Freescale Semiconductor TWR-MCF52259-Ethenet User Manual page 33

The Open Systems Interconnection Reference Model (OSI Model or OSI Reference Model for short) is a
layered abstract description for communications and computer network protocol design, developed as part of
the Open Systems Interconnect initiative.
Layer 7 – Application
Layer 6 – Presentation
Layer 5 – Session
Layer 4 – Transport
Layer 3 – Network
Layer 2 – Data Link (MAC)
Layer 1 – Physical (PHY)
All People Seems To Need Data Processing".
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HTTP, SMTP, POP3, TFTP
Berkeley Socket Interface, XTI, Custom
Berkeley Socket Interface, XTI, Custom
TCP, UDP
IP, ARP, ICMP (Internet Control Message Protocol)
Ethernet, PPP
RS232, 10BASE-T, DSL, T1
The OSI 7 Layer
32
Model
TCP/IP Four
Layers
Equivalent:
Application
Transport
Network
Link
TM