Overview[1]#
OSI-Model defines Communication Layers within the Open Systems Interconnection (OSI)OSI-Model is a Framework for describing Communication Layers
 |
OSI Model
| # | Layer | Level | Protocol Data Unit (PDU) | Function |
|---|---|---|---|---|
| 7 | Application Layer | Host layer | Data | High-level APIs, including resource sharing, remote file access |
| 6 | Presentation Layer | Host layer | Data | Translation of data between a networking service and an application; including character Encoding, data compression and encryption/decryption |
| 5 | Session Layer | Host layer | Data | Managing communication sessions, i.e. continuous exchange of information in the form of multiple back-and-forth transmissions between two nodes |
| 4 | Transport Layer | Host layer | Segment TCP/ Datagram (UDP) | Reliable protocol transmission of data segments between points on a network, including Packet segmentation, Acknowledgement and multiplexing |
| 3 | Network Layer | Media layer | Packet | Structuring and managing a multi-node network, including addressing, routing and traffic control |
| 2 | Data-link Layer | Media layer | Frame | Reliable protocol transmission of data frames between two nodes connected by a Physical Layer |
| 1 | Physical Layer | Media layer | Bit | Transmission and reception of raw bit streams over a physical medium |
Some Information Technology people have proposed we should add the Human Interconnection Model Proposed Layers
More Information#
There might be more information for this subject on one of the following:- AWS Application Load Balancer
- Application Layer
- Application Load Balancing
- Asynchronous Transfer Mode
- Bridge
- Communication Layers
- DECnet
- Data Encapsulation Method
- Data In Transit
- Data-link Layer
- Distributed Computing Environment
- Ethernet
- Frame
- Gateway
- Human Interconnection Model
- IEEE 802
- ISO 7498
- ISO Development Environment
- Load Balancing
- Logical Link Control
- Media Access Control
- Media Access Control Address
- Network Basic Input-Output System
- Network Layer
- Open Systems Interconnection
- Packet
- Packet segmentation
- Physical Layer
- Point-to-Point Protocol
- Presentation Layer
- Sequenced Packet Exchange
- Session
- Session Layer
- Socket Secure
- The Reliable Internetwork Troubleshooting Agent
- Transport Layer
- Virtual LAN
- Wide Area Information Server
- Xerox Network Systems
- based on information obtained 2017-04-01
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