Comparison of OSI Reference
Model and TCP/IP Reference Model
Following are some major differences between OSI
Reference Model and TCP/IP Reference Model, with diagrammatic comparison below.
OSI(Open System
Interconnection)
|
TCP/IP(Transmission Control
Protocol / Internet Protocol)
|
1. OSI is a generic, protocol independent standard,
acting as a communication gateway between the network and end user.
|
1. TCP/IP model is based on standard protocols around
which the Internet has developed. It is a communication protocol, which
allows connection of hosts over a network.
|
2. In OSI model the transport layer guarantees the
delivery of packets.
|
2. In TCP/IP model the transport layer does not
guarantees delivery of packets. Still the TCP/IP model is more reliable.
|
3. Follows vertical approach.
|
3. Follows horizontal approach.
|
4. OSI model has a separate Presentation layer and
Session layer.
|
4. TCP/IP does not have a separate Presentation layer
or Session layer.
|
5. OSI is a reference model around which the networks
are built. Generally it is used as a guidance tool.
|
5. TCP/IP model is, in a way implementation of the OSI
model.
|
6. Network layer of OSI model provides both connection
oriented and connectionless service.
|
6. The Network layer in TCP/IP model provides
connectionless service.
|
7. OSI model has a problem of fitting the protocols
into the model.
|
7. TCP/IP model does not fit any protocol
|
8. Protocols are hidden in OSI model and are easily
replaced as the technology changes.
|
8. In TCP/IP replacing protocol is not easy.
|
9. OSI model defines services, interfaces and protocols
very clearly and makes clear distinction between them. It is protocol
independent.
|
9. In TCP/IP, services, interfaces and protocols are
not clearly separated. It is also protocol dependent.
|
10. It has 7 layers
|
10. It has 4 layers
|
0 Comments:
Post a Comment