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TCP/IP Transmission Control Protocol / Internet Protocol

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TCP/IP Transmission Control Protocol / Internet Protocol TCP/IP & OSI In OSI reference model terminology -the TCP/IP protocol suite covers the network and transport ... – PowerPoint PPT presentation

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Title: TCP/IP Transmission Control Protocol / Internet Protocol


1
TCP/IPTransmission Control Protocol / Internet
Protocol
2
TCP/IP OSI
  • In OSI reference model terminology -the TCP/IP
    protocol suite covers the network and transport
    layers.
  • TCP/IP can be used on many data-link layers (can
    support many network hardware implementations).

3
TCP/IP PROTOCOL SUITE
The layers in the TCP/IP protocol suite do not
exactly match those in the OSI model. The
original TCP/IP protocol suite was defined as
having four layers host-to-network, internet,
transport, and application. However, when TCP/IP
is compared to OSI, we can say that the TCP/IP
protocol suite is made of five layers physical,
data link, network, transport, and application.
Physical and Data Link LayersNetwork
LayerTransport Layer Application Layer
4
Internet ProtocolThe IP in TCP/IP
  • IP is the network layer
  • packet delivery service (host-to-host).
  • translation between different data-link protocols.

5
Transport Layer TCP/IP
  • Q We know that IP is the network layer - so TCP
    must be the transport layer, right ?
  • A No well, almost.
  • TCP is only part of the TCP/IP transport layer -
    the other part is UDP (User Datagram Protocol).

6
Process Layer
Transport Layer
Network Layer
Data-Link Layer
7
Packet Encapsulation
  • The data is sent down the protocol stack
  • Each layer adds to the data by prepending headers

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