'Receiver window' diaporamas de présentation

Chapter 10 TCP

TCP services Numbering bytes Flow control Error control TCP timers. Congestion control Segment Connection TCP operation TCP package. Chapter 10 TCP. Introduction. ???????? reliability ????????????????? ????????? ????? IP ???????????? TCP Process-to-process comm.: same with UDP

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Transport Protocols

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The TCP Segment Header

The TCP Segment Header. TCP header length in 32 bit words, URG-urgent, ACK- ack number is valid, PSH-push, RST-reset connection, SYN-used to establish connection, FIN-used to release connection. The TCP Segment Header (2).

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Lecture #13: Example Data Link Protocols.

Lecture #13: Example Data Link Protocols. C o n t e n t s Types of services provided by DLL protocols Flow control functions Flow control protocols Stop-and-Wait protocols Sliding window protocols Go-back- n Selective Repeat/Reject Performance comparison HDLC Internet DLL protocols. 4.

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15-441 Computer Networking

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Transport and Naming: UDP, TCP, DNS

Transport and Naming: UDP, TCP, DNS. CS 4251: Computer Networking II Nick Feamster Spring 2008. Transport Protocols. Lowest level end-to-end protocol. Header generated by sender is interpreted only by the destination Routers view transport header as part of the payload. 7. 7. 6. 6. 5.

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TCP (Part II)

TCP (Part II). Shivkumar Kalyanaraman Rensselaer Polytechnic Institute shivkuma@ecse.rpi.edu http://www.ecse.rpi.edu/Homepages/shivkuma. TCP interactive data flow TCP bulk data flow TCP congestion control TCP timers TCP futures and performance

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TCP (Part II)

TCP (Part II). Shivkumar Kalyanaraman Rensselaer Polytechnic Institute shivkuma@ecse.rpi.edu http://www.ecse.rpi.edu/Homepages/shivkuma. TCP interactive data flow TCP bulk data flow TCP congestion control TCP timers TCP futures and performance

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15-441 Computer Networking

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15-441 Computer Networking

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TCP (Part II)

TCP (Part II). Shivkumar Kalyanaraman Rensselaer Polytechnic Institute shivkuma@ecse.rpi.edu http://www.ecse.rpi.edu/Homepages/shivkuma. TCP interactive data flow TCP bulk data flow TCP congestion control TCP timers TCP futures and performance

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Data link layer (2)

Data link layer (2). Review. Framing. ESC. What happens if ESC ESC FLAG ESC ESC real FLAG How to tell whether a received frame is good or not? Three protocols. The last one deals with slow receiver and noisy channel. Solution is ack (expc) plus sequence number. Stop and Wait (Protocol 3).

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CSCI-1680 Transport Layer I

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Net 222: Communications and networks fundamentals ( Practical Part)

Net 222: Communications and networks fundamentals ( Practical Part). Tutorial 4 : Chapter 7 Data & computer communications. Stop-and-Wait ARQ. Simplest flow and error control protocol Data frames and ACK frames are numbered alternately (0,1)

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TCP Sliding Windows, Flow Control, and Congestion Control

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Transport Layer

Transport Layer. Problems with network layer services Transport layer services Addressing Connection establishment and release Flow control and buffering Multiplexing TCP and UDP Some performance guidelines.

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Midterm Review

Midterm Review. Physical Layer. Physical layer design goal: send out bits as fast as possible with acceptable low error ratio C=B*log(1+S/N) C is the capacity of the channel, B is the bandwidth of the channel, S is power of the signal and N is the power of the noise

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Chapter 3: The Data Link Layer

Chapter 3: The Data Link Layer to achieve reliable, efficient communication between two physically connected machines. Design issues: services interface to the network layer how to group bits into frames (framing) how to deal with errors (error control).

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Concluding Remarks P-OOK

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draft-asveren-dime-cong-02 tasveren@sonusnet ; vfajardo@toshiba 4 December 2007

draft-asveren-dime-cong-02 tasveren@sonusnet.com ; vfajardo@toshiba.com 4 December 2007. Why do we need overload information?. Preventing aggravation of overload condition Load balancing Another parameter in routing decision

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