Difference between OSI and TCP/IP Model
by
dipak
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Published
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Difference between OSI and TCP/IP Model
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OSI Model
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TCP/IP Model
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- OSI is a reference model.
- The OSI model however is a generic independent standard.
- It has 7 layers.
- Transport layer guarantees delivery of packets.
- Horizontal approach.
- Separate presentation layer.
- Separate session layer.
- Network layer provides both connectionless and connection oriented services.
- It defines the services, interfaces and protocols very clearly and makes a clear distinction between them.
- The protocols are better hidden and can be easily replaced as the technology changes.
- OSI truly is a general model.
- It has a problem of protocol filtering into a model.
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- TCP/IP is an implementation of OSI model
- TCP/IP Protocols are considered to be standards around which the internet has developed.
- It has 4 layers.
- Transport layer does not guarantee delivery of packets.
- Vertical approach.
- No presentation layer, characteristics are provided by application layer
- No session layer, characteristics are provided by transport layer.
- Network layer provides only connection less services.
- It does not clearly distinguishes between service interface and protocols
- It is not easy to replace the protocols.
- TCP/IP cannot be used for any other application.
- The model does not fit any protocol stack.
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