Comparison of OSI and TCP/IP Reference Model

It’s time to look at the two models that we’ve learned to date. Let’s begin by discussing the similarities the models share.

Here are some similarities in OSI Reference Model and TCP/IP Reference Model.

• Both have layers of architecture.
• Layers provide similar functionalities.
• Both are protocols stacks.
• Both are models of reference.

Differentialities Between OSI and TCP/IP Model of Reference

There are a few major distinctions in OSI Reference Model and TCP/IP Reference Model. See diagrammatic comparison below.

OSI(Open System Interconnection)TCP/IP(Transmission Control Protocol / Internet Protocol)1. OSI is a general and protocol-independent standard acting as a gateway to the internet and the user.1. The TCP/IP model is built on standard protocols that the Internet has evolved. It is a communications protocol that allows the connection to hosts on the network.2. 2. OSI model, the transport layer ensures the transmission of packets.2. In the TCP/IP model, the transport layer doesn’t guarantee the that packets will be delivered. However, the TCP/IP model is more reliable.3. Follows the vertical approach.3. Follows horizontal approach.4. OSI model comes with a distinct Session layer and Presentation layer.4. TCP/IP doesn’t have a separate presentation layer , or Session layer.5. Transport Layer is Connection Oriented.5. Transportation Layer includes both Connection-Oriented as well as Connectionless.6. The Network Layer can be described as both connection oriented as well as Connection-less.6. Network Layer is the absence of connection.7. OSI is a model of reference that is the basis on which networks are constructed. Usually, it’s employed as a guide.7. The TCP/IP model is an attempt to implement an OSI model.8. The network layer of the OSI model offers both connection-oriented as well as connectionless service.8. The Network layer in the TCP/IP model allows for connectionless service.9. OSI model is not able to solve the problem of integrating the protocols to the.9. The TCP/IP model is not compatible with any protocol10. Protocols are concealed in the OSI model and can be easily changed as technology evolves.10. In TCP/IP, replacing protocols isn’t easy.11. OSI model defines interfaces, services, and protocols in a clear manner and clearly differentiates between the three. It is not dependent on protocols.11. In TCP/IP the interfaces, services and protocols aren’t clearly distinct. It’s also protocol dependent.12. It is made up of 7 layers.12. It is made up of four layers.

Diagrammatic Comparison between OSI Reference Model and TCP/IP Reference Model