DOD Reference Model
I prefer the DOD Reference Model to the OSI Reference
Model because of it's more simple structure and better classifications of events.
A comparison is as follows-
| OSI Reference Model |
|
Application
|
|
Presentation
|
|
Session
|
|
Transport
|
|
Network
|
|
Data Link
|
|
Physical
|
| DOD Reference Model |
|
Process / Application
|
|
Host to Host
|
|
Internet
|
|
Network
Access |
TCP/IP in the DOD Reference Model
| Process/Application |
Telnet
|
FTP
|
TFTP
|
SMTP
|
LPD
|
NFS
|
SNMP
|
X Windows
|
Others
|
| Host-to-Host |
TCP
|
UDP
|
| Internet |
ICMP
|
BootP
|
ARP
|
RARP
|
| Network Access |
Ethernet
|
Token Ring
|
FDDI
|
Frame Relay
|
Others
|