CIRCUIT SWITCHING AND PACKET SWITCHING
|
|
- Clyde Rogers
- 7 years ago
- Views:
Transcription
1 Islamic University Of Gaza Data Communication Faculty of Engineering Discussion Computer Department Chapter 10 Eng. Ahmed M. Ayash Date: 19/12/2012 Chapter 10 CIRCUIT SWITCHING AND PACKET SWITCHING Switched Network Consists of a series of interlinked nodes called switched. (Switching nodes). Figure 10.1 a simple network. 1
2 The devices attached to the network may be referred to as stations. The stations may be computers, terminals, telephones, or other communicating devices. Node-station links are generally dedicated point-to-point links. Node-node links are usually multiplexed, using either frequency division multiplexing (FDM) or time division multiplexing (TDM). Switching Network technologies Figure 10.2 Switching Network technologies. Circuit Switching: uses a dedicated path between two stations for communication. The link can be permanent (leased line) or temporary (telephone). Each connection uses only one dedicated channel on each link. Each link is normally divided into n channels by using FDM or TDM. Was designed for voice. Switching take place at physical layer Figure 10.3 Circuit Switching 2
3 Communication via circuit switching involves three phases: Circuit establishment (setup) - create dedicated channel by sending a request. Data transfer. Circuit disconnect (teardown) - Signal is sent to each switch to release resources. Example1: A path in a digital circuit-switched network has a data rate of 1 Mbps. The exchange of 1000 bits is required for the setup and teardown phases. The distance between two parties is 5000 km. answer the following questions if the propagation speed is 2 X 10 8 m/s: a. What is the total delay if 1000 bits of data are exchanged during the data transfer phase? b. What is the total delay if 100,000 bits of data are exchanged during the data transfer phase? c. What is the total delay if 1,000,000 bits of data are exchanged during the data transfer phase? We assume that the setup phase is a two-way communication and the teardown phase is a one-way communication. These two phases are common for all three cases. The delay for these two phases can be calculated as three propagation delays and three transmission delays or 3 [(5000 km)/ ( m/s)] + 3 [(1000 bits/1 Mbps)] = 75 ms + 3 ms = 78 ms We assume that the data transfer is in one direction; the total delay is then delay for setup and teardown + propagation delay + transmission delay a = 104 ms b = 203 ms c = 1103 ms Packet switching: was designed for data and transmitted in small packets. Packets contains user data and control info 3
4 Packet Switching Techniques o Datagram Network o Virtual-Circuit Network Datagram Network: each packet is treated independently, with no reference to packets that have gone before. Datagram switching is done at network layer. Figure 10.4 Datagram switching A switch in a datagram network uses a routing table that is based on the destination address. The destination address in the header of a packet in a datagram network remains the same during the entire journey of the packet. 4
5 Example2: The following Figure shows a switch (router) in a datagram network. Find the output port for packets with the following destination addresses: Packet 1: 7176 Packet 2: 1233 Packet 3: 8766 Packet 4: 9144 Packet 1: 2 Packet 2: 3 Packet 3: 3 Packet 4: 2 Example3: Five equal-size datagrams belonging to the same message leave for the destination one after another. However, they travel through different paths as shown in the following table: We assume that the delay for each switch (including waiting and processing) is 3, 10, 20, 7, and 20 ms respectively. Assuming that the propagation speed is 2 x 10 8 m/s. Find the order the datagrams arrive at the destination and the delay for each. Ignore any other delays in transmission. The arrival timed is calculated as: First: (3200 Km) / (2 x 10 8 m/s) + ( ) = 59.0 ms Second: (11700 Km) / (2 x 10 8 m/s) + ( ) = 91.5 ms Third: (12200 Km) / (2 x 10 8 m/s) + ( ) = ms Fourth: (10200 Km) / (2 x 10 8 m/s) + ( ) = 81.0 ms Fifth: (10700 Km) / (2 x 10 8 m/s) + ( ) = ms The order of arrival is:
6 Virtual-Circuit Network: Packets form a single message travel along the same path. Implemented in data link layer. Each packet contains a virtual circuit identifier instead of destination address. Three phases to transfer data. Example4: 6 Figure 10.5 Virtual-Circuit Network The following Figure shows a switch in a virtual circuit network. Find the output port and the output VCI for packets with the following input port and input VCI addresses: Packet 1: 3, 78 Packet 2: 2, 92 Packet 3: 4, 56 Packet 4: 2, 71 Packet 1: 2, 70 Packet 2: 1, 45 Packet 3: 3, 11 Packet 4: 4, 41
7 X.25 and Frame relay X.25 is the standard protocol for the interface between an end system and a packet-switching network. defines three layers o Physical - Interface between attached station and link to node. o Link - Link Access Protocol Balanced (LAPB) o Packet - External virtual circuits Figure 10.6 X.25 Use of Virtual Circuits Frame relay is a form of packet switching that provides a streamlined interface compared to X.25, with improved performance. Designed to be more efficient than X.25 Designed to eliminate much of the overhead that X.25 imposes on end user systems and on the packet-switching network. 7
Referring to the above question, the end-to-end delay (transmission delay plus propagation delay) is
CS326e Quiz 3 The first correct 10 answers will be worth 1 point each. Each subsequent correct answer will be worth 0.2 points. Circle the correct answer. UTEID In the following 7 problems, we are sending
More informationCH.1. Lecture # 2. Computer Networks and the Internet. Eng. Wafaa Audah. Islamic University of Gaza. Faculty of Engineering
Islamic University of Gaza Faculty of Engineering Computer Engineering Department Networks Discussion ECOM 4021 Lecture # 2 CH1 Computer Networks and the Internet By Feb 2013 (Theoretical material: page
More informationR2. The word protocol is often used to describe diplomatic relations. How does Wikipedia describe diplomatic protocol?
Chapter 1 Review Questions R1. What is the difference between a host and an end system? List several different types of end systems. Is a Web server an end system? 1. There is no difference. Throughout
More informationSolution. (Chapters 5-6-7-8) Dr. Hasan Qunoo. The Islamic University of Gaza. Faculty of Engineering. Computer Engineering Department
The Islamic University of Gaza Faculty of Engineering Computer Engineering Department Data Communications ECOM 4314 Solution (Chapters 5-6-7-8) Dr. Hasan Qunoo Eng. Wafaa Audah Eng. Waleed Mousa 1. A cable
More informationMobile IP Network Layer Lesson 02 TCP/IP Suite and IP Protocol
Mobile IP Network Layer Lesson 02 TCP/IP Suite and IP Protocol 1 TCP/IP protocol suite A suite of protocols for networking for the Internet Transmission control protocol (TCP) or User Datagram protocol
More informationChapter 11: WAN. Abdullah Konak School of Information Sciences and Technology Penn State Berks. Wide Area Networks (WAN)
Chapter 11: WAN Abdullah Konak School of Information Sciences and Technology Penn State Berks Wide Area Networks (WAN) The scope of a WAN covers large geographic areas including national and international
More informationNote! The problem set consists of two parts: Part I: The problem specifications pages Part II: The answer pages
Part I: The problem specifications NTNU The Norwegian University of Science and Technology Department of Telematics Note! The problem set consists of two parts: Part I: The problem specifications pages
More informationIntroduction to WAN Technologies
CHAPTER 3 Chapter Goals Become familiar with WAN terminology. Learn about different types of WAN connections. Become familiar with different types of WAN equipment. This chapter introduces the various
More informationIntroduction to Metropolitan Area Networks and Wide Area Networks
Introduction to Metropolitan Area Networks and Wide Area Networks Chapter 9 Learning Objectives After reading this chapter, you should be able to: Distinguish local area networks, metropolitan area networks,
More informationAsynchronous Transfer Mode: ATM. ATM architecture. ATM: network or link layer? ATM Adaptation Layer (AAL)
Asynchrous Transfer Mode: architecture 1980s/1990 s standard for high-speed (155Mbps to 622 Mbps and higher) Broadband Integrated Service Digital Network architecture Goal: integrated, end-end transport
More informationNetwork Technologies
Network Technologies Telephone Networks IP Networks ATM Networks Three Network Technologies Telephone Network The largest worldwide computer network, specialized for voice ing technique: Circuit-switching
More informationWAN Data Link Protocols
WAN Data Link Protocols In addition to Physical layer devices, WANs require Data Link layer protocols to establish the link across the communication line from the sending to the receiving device. 1 Data
More informationEITF25 Internet Techniques and Applications L5: Wide Area Networks (WAN) Stefan Höst
EITF25 Internet Techniques and Applications L5: Wide Area Networks (WAN) Stefan Höst Data communication in reality In reality, the source and destination hosts are very seldom on the same network, for
More information:-------------------------------------------------------Instructor---------------------
Yarmouk University Hijjawi Faculty for Engineering Technology Computer Engineering Department CPE-462 Digital Data Communications Final Exam: A Date: 20/05/09 Student Name :-------------------------------------------------------Instructor---------------------
More informationWide Area Networks. Learning Objectives. LAN and WAN. School of Business Eastern Illinois University. (Week 11, Thursday 3/22/2007)
School of Business Eastern Illinois University Wide Area Networks (Week 11, Thursday 3/22/2007) Abdou Illia, Spring 2007 Learning Objectives 2 Distinguish between LAN and WAN Distinguish between Circuit
More informationNew York University Computer Science Department Courant Institute of Mathematical Sciences
New York University Computer Science Department Courant Institute of Mathematical Sciences Course Title: Data Communication & Networks Course Number: g22.2662-001 Instructor: Jean-Claude Franchitti Session:
More informationIntroduction to WAN Technologies
CHAPTER 3 Introduction to WAN Technologies This chapter introduces the various protocols and technologies used in wide- area network (WAN) environments. Topics summarized here include point-to-point links,
More informationThree Network Technologies
Three Network Technologies Network The largest worldwide computer network, specialized for voice ing technique: Circuit-switching Internet The global public information infrastructure for data ing technique:
More informationIntroduction to Communication Networks Spring 2007. Unit 5 Switching Principles
Introduction to Communication Networks Spring 2007 Unit 5 Switching Principles Acknowledgements slides comming from: Data and Computer Communication by Wiliam Stallings (our supplementary textbook) numerous
More informationMPLS. Packet switching vs. circuit switching Virtual circuits
MPLS Circuit switching Packet switching vs. circuit switching Virtual circuits MPLS Labels and label-switching Forwarding Equivalence Classes Label distribution MPLS applications Packet switching vs. circuit
More informationFinal for ECE374 05/06/13 Solution!!
1 Final for ECE374 05/06/13 Solution!! Instructions: Put your name and student number on each sheet of paper! The exam is closed book. You have 90 minutes to complete the exam. Be a smart exam taker -
More informationInternet Packets. Forwarding Datagrams
Internet Packets Packets at the network layer level are called datagrams They are encapsulated in frames for delivery across physical networks Frames are packets at the data link layer Datagrams are formed
More informationCS335 Sample Questions for Exam #2
CS335 Sample Questions for Exam #2.) Compare connection-oriented with connectionless protocols. What type of protocol is IP? How about TCP and UDP? Connection-oriented protocols Require a setup time to
More informationCMPT 165: The Internet, Part 3
CMPT 165: The Internet, Part 3 Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University September 15, 2011 1 Basic Communication Technology Packet Switching (sharing a tranmission
More informationIntroduction, Rate and Latency
Introduction, Rate and Latency Communication Networks Why communicate? Necessary to support some application. Example Applications Audio communication Radio, Telephone Text communication Email, SMS (text
More information11/22/2013 1. komwut@siit
11/22/2013 1 Week3-4 Point-to-Point, LAN, WAN Review 11/22/2013 2 What will you learn? Representatives for Point-to-Point Network LAN Wired Ethernet Wireless Ethernet WAN ATM (Asynchronous Transfer Mode)
More informationTransport Layer Protocols
Transport Layer Protocols Version. Transport layer performs two main tasks for the application layer by using the network layer. It provides end to end communication between two applications, and implements
More informationComputer Networks. Wireless and Mobile Networks. László Böszörményi Computer Networks Mobile - 1
Computer Networks Wireless and Mobile Networks László Böszörményi Computer Networks Mobile - 1 Background Number of wireless (mobile) phone subscribers now exceeds number of wired phone subscribers! Computer
More informationMobile IP Network Layer Lesson 01 OSI (open systems interconnection) Seven Layer Model and Internet Protocol Layers
Mobile IP Network Layer Lesson 01 OSI (open systems interconnection) Seven Layer Model and Internet Protocol Layers Oxford University Press 2007. All rights reserved. 1 OSI (open systems interconnection)
More informationCS 78 Computer Networks. Internet Protocol (IP) our focus. The Network Layer. Interplay between routing and forwarding
CS 78 Computer Networks Internet Protocol (IP) Andrew T. Campbell campbell@cs.dartmouth.edu our focus What we will lean What s inside a router IP forwarding Internet Control Message Protocol (ICMP) IP
More informationProtocols and Architecture. Protocol Architecture.
Protocols and Architecture Protocol Architecture. Layered structure of hardware and software to support exchange of data between systems/distributed applications Set of rules for transmission of data between
More informationRouting in packet-switching networks
Routing in packet-switching networks Circuit switching vs. Packet switching Most of WANs based on circuit or packet switching Circuit switching designed for voice Resources dedicated to a particular call
More informationIntroduction. Abusayeed Saifullah. CS 5600 Computer Networks. These slides are adapted from Kurose and Ross
Introduction Abusayeed Saifullah CS 5600 Computer Networks These slides are adapted from Kurose and Ross Roadmap 1.1 what is the Inter? 1.2 work edge end systems, works, links 1.3 work core packet switching,
More informationProtocol Architecture. ATM architecture
Asynchronous Transfer Mode (ATM) Asynchronous Transfer Mode: ATM 1990 s/00 standard for high-speed (155Mbps to 622 Mbps and higher) Broadband Integrated Service Digital Network architecture Goal: integrated,
More informationExam 1 Review Questions
CSE 473 Introduction to Computer Networks Exam 1 Review Questions Jon Turner 10/2013 1. A user in St. Louis, connected to the internet via a 20 Mb/s (b=bits) connection retrieves a 250 KB (B=bytes) web
More informationTransport and Network Layer
Transport and Network Layer 1 Introduction Responsible for moving messages from end-to-end in a network Closely tied together TCP/IP: most commonly used protocol o Used in Internet o Compatible with a
More informationEthernet. Ethernet Frame Structure. Ethernet Frame Structure (more) Ethernet: uses CSMA/CD
Ethernet dominant LAN technology: cheap -- $20 for 100Mbs! first widely used LAN technology Simpler, cheaper than token rings and ATM Kept up with speed race: 10, 100, 1000 Mbps Metcalfe s Etheret sketch
More informationComputer Networks Homework 1
Computer Networks Homework 1 Reference Solution 1. (15%) Suppose users share a 1 Mbps link. Also suppose each user requires 100 kbps when transmitting, but each user transmits only 10 percent of the time.
More informationDATA COMMUNICATIONS AND NETWORKING. Solved Examples
Page 1 of 10 DATA COMMUNICATIONS AND NETWORKING Solved Examples References: STA: Stallings, Data and Computer Communications, 6 th ed. TAN: Tannenbaum, Computer Networks, 4 th ed.) 1. Given the following
More informationModule 5. Broadcast Communication Networks. Version 2 CSE IIT, Kharagpur
Module 5 Broadcast Communication Networks Lesson 1 Network Topology Specific Instructional Objectives At the end of this lesson, the students will be able to: Specify what is meant by network topology
More informationFundamentals of Telecommunications
Fundamentals of Telecommunications Professor of CIS Columbus, OH 43210 Jain@ACM.Org http://www.cis.ohio-state.edu/~jain/ 1 Overview Time Division Multiplexing T1, T3, DS1, E1 T1 Framing Echo Cancellation
More informationSFWR 4C03: Computer Networks & Computer Security Jan 3-7, 2005. Lecturer: Kartik Krishnan Lecture 1-3
SFWR 4C03: Computer Networks & Computer Security Jan 3-7, 2005 Lecturer: Kartik Krishnan Lecture 1-3 Communications and Computer Networks The fundamental purpose of a communication network is the exchange
More informationIndian Institute of Technology Kharagpur. TCP/IP Part I. Prof Indranil Sengupta Computer Science and Engineering Indian Institute of Technology
Indian Institute of Technology Kharagpur TCP/IP Part I Prof Indranil Sengupta Computer Science and Engineering Indian Institute of Technology Kharagpur Lecture 3: TCP/IP Part I On completion, the student
More informationBased on Computer Networking, 4 th Edition by Kurose and Ross
Computer Networks Network Layer, Virtual Circuits and Datagram Networks Based on Computer Networking, 4 th Edition by Kurose and Ross Network layer segment from sending to receiving host on sending side
More informationLecture 21 ISDN Integrated Digital Network.
Lecture 21 ISDN is an acronym for Integrated Services Digital Network. ISDN was developed to cater the needs of users who want high data rate, since conventional telephone line is not capable of providing
More informationCellular Technology Sections 6.4 & 6.7
Overview Cellular Technology Sections 6. & 6.7 CSC 9 December, 0 Cellular architecture evolution Cellular telephony and internet terminology Mobility for cellular mobiles 6- Components of cellular architecture
More informationArchitecture and Performance of the Internet
SC250 Computer Networking I Architecture and Performance of the Internet Prof. Matthias Grossglauser School of Computer and Communication Sciences EPFL http://lcawww.epfl.ch 1 Today's Objectives Understanding
More informationCS 5480/6480: Computer Networks Spring 2012 Homework 4 Solutions Due by 1:25 PM on April 11 th 2012
CS 5480/6480: Computer Networks Spring 2012 Homework 4 Solutions Due by 1:25 PM on April 11 th 2012 Important: The solutions to the homework problems from the course book have been provided by the authors.
More informationVoIP network planning guide
VoIP network planning guide Document Reference: Volker Schüppel 08.12.2009 1 CONTENT 1 CONTENT... 2 2 SCOPE... 3 3 BANDWIDTH... 4 3.1 Control data 4 3.2 Audio codec 5 3.3 Packet size and protocol overhead
More informationCHAPTER 18 THE PUBLIC TELEPHONE NETWORK # DEFINITIONS TERMS
CHAPTER 18 THE PUBLIC TELEPHONE NETWORK # DEFINITIONS TERMS 1) It uses the largest computer network in the world to interconnect millions of subscribers in such a way that the myriad of companies function
More informationComputer Networks. Definition of LAN. Connection of Network. Key Points of LAN. Lecture 06 Connecting Networks
Computer Networks Lecture 06 Connecting Networks Kuang-hua Chen Department of Library and Information Science National Taiwan University Local Area Networks (LAN) 5 kilometer IEEE 802.3 Ethernet IEEE 802.4
More informationWhat You Will Learn About. Computers Are Your Future. Chapter 8. Networks: Communicating and Sharing Resources. Network Fundamentals
What You Will Learn About Computers Are Your Future Chapter 8 Networks: Communicating and Sharing Resources Basic networking concepts Advantages and disadvantages of networks Peer-to-peer and client/server
More informationThe Telephone Network. An Engineering Approach to Computer Networking
The Telephone Network An Engineering Approach to Computer Networking Is it a computer network? Specialized to carry voice Also carries telemetry video fax modem calls Internally, uses digital samples Switches
More informationComputer Network. Interconnected collection of autonomous computers that are able to exchange information
Introduction Computer Network. Interconnected collection of autonomous computers that are able to exchange information No master/slave relationship between the computers in the network Data Communications.
More information2. What is the maximum value of each octet in an IP address? A. 128 B. 255 C. 256 D. None of the above
1. How many bits are in an IP address? A. 16 B. 32 C. 64 2. What is the maximum value of each octet in an IP address? A. 128 B. 255 C. 256 3. The network number plays what part in an IP address? A. It
More informationVoice over IP. Demonstration 1: VoIP Protocols. Network Environment
Voice over IP Demonstration 1: VoIP Protocols Network Environment We use two Windows workstations from the production network, both with OpenPhone application (figure 1). The OpenH.323 project has developed
More informationMultiplexing. Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across a single physical medium.
Multiplexing Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across a single physical medium. The following two factors in data communications lead to
More information1 Introduction to mobile telecommunications
1 Introduction to mobile telecommunications Mobile phones were first introduced in the early 1980s. In the succeeding years, the underlying technology has gone through three phases, known as generations.
More informationEECC694 - Shaaban. Transmission Channel
The Physical Layer: Data Transmission Basics Encode data as energy at the data (information) source and transmit the encoded energy using transmitter hardware: Possible Energy Forms: Electrical, light,
More information2 Basic Concepts. Contents
2. Basic Concepts Contents 2 Basic Concepts a. Link configuration b. Topology c. Transmission mode d. Classes of networks 1 a. Link Configuration Data links A direct data link is one that establishes a
More informationWAN Technology. Heng Sovannarith heng_sovannarith@yahoo.com
WAN Technology Heng Sovannarith heng_sovannarith@yahoo.com Introduction A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided
More informationOverview of Network Hardware and Software. CS158a Chris Pollett Jan 29, 2007.
Overview of Network Hardware and Software CS158a Chris Pollett Jan 29, 2007. Outline Scales of Networks Protocol Hierarchies Scales of Networks Last day, we talked about broadcast versus point-to-point
More informationWhite Paper: Voice Over IP Networks
FREE FREE One One Hour Hour VoIPonline VoIPonline Seminar TM Seminar TM For additional information contact: Terry Shugart - tshugart@analogic.com http://www.analogic.com/cti TEL: 978-977-3000 FAX: 978-977-6813
More informationNote! The problem set consists of two parts: Part I: The problem specifications pages Part II: The answer pages
Part I: The problem specifications NTNU The Norwegian University of Science and Technology Department of Telematics Note! The problem set consists of two parts: Part I: The problem specifications pages
More informationBCS THE CHARTERED INSTITUTE FOR IT. BCS HIGHER EDUCATION QUALIFICATIONS BCS Level 5 Diploma in IT COMPUTER NETWORKS
BCS THE CHARTERED INSTITUTE FOR IT BCS HIGHER EDUCATION QUALIFICATIONS BCS Level 5 Diploma in IT COMPUTER NETWORKS Friday 2 nd October 2015 Morning Answer any FOUR questions out of SIX. All questions carry
More informationECE 358: Computer Networks. Solutions to Homework #4. Chapter 4 - The Network Layer
ECE 358: Computer Networks Solutions to Homework #4 Chapter 4 - The Network Layer P 4. Consider the network below. a. Suppose that this network is a datagram network. Show the forwarding table in router
More informationFaculty of Engineering Computer Engineering Department Islamic University of Gaza 2012. Network Chapter# 19 INTERNETWORK OPERATION
Faculty of Engineering Computer Engineering Department Islamic University of Gaza 2012 Network Chapter# 19 INTERNETWORK OPERATION Review Questions ٢ Network Chapter# 19 INTERNETWORK OPERATION 19.1 List
More informationAsynchronous Transfer Mode
CHAPTER 15 Asynchronous Transfer Mode Background Asynchronous Transfer Mode (ATM) technology is based on the efforts of the International Telecommunication Union Telecommunication Standardization Sector
More informationECE 358: Computer Networks. Homework #3. Chapter 5 and 6 Review Questions 1
ECE 358: Computer Networks Homework #3 Chapter 5 and 6 Review Questions 1 Chapter 5: The Link Layer P26. Let's consider the operation of a learning switch in the context of a network in which 6 nodes labeled
More informationUnderstand Wide Area Networks (WANs)
Understand Wide Area Networks (WANs) Lesson Overview In this lesson, you will review: Dial-up Integrated services digital networks (ISDN) Leased lines Virtual private networks (VPN) Wide area networks
More informationNetwork Layer: Network Layer and IP Protocol
1 Network Layer: Network Layer and IP Protocol Required reading: Garcia 7.3.3, 8.1, 8.2.1 CSE 3213, Winter 2010 Instructor: N. Vlajic 2 1. Introduction 2. Router Architecture 3. Network Layer Protocols
More informationHigh-Level Data Link Control
High-Level Data Link Control This class of data link layer protocols includes High-level Data Link Control (HDLC), Link Access Procedure Balanced (LAPB) for X.25, Link Access Procedure for D-channel (LAPD)
More informationMultiprotocol Label Switching (MPLS)
Multiprotocol Label Switching (MPLS) รศ.ดร. อน นต ผลเพ ม Asso. Prof. Anan Phonphoem, Ph.D. anan.p@ku.ac.th http://www.cpe.ku.ac.th/~anan Computer Engineering Department Kasetsart University, Bangkok, Thailand
More informationWAN. Introduction. Services used by WAN. Circuit Switched Services. Architecture of Switch Services
WAN Introduction Wide area networks (WANs) Connect BNs and LANs across longer distances, often hundreds of miles or more Typically built by using leased circuits from common carriers such as AT&T Most
More informationOperating System Concepts. Operating System 資 訊 工 程 學 系 袁 賢 銘 老 師
Lecture 7: Distributed Operating Systems A Distributed System 7.2 Resource sharing Motivation sharing and printing files at remote sites processing information in a distributed database using remote specialized
More informationMaster Course Computer Networks IN2097
Chair for Network Architectures and Services Prof. Carle Department for Computer Science TU München Master Course Computer Networks IN2097 Prof. Dr.-Ing. Georg Carle Christian Grothoff, Ph.D. Chair for
More informationSDH and WDM: a look at the physical layer
SDH and WDM: a look at the physical SDH and WDM A look at the physical Andrea Bianco Telecommunication Network Group firstname.lastname@polito.it http://www.telematica.polito.it/ Network management and
More informationCourse Duration: Course Content Course Description Course Objectives Course Requirements
Course: TCS 201 Telecommunication and Networks I (3 credits compulsory) Course Duration: The course shall comprise of 45hours of theory and practical classes. The theory will be taught for 30hours of 2hours
More informationCommunication Networks. MAP-TELE 2011/12 José Ruela
Communication Networks MAP-TELE 2011/12 José Ruela Network basic mechanisms Introduction to Communications Networks Communications networks Communications networks are used to transport information (data)
More informationSDH and WDM A look at the physical layer
SDH and WDM A look at the physical Andrea Bianco Telecommunication Network Group firstname.lastname@polito.it http://www.telematica.polito.it/ Network management and QoS provisioning - 1 Copyright This
More informationSol: Optical range from λ 1 to λ 1 +Δλ contains bandwidth
1. Use Figure 3.47 and Figure 3.50 to explain why the bandwidth of twisted-wire pairs and coaxial cable decreases with distance. Figure 3.47 figure 3.50 sol: The bandwidth is the range of frequencies where
More informationNetwork management and QoS provisioning - QoS in the Internet
QoS in the Internet Inernet approach is based on datagram service (best effort), so provide QoS was not a purpose for developers. Mainly problems are:. recognizing flows;. manage the issue that packets
More informationESSENTIALS. Understanding Ethernet Switches and Routers. April 2011 VOLUME 3 ISSUE 1 A TECHNICAL SUPPLEMENT TO CONTROL NETWORK
VOLUME 3 ISSUE 1 A TECHNICAL SUPPLEMENT TO CONTROL NETWORK Contemporary Control Systems, Inc. Understanding Ethernet Switches and Routers This extended article was based on a two-part article that was
More informationEE4367 Telecom. Switching & Transmission. Prof. Murat Torlak
Packet Switching and Computer Networks Switching As computer networks became more pervasive, more and more data and also less voice was transmitted over telephone lines. Circuit Switching The telephone
More informationNetwork Layer. Introduction Datagrams and Virtual Circuits Routing Traffic Control. Data delivery from source to destination.
Layer Introduction Datagrams and Virtual ircuits Routing Traffic ontrol Main Objective Data delivery from source to destination Node (Router) Application Presentation Session Transport Data Link Data Link
More informationData Communication and Computer Network
1 Data communication principles, types and working principles of modems, Network principles, OSI model, functions of data link layer and network layer, networking components, communication protocols- X
More informationMPLS Environment. To allow more complex routing capabilities, MPLS permits attaching a
MPLS Environment Introduction to MPLS Multi-Protocol Label Switching (MPLS) is a highly efficient and flexible routing approach for forwarding packets over packet-switched networks, irrespective of the
More informationData Link Layer Overview
Data Link Layer Overview Date link layer deals with two basic issues: Part I How data frames can be reliably transmitted, and Part II How a shared communication medium can be accessed In many networks,
More informationNortel - 920-803. Technology Standards and Protocol for IP Telephony Solutions
1 Nortel - 920-803 Technology Standards and Protocol for IP Telephony Solutions QUESTION: 1 To achieve the QoS necessary to deliver voice between two points on a Frame Relay network, which two items are
More informationStrategies. Addressing and Routing
Strategies Circuit switching: carry bit streams original telephone network Packet switching: store-and-forward messages Internet Spring 2007 CSE 30264 14 Addressing and Routing Address: byte-string that
More informationOverview of WAN Connections Module 1
Overview of WAN Connections Module 1 Objectives This module introduces the basic elements of WAN connections and describes the role each element plays in creating that connection. After completing this
More informationUnderstanding OpenFlow
Understanding OpenFlow Technical Whitepaper June, 2014 Saurabh Kumar Agarwal Email: saurabh29july@gmail.com Abstract Technical overview of OpenFlow Switch Specification, Version 1.0.0, published on December
More informationThree Key Design Considerations of IP Video Surveillance Systems
Three Key Design Considerations of IP Video Surveillance Systems 2012 Moxa Inc. All rights reserved. Three Key Design Considerations of IP Video Surveillance Systems Copyright Notice 2012 Moxa Inc. All
More informationChapter 2 - The TCP/IP and OSI Networking Models
Chapter 2 - The TCP/IP and OSI Networking Models TCP/IP : Transmission Control Protocol/Internet Protocol OSI : Open System Interconnection RFC Request for Comments TCP/IP Architecture Layers Application
More informationWAN Technologies Based on CCNA 4 v3.1 Slides Compiled & modified by C. Pham
WAN Technologies Based on CCNA 4 v3.1 Slides Compiled & modified by C. Pham 1 Wide-area Networks (WANs) 2 Metropolitan-Area Network (MANs) 3 Path Determination 4 Internetworking Any internetwork must include
More information2. What is the maximum value of each octet in an IP address? A. 28 B. 255 C. 256 D. None of the above
CCNA1 V3.0 Mod 10 (Ch 8) 1. How many bits are in an IP C. 64 2. What is the maximum value of each octet in an IP A. 28 55 C. 256 3. The network number plays what part in an IP A. It specifies the network
More informationCommunications and Computer Networks
SFWR 4C03: Computer Networks and Computer Security January 5-8 2004 Lecturer: Kartik Krishnan Lectures 1-3 Communications and Computer Networks The fundamental purpose of a communication system is the
More informationInternet Architecture and Philosophy
Internet Architecture and Philosophy Conceptually, TCP/IP provides three sets of services to the user: Application Services Reliable Transport Service Connectionless Packet Delivery Service The underlying
More informationCS 640: Introduction to Computer Networks. Goals of This Class. Goal of Networking. Page 1. Understand principles and practice of networking
CS 640: Introduction to Computer Networks Aditya Akella Lecture 1 Introduction http://www.cs.wisc.edu/~akella/cs640/f07 1 Goals of This Class Understand principles and practice of networking ow are modern
More informationLink Layer. 5.6 Hubs and switches 5.7 PPP 5.8 Link Virtualization: ATM and MPLS
Link Layer 5.1 Introduction and services 5.2 Error detection and correction 5.3Multiple access protocols 5.4 Link-Layer Addressing 5.5 Ethernet 5.6 Hubs and switches 5.7 PPP 5.8 Link Virtualization: and
More information