文档介绍：Introduction to TCP/IP Protocol Suite
Wu Peng
Electronics & Information College
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Outline
What’s a protocol?
TCP/IP layering
OSI & TCP/IP Reference Model
Summary
Key words
Protocol n. 协议
Suite n. 组、套、族
Layering n. 分层
Router n. 路由器
Maintenance n. 维护
Modularization n. 模块化
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a human protocol and work protocol:
Hi
Hi
Got the
time?
2:00
TCP connection
req
TCP connection
response
Get
<file>
time
1 What’s a protocol(协议)?
We can regard all kind protocols as rules or regulations.
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1 What’s a protocol (协议)?
human protocols:
“what’s the time?”
“I have a question”
introductions
If specific msgs are sent
specific actions will be taken when these msgs are received, or emerge other events
network protocols:
machines rather than humans, munication activities in are governed by protocols
protocols define format, order of msgs sent and received work entities, and actions taken on msg transmission, reception
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Protocol Layering(分层)
Networks plex!
many “Components”:
hosts
routers
links of various media
applications
protocols
hardware, software
Question:
Is there any hope anizing structure work?
Or at least our discussion works?
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ticket (purchase)
baggage (check)
gates (load)
runway (takeoff)
airplane routing
departure
airport
arrival
airport
intermediate air-traffic
control centers
airplane routing
airplane routing
ticket (complain)
baggage (claim
gates (unload)
runway (land)
airplane routing
ticket
baggage
gate
takeoff/landing
airplane routing
Layering of airline functionality
Layers: each layer implements a service
Each layer has its own internal-layer actions
Each layer relies on services provided by layer below
a series of steps
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