rdt2.0 has a fatal flaw!
|
|
- Barbra Gordon
- 5 years ago
- Views:
Transcription
1 rdt2. has a fatal flaw! rdt2.1:, handles garbled ACK/NAKs what happens if ACK/NAK corrupted? doesn t know what happened at! can t just retransmit: possible duplicate handling duplicates: retransmits current pkt if ACK/NAK corrupted adds sequence number to each pkt two seq. # s (,1) will suffice. Why? discards (doesn t deliver up) duplicate pkt && isack(rcvpkt) isnak(rcvpkt) ) sndpkt = make_pkt(, data, checksum) call from ACK or NAK 1 ACK or NAK call 1 from isnak(rcvpkt) ) && isack(rcvpkt) sndpkt = make_pkt(1, data, checksum) Transport Layer 3-29 Transport Layer 3-3 rdt2.1:, handles garbled ACK/NAKs notcorrupt(rcvpkt) && has_seq(rcvpkt) extract(rcvpkt,data) deliver_data(data) corrupt(rcvpkt) corrupt(rcvpkt) sndpkt = make_pkt(nak,checksum) sndpkt = make_pkt(nak,checksum) notcorrupt(rcvpkt) && has_seq1(rcvpkt) from below 1 from below notcorrupt(rcvpkt) && has_seq1(rcvpkt) notcorrupt(rcvpkt) && has_seq(rcvpkt) rdt2.2: a NAK-free protocol same functionality as rdt2.1, using ACKs only instead of NAK, sends ACK for last pkt received OK must explicitly include seq # of pkt being ACKed duplicate ACK at results in same action as NAK: retransmit current pkt extract(rcvpkt,data) deliver_data(data) Transport Layer 3-31 Transport Layer 3-32
2 rdt2.2:, fragments rdt3.: channels with errors and loss (corrupt(rcvpkt) has_seq1(rcvpkt)) sndpkt = make_pkt(ack, 1, checksum) sndpkt = make_pkt(, data, checksum) call from from below ACK FSM fragment FSM fragment notcorrupt(rcvpkt) && has_seq1(rcvpkt) extract(rcvpkt,data) deliver_data(data) sndpkt = make_pkt(ack, 1, checksum) isack(rcvpkt,1) ) && isack(rcvpkt,) Transport Layer 3-33 new assumption: underlying channel can also lose packets (data, ACKs) checksum, seq. #, ACKs, retransmissions will be of help but not enough approach: waits reasonable amount of time for ACK retransmits if no ACK received in this time if pkt (or ACK) just delayed (not lost): retransmission will be duplicate, but seq. # s already handles this must specify seq # of pkt being ACKed requires countdown timer Transport Layer 3-34 rdt3. rdt3. in action call from && isack(rcvpkt,1) stop_timer isack(rcvpkt,) ) sndpkt = make_pkt(, data, checksum) Wait for ACK 1 Wait for call 1 from sndpkt = make_pkt(1, data, checksum) isack(rcvpkt,1) ) && isack(rcvpkt,) stop_timer rcv send rcv send rcv send (a) no loss rcv send resend rcv X loss (b) packet loss send rcv send Transport Layer 3-35 Transport Layer 3-36
3 rdt3. in action rcv send resend rcv X loss (c) ACK loss send rcv rcv (detect duplicate) send rcv send resend rcv rcv send rcv rcv (detect duplicate) send (detect duplicate) send (d) premature / delayed ACK Transport Layer 3-37 Performance of rdt3. rdt3. is correct, but performance stinks e.g.: 1 Gbps link, 15 ms prop. delay, 8 bits packet: D trans = L R U : utilization fraction of time busy sending U = 8 bits = 1 9 = 8 microsecs bits/sec L / R RTT + L / R = =.27 if RTT=3 msec, 1KB pkt: 27 kbits/sec throughput over 1 Gbps link stop-and-wait protocol limits use of physical resources! Transport Layer 3-38 rdt3.: stop-and-wait protocol first packet bit transmitted, t = last packet bit transmitted, t = L / R RTT first packet bit arrives last packet bit arrives, send ACK Pipelined ARQ protocols pipelining: allows multiple, in-flight, yetto-be-acknowledged pkts range of sequence numbers must be increased buffering at and/or ACK arrives, send next packet, t = RTT + L / R U = L / R RTT + L / R = =.27 two generic forms of pipelined ARQ protocols: go-back-n, selective repeat Transport Layer 3-39 Transport Layer 3-4
4 Pipelining: increased utilization Pipelined ARQ protocols: overview first packet bit transmitted, t = last bit transmitted, t = L / R RTT ACK arrives, send next packet, t = RTT + L / R U = 3L / R RTT + L / R = first packet bit arrives last packet bit arrives, send ACK last bit of 2 nd packet arrives, send ACK last bit of 3 rd packet arrives, send ACK 3-packet pipelining increases utilization by a factor of 3! =.81 Go-back-N (GBN): can have up to N unacked packets in pipeline only sends cumulative ack indicates that all packets up to acked # correctly received at the has timer for oldest unacked packet when timer expires, retransmit all unacked packets Selective Repeat (SR): can have up to N unacked packets in pipeline rcvr sends individual ack for each packet maintains timer for each unacked packet when timer expires, retransmit only that unacked packet Transport Layer 3-41 Transport Layer 3-42 Go-Back-N: k-bit seq # in pkt header window of up to N, consecutive unacked pkts allowed ACK(n): ACKs all pkts up to, including seq # n - cumulative ACK may receive duplicate ACKs (see ) timer for oldest in-flight pkt (n): retransmit packet n and all higher seq # pkts in window Transport Layer 3-43 Go-Back-N: ACK-only: always send ACK for correctly-received pkt with highest in-order seq # may generate duplicate ACKs need only remember expectedseqnum out-of-order pkt: discard (don t buffer): no buffering! re-ack pkt with highest in-order seq # Transport Layer 3-44
5 GBN in action window (N=4) send send pkt3 (wait) rcv, send pkt4 rcv, send pkt5 ignore duplicate ACK pkt 2 send pkt3 send pkt4 send pkt5 Xloss receive, send receive, receive pkt3, discard, (re) receive pkt4, discard, (re) receive pkt5, discard, (re) rcv pkt2, deliver, send ACK2 rcv pkt3, deliver, send ACK3 rcv pkt4, deliver, send ACK4 rcv pkt5, deliver, send ACK5 Selective repeat individually acknowledges all correctly received pkts buffers pkts, as needed, for eventual in-order delivery to upper layer only resends pkts for which ACK not received timer for each unacked pkt window N consecutive seq # s limits seq #s of sent, unacked pkts Transport Layer 3-45 Transport Layer 3-46 Selective repeat:, windows Selective repeat data from : if next available seq # in window, send pkt (n): resend pkt n, restart timer ACK(n) in [sendbase,sendbase+n-1]: mark pkt n as received if n is equal to sendbase, advance window sendbase to next unacked seq # pkt n in [rcvbase, rcvbase+n-1] send ACK(n) out-of-order: buffer in-order: deliver (also deliver buffered, in-order pkts), advance window rcvbase to next not-yetreceived pkt pkt n in [rcvbase-n,rcvbase-1] ACK(n) otherwise: ignore Transport Layer 3-47 Transport Layer 3-48
6 Selective repeat in action window (N=4) send send pkt3 (wait) rcv, send pkt4 rcv, send pkt5 record ACK3 arrived pkt 2 record ACK4 arrived record ACK5 arrived Xloss receive, send receive, receive pkt3, buffer, send ACK3 receive pkt4, buffer, send ACK4 receive pkt5, buffer, send ACK5 rcv pkt2; deliver pkt2, pkt3, pkt4, pkt5; send ACK2 Relationship between seq # size and window size N & retransmit n-bit sequence number: Go-back-N ARQ: N=2 n -1 Selective-repeat ARQ: N=2 n-1 problem with too-large windows: ACK7 At this point, the expects the next frame & retransmit ACK4 At this point, the expects new frames 5,6,7,,1 Q: what happens when ACK2 arrives? <Go-back-N: N=8> <Selective-repeat: N=5> Transport Layer 3-49 Transport Layer 3-5
Chapter III: Transport Layer
Chapter III: Transport Layer UG3 Computer Communications & Networks (COMN) Myungjin Lee myungjin.lee@ed.ac.uk Slides copyright of Kurose and Ross rdt2.0 has a fatal flaw! what happens if ACK/NAK corrupted?
More informationChapter 3 outline. 3.5 connection-oriented transport: TCP segment structure reliable data transfer flow control connection management
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
More informationCMPE 150/L : Introduction to Computer Networks. Chen Qian Computer Engineering UCSC Baskin Engineering Lecture 8
CMPE 150/L : Introduction to Computer Networks Chen Qian Computer Engineering UCSC Baskin Engineering Lecture 8 1 A lot of students have been having difficulty seeing the HTTP packets generated when navigating
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer Lec 9: Reliable Data Transfer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 All material copyright 1996-2012 J.F Kurose
More informationCSC 4900 Computer Networks: Reliable Data Transport
CSC 4900 Computer Networks: Reliable Data Transport Professor Henry Carter Fall 2017 Last Time Multiplexing/Demultiplexing at the Transport Layer. How do TCP and UDP differ? UDP gives us virtually bare-bones
More informationRdt2.0: channel with packet errors (no loss!)
Rdt2.0: channel with packet errors (no loss!) What mechanisms do we need to deal with error? Error detection Add checksum bits Feedback Acknowledgements (ACKs): receiver explicitly tells sender that packet
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationCMSC 332 Computer Networks Reliable Data Transfer
CMSC 332 Computer Networks Reliable Data Transfer Professor Szajda Last Time Multiplexing/Demultiplexing at the Transport Layer. How do TCP and UDP differ? UDP gives us virtually bare-bones access to the
More informationCS 3516: Advanced Computer Networks
Welcome to CS 3516: Advanced Computer Networks Prof. Yanhua Li Time: 9:00am 9:50am M, T, R, and F Location: Fuller 320 Fall 2017 A-term 1 Some slides are originally from the course materials of the textbook
More informationInternet transport-layer protocols. Transport services and protocols. Sending and receiving. Connection-oriented (TCP) Connection-oriented
Transport services and protocols Internet -layer protocols logical communication between processes protocols run in end systems send side: breaks app messages into segments, passes to layer rcv side: reassembles
More informationTransport services and protocols. Chapter 3 outline. Internet transport-layer protocols Chapter 3 outline. Multiplexing/demultiplexing
Chapter 3 outline 3.1 Transport-layer services 3.2 Multiplexing and demultiplexing 3.3 Connectionless : UDP 3.4 Principles of reliable data transfer 3.5 Connection-oriented : TCP segment structure reliable
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationData Communications & Networks. Session 6 Main Theme Reliable Data Transfer. Dr. Jean-Claude Franchitti
Data Communications & Networks Session 6 Main Theme Reliable Data Transfer Dr. Jean-Claude Franchitti New York University Computer Science Department Courant Institute of Mathematical Sciences Adapted
More informationTransport layer: Outline
Transport layer Our goals: Understand principles behind transport layer services: Multiplexing/demultiplexing Reliable data transfer Flow control Congestion control Learn about transport layer protocols
More informationTransport layer. Our goals: Understand principles behind transport layer services: Learn about transport layer protocols in the Internet:
Transport layer Our goals: Understand principles behind transport layer services: Multiplexing/demultiplexing Reliable data transfer Flow control Congestion control Learn about transport layer protocols
More informationCC451 Computer Networks
CC451 Computer Networks Lecture 5 Transport Layer Transport Layer 3-1 Chapter 3 Transport Layer A note on the use of these ppt slides: We re making these slides freely available to all (faculty, students,
More informationCSC 401 Data and Computer Communications Networks
CSC 401 Data and Computer Communications Networks Transport Layer Pipelined Reliable Data Transfer Protocols: Go-Back-N and Selective Repeat Sec 3.4.2-3.4.3 Prof. Lina Battestilli Fall 2017 Transport Layer
More informationLecture 10: Transpor Layer Principles of Reliable Data Transfer
Lecture 10: Transpor Layer Principles of Reliable Data Transfer COMP 332, Spring 2018 Victoria Manfredi Acknowledgements: materials adapted from Computer Networking: A Top Down Approach 7 th edition: 1996-2016,
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer Reti degli Elaboratori Canale AL e MZ Prof.ssa Chiara Petrioli a.a. 2016/2017 We thank for the support material Prof. Kurose-Ross All material copyright 1996-2012 J.F Kurose and
More informationTDTS06: Computer Networks
TDTS06: Computer Networks Instructor: Niklas Carlsson Email: niklas.carlsson@liu.se Notes derived from Computer Networking: A Top Down Approach, by Jim Kurose and Keith Ross, Addison-Wesley. The slides
More informationCSC 401 Data and Computer Communications Networks
CSC 401 Data and Computer Communications Networks Transport Layer Principles of Reliable Data Transfer Sec 3.4 Prof. Lina Battestilli 2017 Fall Transport Layer Chapter 3 Outline 3.1 Transport-layer Services
More informationCSC 8560 Computer Networks: Transport Layer
CSC 8560 Computer Networks: Transport Layer Professor Henry Carter Fall 2017 Last Time... Sockets programming API TCP and UDP look different. Remember, there is no connect() in UDP - just start sending
More informationChapter 3 outline. TDTS06 Computer networks. Principles of Reliable data transfer. Reliable data transfer: getting started
Chapter 3 outline TDTS06 Computer networks Lecture 4: Transport layer II Reliable data delivery and TCP Jose M. Peña, jospe@ida.liu.se IDA/ADIT, LiU 2009-08-28 3.1 Transport-layer services 3.2 Multiplexing
More informationChapter 3: Transport Layer
Chapter 3: Transport Layer Chapter goals: understand principles behind transport layer services: multiplexing/demultiplex ing reliable data transfer flow control congestion control instantiation and implementation
More informationCOSC4377. Useful Linux Tool: screen
Lecture 10 Useful Linux Tool: screen Alternative to having multiple ssh/putty screens, you can have multiple virtual screens within the same session. To open a screen session: ~$ screen To suspend the
More informationLecture 07 The Transport Layer (TCP & UDP) Dr. Anis Koubaa
NET 331 Computer Networks Lecture 07 The Transport Layer (TCP & UDP) Dr. Anis Koubaa Reformatted slides from textbook Computer Networking a top-down appraoch, Fifth Edition by Kurose and Ross, (c) Pearson
More informationChapter 2: outline. 2.1 principles of network applications app architectures app requirements
Chapter 2: outline 2.1 principles of network applications app architectures app requirements 2.2 Web and HTTP 2.3 FTP 2.4 electronic mail SMTP, POP3, IMAP 2.5 DNS 2.6 P2P applications 2.7 socket programming
More informationCS 3516: Computer Networks
Welcome to CS 3516: Computer Networks Prof. Yanhua Li Time: 9:00am 9:50am M, T, R, and F Location: AK 219 Fall 2018 A-term 1 Some slides are originally from the course materials of the textbook Computer
More informationCSC358 Week 4. Adapted from slides by J.F. Kurose and K. W. Ross. All material copyright J.F Kurose and K.W. Ross, All Rights Reserved
CSC358 Week 4 Adapted from slides by J.F. Kurose and K. W. Ross. All material copyright 1996-2016 J.F Kurose and K.W. Ross, All Rights Reserved Logistics Assignment 1 due this Friday Office hour on Feb
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer Reti degli Elaboratori Canale AL Prof.ssa Chiara Petrioli a.a. 2013/2014 We thank for the support material Prof. Kurose-Ross All material copyright 1996-2012 J.F Kurose and K.W.
More informationCSCE 463/612 Networks and Distributed Processing Spring 2018
CSCE 463/612 Networks and Distributed Processing Spring 2018 Transport Layer II Dmitri Loguinov Texas A&M University February 27, 2018 Original slides copyright 1996-2004 J.F Kurose and K.W. Ross 1 Chapter
More informationCS 655 System and Network Architectures and Implementation. Module 3 - Transport
CS 655 System and Network Architectures and Implementation Module 3 - Transport Martin Karsten mkarsten@uwaterloo.ca 3-1 Notice Some slides and elements of slides are taken from third-party slide sets.
More informationChapter 3 outline. Chapter 3: Transport Layer. Transport vs. network layer. Transport services and protocols. Internet transport-layer protocols
Chapter 3: Transport Layer our goals: understand principles behind transport layer : multiplexing, demultiplexing congestion control learn about Internet transport layer protocols: UDP: connectionless
More informationLecture 11: Transport Layer Reliable Data Transfer and TCP
Lecture 11: Transport Layer Reliable Data Transfer and TCP COMP 332, Spring 2018 Victoria Manfredi Acknowledgements: materials adapted from Computer Networking: A Top Down Approach 7 th edition: 1996-2016,
More informationComputer Networks & Security 2016/2017
Computer Networks & Security 2016/2017 Transport Layer (04) Dr. Tanir Ozcelebi Courtesy: Kurose & Ross Courtesy: Forouzan TU/e Computer Science Security and Embedded Networked Systems Transport Layer Our
More informationDistributed Systems. 5. Transport Protocols
Distributed Systems 5. Transport Protocols Werner Nutt 1 5. Transport Protocols 5.1 Transport-layer Services 5.1 Transport-layer Services 5.2 Multiplexing and Demultiplexing 5.3 Connectionless Transport:
More informationLast time. Mobility in Cellular networks. Transport Layer. HLR, VLR, MSC Handoff. Introduction Multiplexing / demultiplexing UDP 14-1
Last time Mobility in Cellular networks HLR, VLR, MSC Handoff Transport Layer Introduction Multiplexing / demultiplexing UDP 14-1 This time Reliable Data Transfer Midterm review 14-2 Chapter 3 outline
More informationDistributed Systems. 5. Transport Protocols. Werner Nutt
Distributed Systems 5. Transport Protocols Werner Nutt 1 5. Transport Protocols 5.1 Transport-layer Services 5.1 Transport-layer Services 5.2 Multiplexing and Demultiplexing 5.3 Connectionless Transport:
More informationLecture 5. Transport Layer. Transport Layer 1-1
Lecture 5 Transport Layer Transport Layer 1-1 Agenda The Transport Layer (TL) Introduction to TL Protocols and Services Connectionless and Connection-oriented Processes in TL Unreliable Data Transfer User
More informationChapter 3: Transport Layer Part A
Chapter 3: Transport Layer Part A Course on Computer Communication and Networks, CTH/GU The slides are adaptation of the slides made available by the authors of the course s main textbook 3: Transport
More informationCSCE 463/612 Networks and Distributed Processing Spring 2018
CSCE 463/612 Networks and Distributed Processing Spring 2018 Transport Layer III Dmitri Loguinov Texas A&M University March 6, 2018 Original slides copyright 1996-2004 J.F Kurose and K.W. Ross 1 Chapter
More informationCSE 461: Introduction to Computer Communication Networks. Chunjong Park
CSE 461: Introduction to Computer Communication Networks Chunjong Park Reliable Data Transfer A sends a packet to B Ideally, the packet should arrive at B But A does not know whether B receives it How
More informationCourse on Computer Communication and Networks. Lecture 4 Chapter 3; Transport Layer, Part A
Course on Computer Communication and Networks Lecture 4 Chapter 3; Transport Layer, Part A EDA344/DIT 423, CTH/GU Based on the book Computer Networking: A Top Down Approach, Jim Kurose, Keith Ross, Addison-Wesley.
More informationCourse on Computer Communication and Networks. Lecture 4 Chapter 3; Transport Layer, Part A
Course on Computer Communication and Networks Lecture 4 Chapter 3; Transport Layer, Part A EDA344/DIT 420, CTH/GU Based on the book Computer Networking: A Top Down Approach, Jim Kurose, Keith Ross, Addison-Wesley.
More informationThe Transport Layer Multiplexing, Error Detection, & UDP
CPSC 852 Internetworking The Transport Layer Multiplexing, Error Detection, & UDP Michele Weigle Department of Computer Science Clemson University mweigle@cs.clemson.edu http://www.cs.clemson.edu/~mweigle/courses/cpsc852
More informationReliable Transport : Fundamentals of Computer Networks Bill Nace
Reliable Transport 14-740: Fundamentals of Computer Networks Bill Nace Material from Computer Networking: A Top Down Approach, 6 th edition. J.F. Kurose and K.W. Ross Administration Stuff is due HW #1
More informationLecture 3 The Transport Control Protocol (TCP) Antonio Cianfrani DIET Department Networking Group netlab.uniroma1.it
Lecture 3 The Transport Control Protocol (TCP) Antonio Cianfrani DIET Department Networking Group netlab.uniroma1.it TCP segment structure URG: urgent data (generally not used) ACK: ACK # valid PSH: push
More informationTransport Layer. CMPS 4750/6750: Computer Networks
Transport Layer CMPS 4750/6750: Computer Networks 1 Outline Overview of transport-layer services Connectionless Transport: UDP Principles of reliable data transfer Connection-Oriented Transport: TCP TCP
More informationChapter 3: 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 Internet transport
More informationChapter 3: 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 Internet transport
More informationCSCD 330 Network Programming
CSCD 330 Network Programming Lecture 9 Transport Layer Spring 2018 Reading: Begin Chapter 3 Some Material in these slides from J.F Kurose and K.W. Ross All material copyright 1996-2007 1 Outline Overview
More informationThe Transport Layer Reliability
The Transport Layer Reliability CS 3, Lecture 7 http://www.cs.rutgers.edu/~sn4/3-s9 Srinivas Narayana (slides heavily adapted from text authors material) Quick recap: Transport Provide logical communication
More informationCOMP211 Chapter 3 Transport Layer
COMP211 Chapter 3 Transport Layer All material copyright 1996-2016 J.F Kurose and K.W. Ross, All Rights Reserved Computer Networking: A Top Down Approach 7 th edition Jim Kurose, Keith Ross Pearson/Addison
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer All material copyright 1996-2009 J.F Kurose and K.W. Ross, All Rights Reserved Computer Networking: A Top Down Approach 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April
More informationComputer Networking: A Top Down Approach
Computer Networking: A Top Down Approach Seventh Edition Chapter 3 Transport Layer Slides in this presentation contain hyperlinks. JAWS users should be able to get a list of links by using INSERT+F7 Transport
More informationCS/ECE 438: Communication Networks Fall Transport Layer
CS/ECE 438: Communication Networks Fall 2017 3. Transport Layer Chapter 3: Transport Layer application transport network link physical 2 Chapter 3: Transport Layer our goals: understand principles behind
More informationReliable Data Transfer
Reliable Data Transfer Kai Shen Reliable Data Transfer What is reliable data transfer? guaranteed arrival no error in order delivery Why is it difficult? unreliable underlying communication channel, which
More information3.4 Principles of Reliable Data Transfer
204 CHAPTER 3 TRANSPORT LAYER provides error checking, it does not do anything to recover from an error. Some implementations of UDP simply discard the damaged segment; others pass the damaged segment
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these ppt slides: The notes used in this course are substantially based on powerpoint slides developed and copyrighted by J.F. Kurose and K.W. Ross, 1996-2007
More informationTransport Layer. Chapter 3. Computer Networking: A Top Down Approach
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationSliding Window Protocols, Connection Management, and TCP Reliability
1 Sliding Window Protocols, Connection Management, and TCP Reliability 2 Outline Review Sliding window protocols Go-back-n Selective repeat Connection management for reliability TCP reliability Overview
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer Computer Networking: A Top Down Approach 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009. Transport Layer 3-1 Chapter 3: Transport Layer Our goals: understand
More informationPrinciples of Reliable Data Transfer
Principles of Reliable Data Transfer 1 Reliable Delivery Making sure that the packets sent by the sender are correctly and reliably received by the receiver amid network errors, i.e., corrupted/lost packets
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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
More informationChapter 3: Transport Layer. Computer Networks. Transport Layer. Transport services and protocols. Chapter 3 outline. Bu-Ali Sina University, Hamedan
Computer Networks Transport Layer By: Mohammad Nassiri Chapter 3: Transport Layer Our goals:!! understand principles behind transport layer services: "! multiplexing/ demultiplexing "! reliable data transfer
More informationChapter 3: 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 Internet transport
More informationArchitettura di Reti
Università di Ferrara Architettura di Reti Chapter 3: Transport Layer Carlo Giannelli carlo.giannelli@unife.it http://www.unife.it/scienze/informatica/insegnamenti/architettura-reti/ http://docente.unife.it/carlo.giannelli
More informationComputer Networks. Transport Layer
Computer Networks Transport Layer By: Mohammad Nassiri Bu-Ali Sina University, Hamedan Fall 2009 Chapter 3: Transport Layer Our goals:!! understand principles behind transport layer services: "! multiplexing/
More informationComputer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ
Computer Networks 1 (Mạng Máy Tính 1) Lectured by: Dr. Phạm Trần Vũ Chapter 3 Transport Layer Computer Networking: A Top Down Approach, 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009.
More informationChapter 3: Transport Layer. Chapter 3 Transport Layer. Chapter 3 outline. Transport services and protocols
Chapter 3 Transport Layer Computer Networking: A Top Down Approach 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009. Chapter 3: Transport Layer Our goals: understand principles behind transport
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationComputer Networking. Reliable Transport. Reliable Transport. Principles of reliable data transfer. Reliable data transfer. Elements of Procedure
Computer Networking Reliable Transport Prof. Andrzej Duda duda@imag.fr Reliable Transport Reliable data transfer Data are received ordered and error-free Elements of procedure usually means the set of
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We re making these slides freely available to all (faculty, students, readers). They re in PowerPoint form so you see the animations;
More informationChapter 3 Transport Layer
CSF531 Advanced Computer Networks 高等電腦網路 Chapter 3 Transport Layer 吳俊興 國立高雄大學資訊工程學系 Chapter 3 outline 3.1 Transport-layer services 3.2 Multiplexing and demultiplexing 3.3 Connectionless transport: UDP
More informationChapter 3: Transport Layer. Chapter 3 Transport Layer. Chapter 3 outline. Transport services and protocols
Chapter 3 Transport Layer Computer Networking: A Top Down Approach 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009. Chapter 3: Transport Layer Our goals: understand principles behind transport
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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
More informationChapter 3 Transport Layer
CSB051 Computer Networks 電腦網路 Chapter 3 Transport Layer 吳俊興國立高雄大學資訊工程學系 Reference: Computer Networking: A Top Down Approach, 7th Global Edition, Jim Kurose, Keith Ross, Pearson Chapter 3 outline 3.1 transport-layer
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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 see the animations; and
More informationEC441 Fall 2018 Introduction to Computer Networking Chapter 3: Transport Layer
EC441 Fall 2018 Introduction to Computer Networking Chapter 3: Transport Layer This presentation is adapted from slides produced by Jim Kurose and Keith Ross for their book, Computer Networking: A Top
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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
More informationChapter 3: Transport Layer
Chapter 3 Transport Layer 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
More informationLECTURE 3 - TRANSPORT LAYER
LECTURE 3 - TRANSPORT LAYER 1 GOALS (1) Understand principles behind transport layer services: multiplexing, demultiplexing reliable data transfer ow control congestion control GOALS (2) Learn about Internet
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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 see the animations; and
More informationTransport services and protocols. Chapter 3 Transport Layer. Chapter 3: Transport Layer. Transport vs. network layer
Chapter 3 Transport Layer 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
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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 see the animations; and
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer All material copyright 1996-2013 J.F Kurose and K.W. Ross, All Rights Reserved Transport Layer 3-1 Chapter 3: Transport Layer our goals: understand principles behind transport
More informationChapter 3 Transport Layer. Chapter 3: Transport Layer. Chapter 3 outline. Our goals: understand principles behind transport layer services:
Chapter 3 Transport Layer 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
More informationChapter 3: Transport Layer
Chapter 3 Transport Layer 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 see the animations; and
More informationAnnouncement. Homework 1 due last night, how is that? Will discuss some problems in the lecture next week
Announcement Homework 1 due last night, how is that? Will discuss some problems in the lecture next week Should have completed at least part II of project 1 Homework 2 will be out next week Review of Previous
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 Modified form the following All material copyright 1996-2012 J.F Kurose
More informationChapter 3. Transport Layer. Computer Networking: A Top Down Approach 5th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009.
Chapter 3 Transport Layer Computer Networking: A Top Down Approach 5th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009. All material copyright 1996-2009 J.F Kurose and K.W. Ross, All Rights
More informationChapter 3: Transport Layer
Chapter 3: Transport Layer our goals: understand principles behind transport layer services: multiplexing, demultiplexing reliable data transfer fow control congestion control learn about Internet transport
More informationCSCI Computer Networks Spring 2017
source: computer-networks-webdesign.com CSCI 6760 - Computer Networks Spring 2017 Instructor: Prof. Roberto Perdisci perdisci@cs.uga.edu These slides are adapted from the textbook slides by J.F. Kurose
More informationCSCI Computer Networks Fall 2016
source: computer-networks-webdesign.com CSCI 4760 - Computer Networks Fall 2016 Instructor: Prof. Roberto Perdisci perdisci@cs.uga.edu These slides are adapted from the textbook slides by J.F. Kurose and
More informationChapter 3 Transport Layer. Chapter 3: Transport Layer. Chapter 3 outline
Chapter 3 Transport Layer 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
More informationChapter 3: Transport Layer. Chapter 3 Transport Layer. Chapter 3 outline. Transport services and protocols
Chapter 3 Transport Layer 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
More informationChapter 3 Transport Layer
Chapter 3 Transport Layer 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 see the animations; and
More information