
Addressing
Bibliography
- (1) - TOUTAIN (L.) - Réseaux locaux et Internet. Des protocoles à l'interconnexion. - Éditions Hermès (2003).
Also in our database
Standards and norms
- Part 3 : Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications - IEEE Std. 802.3 - 2005
- IEEE Standard for Information technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements – Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications - IEEE 802.11...
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