文档介绍：Protocol
Overview
TCP/IP and the DoD Model
IP Addressing
ting
TCP/IP and the DoD Model
of Dod and OSI Model
The TCP/IP protocol suite
The Process / Application layer Protocols
The Host-to-Host Layer Protocols
The Layer Protocols
of DoD and OSI Model (1)
The TCP/IP suite was created by the DoD
The DoD model is a condensed version of the OSI model
Application
Presentation
Session
Transport
Network
Data Link
Physical
Process /
Application
Host-to-Host
Network
Access
DoD Model
OSI Model
Node-to-node munication
Controls user-interface specifications
Setting up the level of transmission service for applications
Takes care IP address and designate protocols for logical transmission of packets over the work
Oversees hardware addressing and defines protocols for the physical transmission of data
of DoD and OSI Model (2)
TCP/IP Model
OSI Model
The TCP/IP Protocol Suite
Process / Application
TCP
UDP
IP
ICMP
ARP
LAN Technologies:
, Fast , Token Ring, FDDI
WAN Technologies:
Serial Lines, Frame Relay, ATM
RARP
Host-to-Host
Network Access
FTP
TFTP
SMTP
LPD
SNMP
NFS
X Window
BootP/ DHCP
DNS
IGMP
The Process / Application Layer Protocols
– work
FTP – File Transfer Protocol
TFTP – Trivial File Transfer Protocol
NFS – Network File System
SMTP – Simple Mail Transfer Protocol
LPD – Line Printer Daemon
X Window – writing a GUI-based client/server applications
DNS – Domain Name Service (DNS)
BootP – Bootstrap Protocol
DHCP – Dynamic Host Configuration Protocol
The Host-to-Host Layer Protocols
To shield the upper-layer applications from plexities of work
TCP (Transmission Control Protocol)
Break down data from upper layers into Segment
Numbers and sequences each segment
Connection-oriented – virtual circuit required
User Datagram Protocol (UDP)
Break down data but not sequence the segment
Thin protocol which doesn’t take up much bandwidth on work
Connectionle