What is the difference between TCP/IP and OSI Model

Hey friends, in this article we will discuss two famous network reference models. First is the OSI Model and the other one is TCP/IP Model. Both models, play a vital role in understanding data flow between various networking protocols. Below, a diagram will help you to understand both models in a better way.

TCP/IP Model vs OSI Model

Difference between OSI and TCP/IP Model

OSI vs TCP/IP Model

In this table, we will discuss some major differences between TCP/IP and OSI Model.

S.No.OSI ModelTCP/IP Model
1.OSI Stands for Open System Interconnection.TCP/IP stands for Transmission Control Protocol / Internet Protocol.
2.7 Different Layers.4 Different Layers.
3.It is developed by ISO (International Standard Organisation)It is developed by DoD (Department of Defense).
4.Conceptual ModelUsed in actual data transmission between different computers.
5.It is a not Tangible model.It is a Tangible Model.

TCP/IP Model

TCP (Transmission Control Protocol)/IP (Internet Protocol), is a protocol stack which was developed by DoD (Department of Defense). It was developed before the OSI Model. This model has 4 different layers. Like the OSI Model, different protocols are working at different layers. Data flow between different computers flows this model. Different Layers of the TCP/IP model :

  • Application
  • Transport
  • Internet
  • Link

OSI Model

OSI stands for Open System Interconnection. It was developed in 1984 by ISO (International Standard Organisation). This model has 7 different layers. Unlike TCP/IP Model, this model provides a conceptual view of data flow between various computers. However, this is not a practical model, so it does not have practical usages. Different Layers of the OSI Model :

  • Application
  • Presentation
  • Session
  • Transport
  • Network
  • Data Link
  • Physical


TCP/IP is a protocol suite, which is used during data transmission over the network. TCP/IP developed by DoD. It has 4 different layers. On the other hand, OSI is a reference model, which have 7 different layers. OSI helps us to understand the data flow between different protocols.

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1 Comment

  1. I get that TCP/IP came before the OSI model but it seems the way I understand it (correct me if i’m wrong) is that the OSI model is the full model with all 7 layers and the TCP/IP model is basically only concerned with layers 3 and 4 of the OSI model. What role does TCP/IP do in the other layers that isn’t done by OSI?

    It seems like the TCP/IP is part of the whole and OSI is the whole. The TCP Protocol is used in the Transport layer and the IP Protocol is used in the Network/Internet layer and to my understanding, that’s it for TCP/IP. I get that it has to send and receive data to the application and network interface layers but the TCP/IP don’t do anything on the other layers do they?

    That’s my understanding anyway, if someone could correct me if i’m wrong. Thanks

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