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9.1 | OSI Model |
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9.1.5 | Transport layer |
The Transport Layer is responsible for
end-to-end delivery of information, including error recovery and flow
control.
Transport Layer protocols may be reliable or unreliable. Unreliable protocols may have little or no responsibility for establishing connections, acknowledgements, sequencing and flow control. It is possible that unreliable Transport Layer protocols will leave this responsibility to another layer's protocol. The reliable Transport Layer protocols may include responsibility for:
TCP/IP reliable Transport Layer protocol: TCP (Transmission Control Protocol)
TCP/IP unreliable Transport Layer protocol: UDP (User Datagram Protocol)
Transport Layer Protocols include:
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