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计算机网络自顶向下方法(第4版)英文原版课件第三章.ppt

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文档介绍:Chapter 3 Transport Layer
Computer Networking: A Top Down Approach 4th edition. Jim Kurose, Keith Ross Addison-Wesley, July 2007.
A note on the use of these ppt slides:
We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following:
If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!)
If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this material.

Thanks and enjoy! JFK/KWR

All material copyright 1996-2007
J.F Kurose and K.W. Ross, All Rights Reserved
1
Transport Layer

Chapter 3: Transport Layer
Our goals:
understand principles behind transport layer services:
multiplexing/demultiplexing
reliable data transfer
flow control
congestion control
learn about transport layer protocols in the Internet:
UDP: connectionless transport
TCP: connection-oriented transport
TCP congestion control
2
Transport Layer

Chapter 3 outline
3.1 Transport-layer services
3.2 Multiplexing and demultiplexing
3.3 Connectionless transport: UDP
3.4 Principles of reliable data transfer
3.5 Connection-oriented transport: TCP
segment structure
reliable data transfer
flow control
connection management
3.6 Principles of congestion control
3.7 TCP congestion control
3
Transport Layer

Transport services and protocols
provide logical communication between app processes running on different hosts
transport protocols run in end systems
send side: breaks app messages into segments, passes to network layer
rcv side: reassembles segments into messages, passes to app layer
more than one transport protocol available to a

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计算机网络自顶向下方法(第4版)英文原版课件第三章.ppt

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