TSIN02 - Internetworking
|
|
- Elijah Andrews
- 5 years ago
- Views:
Transcription
1 Lecture 4: Transport Layer Literature: Forouzan: ch Image Coding Group, Linköpings Universitet
2 Lecture 4: Outline Transport layer responsibilities UDP TCP 2
3 Transport layer in OSI model Figure from Forouzan 3
4 Lower layer responsibilities The physical layer transmits signals representing individual bits on a channel The link layer provides reliable link communication through framing, physical addressing, flow- error- and access control The network layer provides end to end delivery of individual packets through logical addressing and routing support 4
5 End to end delivery of a packet Figure from Forouzan 5
6 The Transport Layer The transport layer is responsible for end to end delivery of messages. This is achieved through Service point addressing Segmentation and reassembly Connection control Flow control Congestion control Error control 6
7 End to end delivery of a message Figure from Forouzan 7
8 Addressing - Protocol Ports Port numbers are used as a process identifier. They are needed since computers can run multiple programs at the same time. IP addresses identify computers Port numbers identify processes An (IP address, port number) pair is called a socket. Messages must define source and destination sockets 8
9 Addresses and Ports Figure from Forouzan 9
10 Port Numbers Figure from Forouzan 10
11 Port Numbers The IANA has divided the port numbers into three ranges: Well known ports (0-1023) Assigned and controlled by IANA Registered ports ( ) Ports in this range can be registered with IANA to prevent duplication. Dynamic ports ( ) The ephemeral ports can be used by any process. 11
12 Some Well Known Ports Port number Application 20,21 FTP 22 SSH 23 Telnet 25 SMTP 53 DNS 80 HTTP 110 POP3 143 IMAP4 443 HTTPS 993 IMAP4/SSL 995 POP3/SSL 12
13 Transport layer protocols There are two transport layer protocols in the TCP/IP stack: UDP - User Datagram Protocol Connectionless unreliable service TCP - Transmission Control Protocol Connection-oriented reliable stream service TCP UDP IGMP ICMP IP ARP RARP Underlying networks 13
14 User Datagram Protocol UDP is a connectionless, unreliable transport protocol UDP provides process to process communication limited error checking UDP does not provide acknowledgment for received packets segmentation and reassembly flow control congestion control 14
15 User Datagram Protocol Why use UDP? 15
16 User Datagram Protocol UDP is suitable for processes that provide internal flow and error control mechanisms, eg TFTP multicasting and broadcasting management processes, eg SNMP some route updating protocols, eg RIP processes that only send short messages 16
17 User Datagram UDP packets (datagrams): 8 byte header max bytes of data (=IP length IP header UDP header) Figure from Forouzan 17
18 UDP Checksum The UDP checksum includes pseudo-header UDP header data from the application layer pad byte (if needed) 8 bits 8 bits Protocol All 0s (17) Source port address Source IP address... 8 bits 8 bits Destination IP address UDP total length Data UDP total length Destination port address UDP Checksum 18
19 Checksum example Figure from Forouzan 19
20 UDP Operation Messages are encapsulated in UDP datagrams Usually each port is associated with one or two queues UDP handles multiplexing and demultiplexing of messages. 20
21 Encapsulation Figure from Forouzan 21
22 Incoming and outgoing queues Figure from Forouzan 22
23 Multiplexing Figure from Forouzan 23
24 UDP Package Figure from Forouzan 24
25 Transmission Control Protocol TCP is a connection-oriented transport protocol TCP provides full duplex connections reliable stream service flow control congestion control error control 25
26 Position of TCP in TCP/IP stack 26
27 Stream Delivery of TCP 27
28 Buffers Sending and receiving buffers are used for storage. This makes it possible to handle differences in speed between the sending and receiving processes. Buffers are also used in flow, congestion and error control mechanisms. 28
29 Buffers Figure from Forouzan 29
30 TCP Segments Figure from Forouzan 30
31 Reliable Service TCP provides reliable service by breaking application data into suitably sized blocks called segments using an acknowledgment mechanism retransmission when errors occur providing flow and congestion control checksum control of header and data 31
32 TCP Segment Figure from Forouzan 32
33 Sequence number All bytes transmitted in a connection are numbered, starting from a random position 32 bits are used for numbering The value in the header is the number of the first byte of data contained in the segment. 33
34 Acknowledgement number This number is used to announce the sequence number of the next expected segment and thus acknowledging that all prior segments (with lower sequence numbers) have been received. 34
35 TCP Flags 6 flags can be used to determine the purpose of the segment (more than one can be set) URG - urgent pointer valid (set when sender wants the receiver to read a piece of data urgently and possibly out of order) ACK - acknowledgment number valid PSH - push data, receiver should immediately pass the data to the application (buffers should be emptied!) RST - reset the connection SYN - synchronize sequence numbers to initiate connection FIN - terminate the connection 35
36 TCP Handshake A three-way handshake is used to establish a connection Negotiation on initial sequence numbers Initial segment number (ISN) chosen so that each active connection has its own ISN Normally initiation is made by the client Figure from Forouzan 36
37 Connection Termination 4 segments needed to close a connection Figure from Forouzan 37
38 Maximum Segment Size MSS is the largest block of data TCP will send to the other side. MSS can be announced in the options field during connection establishment. Default MSS is 536 The larger the better (until fragmentation occurs) 38
39 TCP Options Up to 40 bytes of optional information can be included in the TCP header Used to convey additional information or to align other options Figure from Forouzan 39
40 Flow Control How much can a source send without receiving an ACK? The sliding window protocol is used in TCP offered window usable window A sliding window is used to make transmission more efficient as well as to control the flow of data so that the destination does not become overwhelmed with data. TCP s sliding windows are byte oriented. 40
41 Senders window Figure from Forouzan 41
42 Sliding window 42
43 Silly window syndrome Sender sends 1-byte segments because the application produces data slowly. Solution - Nagle's algorithm After sending one segment, wait until either an ACK is received or a full window can be transmitted. 1-byte windows are announced by the receiver because the application consumes data slowly. Solution - Clark's Send ACKs as soon as possible, but announce zero window size until a maximum size segment fits the buffer Solution - delayed ACK Wait with acknowledgments until there is room in the buffer 43
44 In TCP, the sender window size is totally controlled by the receiver window value. However, the actual window size can be smaller if there is congestion in the network. 44
45 Some Points about Sliding Windows The source does not have to send a full window's worth of data. The size of the window can be increased or decreased by the destination The destination can send an acknowledgment at any time. 45
46 Error control Figure from Forouzan 46
47 Lost Segment Figure from Forouzan 47
48 Lost Acknowledgement Figure from Forouzan 48
49 Congestion Control TCP assumes that the cause of a lost segment is due to congestion in the network. If the cause of the lost segment is congestion, retransmission of the segment will not help, it will make things worse. 49
50 Congestion Control Handles bottlenecks in the network Without congestion control the network will collapse! Solution: Congestion window (CWND) slow start Additive increase of CWND Multiplicative decrease of CWND Fast retransmit and Fast recovery 50
51 Congestion window size Figure from Forouzan 51
52 TCP Timers Retransmission timer how long should sender wait for an ACK? Persistence timer how long should sender wait if window size = 0? Keep-alive timer Prevents connections to live forever Time-Waited timer Each connection held in limbo before actually closed 52
53 State transistions Figure from Forouzan 53
54 TCP packet Figure from Forouzan 54
55 Summary Transport layer basics UDP - a fairly simple connectionless protocol TCP - a very complex protocol Reliability Connection management Flow control Congestion avoidance Timers 55
TSIN02 - Internetworking
TSIN02 - Internetworking Literature: Lecture 4: Transport Layer Forouzan: ch 11-12 Transport layer responsibilities UDP TCP 2004 Image Coding Group, Linköpings Universitet 2 Transport layer in OSI model
More informationTSIN02 - Internetworking
Lecture 4: Transport Layer Literature: Forouzan: ch 11-12 2004 Image Coding Group, Linköpings Universitet Lecture 4: Outline Transport layer responsibilities UDP TCP 2 Transport layer in OSI model Figure
More informationTSIN02 - Internetworking
Lecture 4: Outline Literature: Lecture 4: Transport Layer Forouzan: ch 11-12 RFC? Transport layer introduction UDP TCP 2004 Image Coding Group, Linköpings Universitet 2 The Transport Layer Transport layer
More informationTransport Layer. Gursharan Singh Tatla. Upendra Sharma. 1
Transport Layer Gursharan Singh Tatla mailme@gursharansingh.in Upendra Sharma 1 Introduction The transport layer is the fourth layer from the bottom in the OSI reference model. It is responsible for message
More informationOSI Transport Layer. objectives
LECTURE 5 OSI Transport Layer objectives 1. Roles of the Transport Layer 1. segmentation of data 2. error detection 3. Multiplexing of upper layer application using port numbers 2. The TCP protocol Communicating
More informationNetworking Technologies and Applications
Networking Technologies and Applications Rolland Vida BME TMIT Transport Protocols UDP User Datagram Protocol TCP Transport Control Protocol and many others UDP One of the core transport protocols Used
More informationTransport Layer. <protocol, local-addr,local-port,foreign-addr,foreign-port> ϒ Client uses ephemeral ports /10 Joseph Cordina 2005
Transport Layer For a connection on a host (single IP address), there exist many entry points through which there may be many-to-many connections. These are called ports. A port is a 16-bit number used
More information05 Transmission Control Protocol (TCP)
SE 4C03 Winter 2003 05 Transmission Control Protocol (TCP) Instructor: W. M. Farmer Revised: 06 February 2003 1 Interprocess Communication Problem: How can a process on one host access a service provided
More informationGuide To TCP/IP, Second Edition UDP Header Source Port Number (16 bits) IP HEADER Protocol Field = 17 Destination Port Number (16 bit) 15 16
Guide To TCP/IP, Second Edition Chapter 5 Transport Layer TCP/IP Protocols Objectives Understand the key features and functions of the User Datagram Protocol (UDP) Explain the mechanisms that drive segmentation,
More informationCCNA Exploration Network Fundamentals. Chapter 04 OSI Transport Layer
CCNA Exploration Network Fundamentals Chapter 04 OSI Transport Layer Updated: 05/05/2008 1 4.1 Roles of the Transport Layer 2 4.1 Roles of the Transport Layer The OSI Transport layer accept data from the
More informationLecture 3: The Transport Layer: UDP and TCP
Lecture 3: The Transport Layer: UDP and TCP Prof. Shervin Shirmohammadi SITE, University of Ottawa Prof. Shervin Shirmohammadi CEG 4395 3-1 The Transport Layer Provides efficient and robust end-to-end
More informationCCNA R&S: Introduction to Networks. Chapter 7: The Transport Layer
CCNA R&S: Introduction to Networks Chapter 7: The Transport Layer Frank Schneemann 7.0.1.1 Introduction 7.0.1.2 Class Activity - We Need to Talk Game 7.1.1.1 Role of the Transport Layer The primary responsibilities
More informationTCP /IP Fundamentals Mr. Cantu
TCP /IP Fundamentals Mr. Cantu OSI Model and TCP/IP Model Comparison TCP / IP Protocols (Application Layer) The TCP/IP subprotocols listed in this layer are services that support a number of network functions:
More informationIS370 Data Communications and Computer Networks. Chapter 5 : Transport Layer
IS370 Data Communications and Computer Networks Chapter 5 : Transport Layer Instructor : Mr Mourad Benchikh Introduction Transport layer is responsible on process-to-process delivery of the entire message.
More informationUnit 2.
Unit 2 Unit 2 Topics Covered: 1. PROCESS-TO-PROCESS DELIVERY 1. Client-Server 2. Addressing 2. IANA Ranges 3. Socket Addresses 4. Multiplexing and Demultiplexing 5. Connectionless Versus Connection-Oriented
More informationChapter 23 Process-to-Process Delivery: UDP, TCP, and SCTP 23.1
Chapter 23 Process-to-Process Delivery: UDP, TCP, and SCTP 23.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 23-1 PROCESS-TO-PROCESS DELIVERY 23.2 The transport
More informationLayer 4: UDP, TCP, and others. based on Chapter 9 of CompTIA Network+ Exam Guide, 4th ed., Mike Meyers
Layer 4: UDP, TCP, and others based on Chapter 9 of CompTIA Network+ Exam Guide, 4th ed., Mike Meyers Concepts application set transport set High-level, "Application Set" protocols deal only with how handled
More informationTransport Protocols. Raj Jain. Washington University in St. Louis
Transport Protocols Raj Jain Washington University Saint Louis, MO 63131 Jain@cse.wustl.edu These slides are available on-line at: http://www.cse.wustl.edu/~jain/cse473-05/ 16-1 Overview q TCP q Key features
More informationTRANSMISSION CONTROL PROTOCOL. ETI 2506 TELECOMMUNICATION SYSTEMS Monday, 7 November 2016
TRANSMISSION CONTROL PROTOCOL ETI 2506 TELECOMMUNICATION SYSTEMS Monday, 7 November 2016 ETI 2506 - TELECOMMUNICATION SYLLABUS Principles of Telecom (IP Telephony and IP TV) - Key Issues to remember 1.
More informationTransport Layer. Application / Transport Interface. Transport Layer Services. Transport Layer Connections
Application / Transport Interface Application requests service from transport layer Transport Layer Application Layer Prepare Transport service requirements Data for transport Local endpoint node address
More informationChapter 2 - Part 1. The TCP/IP Protocol: The Language of the Internet
Chapter 2 - Part 1 The TCP/IP Protocol: The Language of the Internet Protocols A protocol is a language or set of rules that two or more computers use to communicate 2 Protocol Analogy: Phone Call Parties
More informationUDP and TCP. Introduction. So far we have studied some data link layer protocols such as PPP which are responsible for getting data
ELEX 4550 : Wide Area Networks 2015 Winter Session UDP and TCP is lecture describes the two most common transport-layer protocols used by IP networks: the User Datagram Protocol (UDP) and the Transmission
More informationTransport Layer. The transport layer is responsible for the delivery of a message from one process to another. RSManiaol
Transport Layer Transport Layer The transport layer is responsible for the delivery of a message from one process to another Types of Data Deliveries Client/Server Paradigm An application program on the
More informationTransport Layer. -UDP (User Datagram Protocol) -TCP (Transport Control Protocol)
Transport Layer -UDP (User Datagram Protocol) -TCP (Transport Control Protocol) 1 Transport Services The transport layer has the duty to set up logical connections between two applications running on remote
More informationChapter 24. Transport-Layer Protocols
Chapter 24. Transport-Layer Protocols 23.1 Introduction 23.2 User Datagram Protocol 23.3 Transmission Control Protocol 23.4 SCTP Computer Networks 24-1 Position of Transport-Layer Protocols UDP is an unreliable
More informationTransport Over IP. CSCI 690 Michael Hutt New York Institute of Technology
Transport Over IP CSCI 690 Michael Hutt New York Institute of Technology Transport Over IP What is a transport protocol? Choosing to use a transport protocol Ports and Addresses Datagrams UDP What is a
More informationIntroduction to TCP/IP networking
Introduction to TCP/IP networking TCP/IP protocol family IP : Internet Protocol UDP : User Datagram Protocol RTP, traceroute TCP : Transmission Control Protocol HTTP, FTP, ssh What is an internet? A set
More informationHands-On Ethical Hacking and Network Defense
Hands-On Ethical Hacking and Network Defense Chapter 2 TCP/IP Concepts Review Last modified 1-11-17 Objectives Describe the TCP/IP protocol stack Explain the basic concepts of IP addressing Explain the
More informationECE 650 Systems Programming & Engineering. Spring 2018
ECE 650 Systems Programming & Engineering Spring 2018 Networking Transport Layer Tyler Bletsch Duke University Slides are adapted from Brian Rogers (Duke) TCP/IP Model 2 Transport Layer Problem solved:
More informationUDP, TCP, IP multicast
UDP, TCP, IP multicast Dan Williams In this lecture UDP (user datagram protocol) Unreliable, packet-based TCP (transmission control protocol) Reliable, connection oriented, stream-based IP multicast Process-to-Process
More informationQUIZ: Longest Matching Prefix
QUIZ: Longest Matching Prefix A router has the following routing table: 10.50.42.0 /24 Send out on interface Z 10.50.20.0 /24 Send out on interface A 10.50.24.0 /22 Send out on interface B 10.50.20.0 /22
More informationCSCI-GA Operating Systems. Networking. Hubertus Franke
CSCI-GA.2250-001 Operating Systems Networking Hubertus Franke frankeh@cs.nyu.edu Source: Ganesh Sittampalam NYU TCP/IP protocol family IP : Internet Protocol UDP : User Datagram Protocol RTP, traceroute
More informationICMP. Outline ICMP. ICMP oicmp is provided within IP which generates error. Internet Control Message Protocol. Ping Traceroute
Outline ICMP Internet Control Message Protocol oicmp Basic o ICMP Packet oicmp Types & Code Ping Traceroute 2 3 ICMP oicmp is provided within IP which generates error messages to help the IP layers (best
More information4.0.1 CHAPTER INTRODUCTION
4.0.1 CHAPTER INTRODUCTION Data networks and the Internet support the human network by supplying seamless, reliable communication between people - both locally and around the globe. On a single device,
More informationTCP/IP. Chapter 5: Transport Layer TCP/IP Protocols
TCP/IP Chapter 5: Transport Layer TCP/IP Protocols 1 Objectives Understand the key features and functions of the User Datagram Protocol Explain the mechanisms that drive segmentation, reassembly, and retransmission
More informationUser Datagram Protocol (UDP):
SFWR 4C03: Computer Networks and Computer Security Feb 2-5 2004 Lecturer: Kartik Krishnan Lectures 13-15 User Datagram Protocol (UDP): UDP is a connectionless transport layer protocol: each output operation
More informationCCNA 1 Chapter 7 v5.0 Exam Answers 2013
CCNA 1 Chapter 7 v5.0 Exam Answers 2013 1 A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the
More informationTCP/IP Networking. Part 4: Network and Transport Layer Protocols
TCP/IP Networking Part 4: Network and Transport Layer Protocols Orientation Application Application protocol Application TCP TCP protocol TCP IP IP protocol IP IP protocol IP IP protocol IP Network Access
More information6.1 Internet Transport Layer Architecture 6.2 UDP (User Datagram Protocol) 6.3 TCP (Transmission Control Protocol) 6. Transport Layer 6-1
6. Transport Layer 6.1 Internet Transport Layer Architecture 6.2 UDP (User Datagram Protocol) 6.3 TCP (Transmission Control Protocol) 6. Transport Layer 6-1 6.1 Internet Transport Layer Architecture The
More informationApplication. Transport. Network. Link. Physical
Transport Layer ELEC1200 Principles behind transport layer services Multiplexing and demultiplexing UDP TCP Reliable Data Transfer TCP Congestion Control TCP Fairness *The slides are adapted from ppt slides
More informationTransport Layer Protocols. Internet Transport Layer. Agenda. TCP Fundamentals
Transport Layer Protocols Application SMTP HTTP FTP Telnet DNS BootP DHCP ( M I M E ) Presentation Session SNMP TFTP Internet Transport Layer TCP Fundamentals, TCP Performance Aspects, UDP (User Datagram
More informationCCNA 1 v3.11 Module 11 TCP/IP Transport and Application Layers
CCNA 1 v3.11 Module 11 TCP/IP Transport and Application Layers 2007, Jae-sul Lee. All rights reserved. 1 Agenda 11.1 TCP/IP Transport Layer 11.2 The Application Layer What does the TCP/IP transport layer
More informationTransport layer. UDP: User Datagram Protocol [RFC 768] Review principles: Instantiation in the Internet UDP TCP
Transport layer Review principles: Reliable data transfer Flow control Congestion control Instantiation in the Internet UDP TCP 1 UDP: User Datagram Protocol [RFC 768] No frills, bare bones Internet transport
More informationTransport layer. Review principles: Instantiation in the Internet UDP TCP. Reliable data transfer Flow control Congestion control
Transport layer Review principles: Reliable data transfer Flow control Congestion control Instantiation in the Internet UDP TCP 1 UDP: User Datagram Protocol [RFC 768] No frills, bare bones Internet transport
More informationUNIT V. Computer Networks [10MCA32] 1
Computer Networks [10MCA32] 1 UNIT V 1. Explain the format of UDP header and UDP message queue. The User Datagram Protocol (UDP) is a end-to-end transport protocol. The issue in UDP is to identify the
More informationNT1210 Introduction to Networking. Unit 10
NT1210 Introduction to Networking Unit 10 Chapter 10, TCP/IP Transport Objectives Identify the major needs and stakeholders for computer networks and network applications. Compare and contrast the OSI
More information6. The Transport Layer and protocols
6. The Transport Layer and protocols 1 Dr.Z.Sun Outline Transport layer services Transmission Control Protocol Connection set-up and tear-down Ports and Well-know-ports Flow control and Congestion control
More informationECE4110 Internetwork Programming. Introduction and Overview
ECE4110 Internetwork Programming Introduction and Overview 1 EXAMPLE GENERAL NETWORK ALGORITHM Listen to wire Are signals detected Detect a preamble Yes Read Destination Address No data carrying or noise?
More informationEEC-682/782 Computer Networks I
EEC-682/782 Computer Networks I Lecture 16 Wenbing Zhao w.zhao1@csuohio.edu http://academic.csuohio.edu/zhao_w/teaching/eec682.htm (Lecture nodes are based on materials supplied by Dr. Louise Moser at
More informationNETWORK PROGRAMMING. Instructor: Junaid Tariq, Lecturer, Department of Computer Science
NETWORK PROGRAMMING CSC- 341 Instructor: Junaid Tariq, Lecturer, Department of Computer Science 6 Lecture CHAPTER 2: THE TRANSPORT LAYER : TCP AND UDP Contents Introduction UDP: User Datagram Protocol
More informationCMPE 80N: Introduction to Networking and the Internet
CMPE 80N: Introduction to Networking and the Internet Katia Obraczka Computer Engineering UCSC Baskin Engineering Lecture 11 CMPE 80N Fall'10 1 Announcements Forum #2 due on 11.05. CMPE 80N Fall'10 2 Last
More informationLesson 5 TCP/IP suite, TCP and UDP Protocols. Chapter-4 L05: "Internet of Things ", Raj Kamal, Publs.: McGraw-Hill Education
Lesson 5 TCP/IP suite, TCP and UDP Protocols 1 TCP/IP Suite: Application layer protocols TCP/IP Suite set of protocols with layers for the Internet TCP/IP communication 5 layers: L7, L4, L3, L2 and L1
More informationUser Datagram Protocol
Topics Transport Layer TCP s three-way handshake TCP s connection termination sequence TCP s TIME_WAIT state TCP and UDP buffering by the socket layer 2 Introduction UDP is a simple, unreliable datagram
More informationThe Transmission Control Protocol (TCP)
The Transmission Control Protocol (TCP) Application Services (Telnet, FTP, e-mail, WWW) Reliable Stream Transport (TCP) Unreliable Transport Service (UDP) Connectionless Packet Delivery Service (IP) Goals
More informationCMSC 417. Computer Networks Prof. Ashok K Agrawala Ashok Agrawala. October 25, 2018
CMSC 417 Computer Networks Prof. Ashok K Agrawala 2018 Ashok Agrawala Message, Segment, Packet, and Frame host host HTTP HTTP message HTTP TCP TCP segment TCP router router IP IP packet IP IP packet IP
More informationLecture 20 Overview. Last Lecture. This Lecture. Next Lecture. Transport Control Protocol (1) Transport Control Protocol (2) Source: chapters 23, 24
Lecture 20 Overview Last Lecture Transport Control Protocol (1) This Lecture Transport Control Protocol (2) Source: chapters 23, 24 Next Lecture Internet Applications Source: chapter 26 COSC244 & TELE202
More informationEITF25 Internet Techniques and Applications L7: Internet. Stefan Höst
EITF25 Internet Techniques and Applications L7: Internet Stefan Höst What is Internet? Internet consists of a number of networks that exchange data according to traffic agreements. All networks in Internet
More informationCSC 634: Networks Programming
CSC 634: Networks Programming Lecture 03: Review of Basic Networking Concepts (TCP/UDP) Instructor: Haidar M. Harmanani Recap 7-Layer OSI Model 7 6 5 4 3 2 1 Application Presentation (kinds of compression)
More informationChapter 5 End-to-End Protocols
Chapter 5 End-to-End Protocols Transport layer turns the host-to-host packet delivery service of the underlying network into a process-to-process communication channel Common properties that application
More informationUNIT IV TRANSPORT LAYER
Transport Layer UNIT IV TRANSPORT LAYER Congestion Control and Quality of Service Ref: Data Communication & Networking, 4 th edition, Forouzan IV-1 DATA TRAFFIC The main focus of congestion control and
More informationEEC-484/584 Computer Networks. Lecture 16. Wenbing Zhao
EEC-484/584 Computer Networks Lecture 16 wenbing@ieee.org (Lecture nodes are based on materials supplied by Dr. Louise Moser at UCSB and Prentice-Hall) Outline 2 Review Services provided by transport layer
More information9th Slide Set Computer Networks
Prof. Dr. Christian Baun 9th Slide Set Computer Networks Frankfurt University of Applied Sciences WS1718 1/49 9th Slide Set Computer Networks Prof. Dr. Christian Baun Frankfurt University of Applied Sciences
More informationECE 435 Network Engineering Lecture 15
ECE 435 Network Engineering Lecture 15 Vince Weaver http://web.eece.maine.edu/~vweaver vincent.weaver@maine.edu 26 October 2016 Announcements HW#5 due HW#6 posted Broadcasts on the MBONE 1 The Transport
More informationTransport Layer (TCP/UDP)
Transport Layer (TCP/UDP) Where we are in the Course Moving on up to the Transport Layer! Application Transport Network Link Physical CSE 461 University of Washington 2 Recall Transport layer provides
More informationLinux Networking: tcp. TCP context and interfaces
Linux Networking: tcp David Morgan TCP context and interfaces Computer A Computer B application process application process data data data data TCP process TCP process a network 1 TCP purposes and features
More informationTransport Layer TCP & UDP Week 7. Module : Computer Networks Lecturers : Lucy White Office : 324
Transport Layer TCP & UDP Week 7 Module : Computer Networks Lecturers : Lucy White lbwhite@wit.ie Office : 324 1 Purpose of the Transport Layer The Transport layer provides for the segmentation of data
More informationCS 716: Introduction to communication networks th class; 7 th Oct Instructor: Sridhar Iyer IIT Bombay
CS 716: Introduction to communication networks - 18 th class; 7 th Oct 2011 Instructor: Sridhar Iyer IIT Bombay Reliable Transport We have already designed a reliable communication protocol for an analogy
More informationInterconnecting Networks with TCP/IP. 2000, Cisco Systems, Inc. 8-1
Interconnecting Networks with TCP/IP 2000, Cisco Systems, Inc. 8-1 Objectives Upon completion of this chapter you will be able to perform the following tasks: Identify the IP protocol stack, its protocol
More informationConcept Questions Demonstrate your knowledge of these concepts by answering the following questions in the space that is provided.
223 Chapter 19 Inter mediate TCP The Transmission Control Protocol/Internet Protocol (TCP/IP) suite of protocols was developed as part of the research that the Defense Advanced Research Projects Agency
More informationDifferent Layers Lecture 21
Different Layers Lecture 21 10/17/2003 Jian Ren 1 The Transport Layer 10/17/2003 Jian Ren 2 Transport Services and Protocols Provide logical communication between app processes running on different hosts
More informationSimulation of TCP Layer
39 Simulation of TCP Layer Preeti Grover, M.Tech, Computer Science, Uttrakhand Technical University, Dehradun ABSTRACT The Transmission Control Protocol (TCP) represents the most deployed transport protocol
More informationCSEN 503 Introduction to Communication Networks. Mervat AbuElkheir Hana Medhat Ayman Dayf. ** Slides are attributed to J. F.
CSEN 503 Introduction to Communication Networks Mervat AbuElkheir Hana Medhat Ayman Dayf ** Slides are attributed to J. F. Kurose Chapter 3 outline Transport-layer services Multiplexing and demultiplexing
More informationNetwork Technology 1 5th - Transport Protocol. Mario Lombardo -
Network Technology 1 5th - Transport Protocol Mario Lombardo - lombardo@informatik.dhbw-stuttgart.de 1 overview Transport Protocol Layer realizes process to process communication data unit is called a
More informationInternet Applications and the Application Layer Material from Kurose and Ross, Chapter 2: The Application Layer
Midterm Study Sheet Below is a list of topics that will be covered on the midterm exam. Some topics may have summaries to clarify the coverage of the topic during the lecture. Disclaimer: the list may
More informationOSI Transport Layer. Network Fundamentals Chapter 4. Version Cisco Systems, Inc. All rights reserved. Cisco Public 1
OSI Transport Layer Network Fundamentals Chapter 4 Version 4.0 1 Transport Layer Role and Services Transport layer is responsible for overall end-to-end transfer of application data 2 Transport Layer Role
More informationUNIT 2 TRANSPORT LAYER
Network, Transport and Application UNIT 2 TRANSPORT LAYER Structure Page No. 2.0 Introduction 34 2.1 Objective 34 2.2 Addressing 35 2.3 Reliable delivery 35 2.4 Flow control 38 2.5 Connection Management
More informationTCP/IP THE TCP/IP ARCHITECTURE
TCP/IP-1 The Internet Protocol (IP) enables communications across a vast and heterogeneous collection of networks that are based on different technologies. Any host computer that is connected to the Internet
More informationChapter 11. User Datagram Protocol (UDP)
Chapter 11 User Datagram Protocol (UDP) Outline Process-to-process communication User datagram Checksum UDP operation Use of UDP UDP package Figure 11-1 Position of UDP in the TCP/IP Protocol Suite The
More informationEE 122: Transport Protocols. Kevin Lai October 16, 2002
EE 122: Transport Protocols Kevin Lai October 16, 2002 Motivation IP provides a weak, but efficient service model (best-effort) - packets can be delayed, dropped, reordered, duplicated - packets have limited
More informationDa t e: August 2 0 th a t 9: :00 SOLUTIONS
Interne t working, Examina tion 2G1 3 0 5 Da t e: August 2 0 th 2 0 0 3 a t 9: 0 0 1 3:00 SOLUTIONS 1. General (5p) a) Place each of the following protocols in the correct TCP/IP layer (Application, Transport,
More informationITS323: Introduction to Data Communications
ITS323: Introduction to Data Communications Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 23 May 2012 ITS323Y12S1L13, Steve/Courses/2012/s1/its323/lectures/transport.tex,
More informationChapter 23 Process-to-Process Delivery: UDP, TCP, and SCTP
Chapter 23 Process-to-Process Delivery: UDP, TCP, and SCTP 23.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 23-1 PROCESS-TO-PROCESS DELIVERY The transport
More informationIntroduction to Networking. Operating Systems In Depth XXVII 1 Copyright 2017 Thomas W. Doeppner. All rights reserved.
Introduction to Networking Operating Systems In Depth XXVII 1 Copyright 2017 Thomas W. Doeppner. All rights reserved. Distributed File Systems Operating Systems In Depth XXVII 2 Copyright 2017 Thomas W.
More informationInternet and Intranet Protocols and Applications
Internet and Intranet Protocols and Applications Lecture 1b: The Transport Layer in the Internet January 17, 2006 Arthur Goldberg Computer Science Department New York University artg@cs.nyu.edu 01/17/06
More informationTCP = Transmission Control Protocol Connection-oriented protocol Provides a reliable unicast end-to-end byte stream over an unreliable internetwork.
Overview Formats, Data Transfer, etc. Connection Management (modified by Malathi Veeraraghavan) 1 Overview TCP = Transmission Control Protocol Connection-oriented protocol Provides a reliable unicast end-to-end
More informationChapter 6. What happens at the Transport Layer? Services provided Transport protocols UDP TCP Flow control Congestion control
Chapter 6 What happens at the Transport Layer? Services provided Transport protocols UDP TCP Flow control Congestion control OSI Model Hybrid Model Software outside the operating system Software inside
More informationEE 610 Part 2: Encapsulation and network utilities
EE 610 Part 2: Encapsulation and network utilities Objective: After this experiment, the students should be able to: i. Understand the format of standard frames and packet headers. Overview: The Open Systems
More informationComputer Communication Networks Midterm Review
Computer Communication Networks Midterm Review ICEN/ICSI 416 Fall 2018 Prof. Aveek Dutta 1 Instructions The exam is closed book, notes, computers, phones. You can use calculator, but not one from your
More informationConnection-oriented (virtual circuit) Reliable Transfer Buffered Transfer Unstructured Stream Full Duplex Point-to-point Connection End-to-end service
최양희서울대학교컴퓨터공학부 Connection-oriented (virtual circuit) Reliable Transfer Buffered Transfer Unstructured Stream Full Duplex Point-to-point Connection End-to-end service 1 2004 Yanghee Choi 2 Addressing: application
More informationSuprakash Datta. Office: CSEB 3043 Phone: ext Course page:
CSE 3214: Computer Networks Protocols and Applications Suprakash Datta datta@cse.yorku.ca Office: CSEB 3043 Phone: 416-736-2100 ext 77875 Course page: http://www.cse.yorku.ca/course/3214 These slides are
More informationLenuta Alboaie Computer Networks
Transport Level Lenuta Alboaie adria@info.uaic.ro 1 Content Transport Level Preliminary UDP (User Datagram Protocol) TCP (Transmission Control Protocol) TCP versus UDP 2 Transport Level Preliminary They
More information7. TCP 최양희서울대학교컴퓨터공학부
7. TCP 최양희서울대학교컴퓨터공학부 1 TCP Basics Connection-oriented (virtual circuit) Reliable Transfer Buffered Transfer Unstructured Stream Full Duplex Point-to-point Connection End-to-end service 2009 Yanghee Choi
More informationTransport Protocols and TCP
Transport Protocols and TCP Functions Connection establishment and termination Breaking message into packets Error recovery ARQ Flow control Multiplexing, de-multiplexing Transport service is end to end
More informationInterconnecting Networks with TCP/IP
Chapter 8 Interconnecting s with TCP/IP 1999, Cisco Systems, Inc. 8-1 Introduction to TCP/IP Internet TCP/IP Early protocol suite Universal 1999, Cisco Systems, Inc. www.cisco.com ICND 8-2 TCP/IP Protocol
More informationThe Transport Layer. Part 1
The Transport Layer Part 1 2 OVERVIEW Part 1 User Datagram Protocol Transmission Control Protocol ARQ protocols Part 2 TCP congestion control Mowgli XTP SCTP WAP 3 Transport Layer Protocols Connect applications
More informationThe Transport Layer. Internet solutions. Nixu Oy PL 21. (Mäkelänkatu 91) Helsinki, Finland. tel fax.
The Transport Layer Nixu Oy PL 21 (Mäkelänkatu 91) 00601 Helsinki, Finland tel. +358 9 478 1011 fax. +358 9 478 1030 info@nixu.fi http://www.nixu.fi OVERVIEW User Datagram Protocol Transmission Control
More informationTransmission Control Protocol. ITS 413 Internet Technologies and Applications
Transmission Control Protocol ITS 413 Internet Technologies and Applications Contents Overview of TCP (Review) TCP and Congestion Control The Causes of Congestion Approaches to Congestion Control TCP Congestion
More informationCS4700/CS5700 Fundamentals of Computer Networks
CS4700/CS5700 Fundamentals of Computer Networks Lecture 14: TCP Slides used with permissions from Edward W. Knightly, T. S. Eugene Ng, Ion Stoica, Hui Zhang Alan Mislove amislove at ccs.neu.edu Northeastern
More informationComputer Networks and Data Systems
Computer Networks and Data Systems Transport Layer TDC463 Winter 2011/12 John Kristoff - DePaul University 1 Why a transport layer? IP gives us end-to-end connectivity doesn't it? Why, or why not, more
More informationCS457 Transport Protocols. CS 457 Fall 2014
CS457 Transport Protocols CS 457 Fall 2014 Topics Principles underlying transport-layer services Demultiplexing Detecting corruption Reliable delivery Flow control Transport-layer protocols User Datagram
More information