Prof. Shervin Shirmohammadi SITE, University of Ottawa. Design Technologies. Lecture 17: Prof. Shervin Shirmohammadi CEG
|
|
- Brendan August McBride
- 5 years ago
- Views:
Transcription
1 Lecture 17: Design Technologies Prof. Shervin Shirmohammadi SITE, University of Ottawa Prof. Shervin Shirmohammadi CEG
2 Design Goals From the architecture and its components and simulation, we have an idea in terms of physical requirements of network elements such as routers, hubs, links, etc. In the design phase, choices are made about cabling, physical and data-link-layer protocols, and internetworking devices (hubs, switches, and routers). The network architecture models form the foundation for physical design. The business goals, technical requirements, network traffic characteristics, and traffic flows all influence the physical design. Prof. Shervin Shirmohammadi CEG
3 Types of Cable Shielded copper, shielded twisted pair (STP), coaxial (coax), and twin-axial (twinax). Popular early days of LANs. Thick Ethernet (10base5) double shielded 50 ohm coax cable, 0.4 diameter. Later thin Ethernet (10Base2), 75 ohm cable. Unshielded copper (Typically UTP). Must adhere to strict distance requirements: Cat 1&2 not recommended due to lack of support for high bandwidth. Cat 3 tested to 16 MHz, Ethernet and 4Mbps token ring configuration. Cat 4 tested to 20 MHz, 16 Mbps token ring configuration. Not common. Cat 5 tested up to 100 MHz, 100 Mbps Ethernet and FDDI. Cat 5e (enhanced) tested up to 350 MHz, suitable for 100 Mbps and Gigabit Ethernet, and ATM. Cat 6 tested up to 200 MHz, also suitable for 100 Mbps and Gigabit Ethernet, and ATM. Cat 6 is recommended by TIA (Telecommunications Industry Association) fro all future installments. Fiber optics Becoming a standard now for MAN and WAN. NIC equipment is expensive. There is no cross talk or EM interference. Runs in single or multi-mode. Prof. Shervin Shirmohammadi CEG
4 LAN Technologies - Ethernet Ethernet Developed by Xerox in 1970s. Ethernet 2 & IEEE Version 2 of Ethernet was published in 1982 by DEC, Intel, and Xerox IEEE published in 1983 evolved from Ethernet 2. IEEE Choices: Half- and full-duplex Ethernet 10-Mbps Ethernet 100-Mbps Ethernet a.k.a. Fast Ethernet (IEEE 802.3u initially) Gbps Ethernet (IEEE 802.3z initially) 10-Gbps Ethernet (IEEE 802.3ae initially) Metro Ethernet, Long Range Ethernet, and CISCO Fast EtherChannel. Ethernet Can be used at access, core, or distribution. Originally designed for a share medium using the CSMA/CD protocol for managing data collisions. In a shared Ethernet stations listen before sending data. (Half-duplex mode) Point-to-point Ethernet support full duplex mode. Transmission rate theoretically double the half-duplex mode. Requires 2 path cabling One of the most significant rules for Ethernet is that the round-trip propagation delay in one collision domain must not exceed the time it takes a sender to transmit 512 bits. (This is 51.2 microseconds for 10-Mbps Ehternet. A single collision domain must be limited in size such that a minimum sized frame (64 bytes) can detect a collision reflecting back from the opposite end while the station is still sending the frame. Prof. Shervin Shirmohammadi CEG
5 10-Mbps Coax and UTP Ethernet Scalability Constraints 10Base5 10Base2 10BaseT Topology Bus Bus Star Type of cabling Thick coax Thin coax UTP Maximum cable length (m) Max attachments Hub to station 2 Max collision domain (m) Max topology of a collision domain 2,500 Five segments 2,500 Five segments 2,500 Five segments Prof. Shervin Shirmohammadi CEG
6 10-Mbps Multimode Fiber-Optic Ethernet Scalability Constraints Prof. Shervin Shirmohammadi CEG
7 100 Mbps Ethernet a.k.a. Fast Ethernet Four physical implementations: 100Base-TX: Two pairs of Cat 5 UTP Cabling 100Base-T2: Two pairs of Cat 3 UTP Cabling 100Base-T4: Four pairs Cat 3 UTP Cabling 100Base-FX: Two Multi-mode or single-mode fiber. Follows the same physical constraints as 10BaseT in that the round trip delay cannot exceed the time it takes to transmit a 512 bit frame (5.12 micro seconds). Limiting the distance to 205 meters when using 2 Class II repeaters. Prof. Shervin Shirmohammadi CEG
8 100-Mbps Maximum Collision Domains Class I Repeater: latency of 0.7 microseconds or less Class II Repeater: latency of 0.46 microseconds or less Prof. Shervin Shirmohammadi CEG
9 Gigabit Ethernet Gigabit Ethernet is mostly used in the core part of the network where flows tend to be aggregated. Four types: 1000Base-SX: short wavelength specification 1000Base-LX: long wavelength specification 1000Base-CX: telecommunications closet 1000Base-T: intended fro Category 5 UTP cabling Prof. Shervin Shirmohammadi CEG
10 10-Gbps Ethernet Slowly taking off in terms of deployment. 10-Gigabit Ethernet is used in the core part of the network. * Up to 40 Km, depending on link attenuation. Prof. Shervin Shirmohammadi CEG
11 Token Ring Defined in IEEE More susceptible to problems than Ethernet. Runs in half or full-duplex with speeds that include 4-Mbps to 16 Mbps. The IEEE MAC Layer specifies timers that are used to monitor the state of the ring. When a station sends a frame into the ring it must see the frame return within the value of TRR=4 ms. This determines the length of the ring. Not a good choice for new network design but there are many options for upgrading which include shared and switched token ring, half and full-duplex, UTP support, and new initiatives on 100 Mbps and Gigabit Token Ring. Prof. Shervin Shirmohammadi CEG
12 FDDI Fiber Distributed Data Interface (FDDI) is the ANSI / ISO standard for 100 Mbps transmission of data on fiber-optic cabling. It also can run on copper as specified by the CDDI specification of FDDI. Uses a timed token-rotation protocol similar to token ring concept for media access control. Has good long distance characteristics and therefore only used where distance warrants it due to the fact that it is more expensive, more complex, and harder to install than Fast Ethernet. Topology Max Cable Length Maximum number of attachments per segment Maximum network size Multi-mode Fiber Dual ring, tree of concentrators,.. 2 km between stations 1,000 or 500 dual attached stations 200 km Single-Mode Fiber Dual ring, tree of concentrators,.. 40 km between stations 1,000 or 500 dual attached stations 200 km UTP Star 100 meters from hub to station km Prof. Shervin Shirmohammadi CEG
13 ATM Asynchronous Transfer Mode (ATM) is a a non-broadcast multiple-access (NBMA) connection-oriented, circuit-switched technology. ATM tends to be more complex and more expensive than Fast Ethernet. It is a good choice though for applications that have high QoS performance and multimedia requirements (video conferencing, medical imaging, distance learning, etc ) End to end QoS is only guaranteed when ATM is deployed over the whole network. Can be used for backbone traffic, but as Ethernet has been scaling upwards and managing to support QoS performance, ATM is not as popular as once the case. Supports more bandwidth than Ethernet (OC-192 [10 Gbps] is currently supported with ATM), but Ethernet is catching up. ATM overhead slightly higher than Ethernet. A 5-byte header is required for each 53-byte ATM cell = 9.4% overhead. This can go up to 24.5% if ATM adaptation modules are used. ATM is also good for WANs. Prof. Shervin Shirmohammadi CEG
14 LANE and MPOA LAN Emulation: most LAN protocols are broadcast-multiple-access, connectionless, packet-switching technologies. ATM is nearly the anti-thesis of Ethernet LAN. This has led to the development of LANE for emulating Ethernet and Token ring on an ATM network. Multiprotocol over ATM (MPOA) standardizes the forwarding of Layer-3 packets between subnets in an ATM LANE environment. It allows a subnet to be bridged across an ATM/LAN boundary, but requires that inter-subnet traffic be forwarded through routers. MPOA is an enhancement to LANE for efficient and direct transfer of intersubnet unicast data. Network Layer Logical Link Layer LAN Emulation Layer ATM Adaptation Layer ATM Physical Layer LUNI ATM Network Network Layer Logical Link Layer LAN Emulation Layer ATM Adaptation Layer ATM Physical Layer Figure 9.3 Layered Architecture of LAN Emulation Prof. Shervin Shirmohammadi CEG
15 Remote Access Technologies Point to Point Protocol (PPP): IETF standard for a data link layer protocol for transporting various network layer PDUs across erial, point to point links. Typically used for dial-up lines, leased lines, ISDN, etc. Integrated Services Digital Network (ISDN), typically offered by regional telephone carriers; works over telephone lines. Cabel Modem: operates over coax cable that is used by cable TV (CATV) typically faster than ISDN (due to higher speed supported by coax) depending on how many users share the coax. 1 cable offers 25 to 50 Mbps downstream and 2 to 3 Mbps upstream, shared by a number of users. Digital Subscriber Line (DSL): high-speed access over telephone lines 1 Asymmetric DSL (ADSL) line offers 1.5 to 9 Mbps downstream and about 640 Kbps upstream Prof. Shervin Shirmohammadi CEG
16 WAN Technologies Synchronous Optical Network (SONET) a physical layer specification for high speed synchronous transmission of packets over fiber optics. Proposed by Bellcore in the 80s. Used in North America. Synchronous Digital Hierarchy (SDH) is similar to SONET in terms of functionality, and is used in the rest of the world. Frame Relay: high-performance physical and datalink layer protocol, introduced in early 90s. Typically operates from 64 Kbps to Mbps. ATM can also support WANs at very high speed (up to OC-192). Prof. Shervin Shirmohammadi CEG
17 WAN Speed Hierarchy North America (DS: digital stream) Europe SDH (STS: Synchronous Transport Signal) Prof. Shervin Shirmohammadi CEG
18 Wireless LANs A wireless LAN uses wireless transmission medium Used to have problems with high prices, low data rates, occupational safety concerns, and licensing requirements Today, problems have been addressed for the most part and hence ppopularity of wireless LANs has grown rapidly Advantages: Saves installation of LAN cabling Eases relocation and other modifications to network structure Applications: Cross-building Interconnect: Connect LANs in nearby buildings, Pointto-point wireless link Nomadic Access: Link between LAN hub and mobile data terminal Laptop or notepad computer Also useful in extended environment such as campus or cluster of buildings where users move around with portable computers Prof. Shervin Shirmohammadi CEG
19 IEEE MAC protocol and physical medium specification for wireless LANs Smallest Building Block (BSS) is basic service set: Number of stations, Same MAC protocol, Competing for access to same shared wireless medium May be isolated or connect to backbone Distribution System (DS) through Access Point (AP) MAC protocol may be distributed or controlled by central coordination function in AP BSS generally corresponds to cell DS can be switch, wired network, or wireless network BSS Configuration: Simple: each station belongs to single BSS, within range of only other stations in the same BSS Overlapped: can have two or more BSSs overlap, so station could participate in more than one BSS. Dynamic: association between station and BSS dynamic, so stations may turn off, come within range, and go out of range Extended Service Set (ESS): Two or more BSS interconnected by DS: appears as a single logical LAN to LLC sub layer. Prof. Shervin Shirmohammadi CEG
20 IEEE Architecture Prof. Shervin Shirmohammadi CEG
21 Services Service Provider Category Association Distribution system MSDU delivery Authentication Station LAN access and security Deauthentication Station LAN access and security Dissassociation Distribution system MSDU delivery Distribution Distribution system MSDU delivery Integration Distribution system MSDU delivery MSDU delivery Station MSDU delivery Privacy Station LAN access and security Reassocation Distribution system MSDU delivery MSDU: MAC Service Data Unit Prof. Shervin Shirmohammadi CEG
22 IEEE Physical Layer First part in 1997 IEEE Includes MAC layer and three physical layer specifications Two in 2.4-GHz band and one infrared All operating at 1 and 2 Mbps Two additional parts in 1999 IEEE a 5-GHz band up to 54 Mbps Data rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mbps IEEE b 2.4-GHz band at 5.5 and 11 Mbps In 2005 IEEE g extends IEEE b to 108 Mbps Most recent in 2007: IEEE n supports up to 540 Mbps Prof. Shervin Shirmohammadi CEG
23 Other Wireless Networks Wireless Personal Area Network (WPAN): IEEE Used mostly for wireless communications among portable digital devices including laptops, cell phones, peripheral devices, and consumer electronics. Not used for LANs or WANs Bluetooth, for example. Broadband Wireless Access: IEEE Used for city-wide wireless connectivity A form of MAN WiMax (Worldwide Interoperability for Microwave Access), for example. Comparison: Parameter Frequency 2-11 GHz 2.4 GHz varies Range ~ 50 Km ~ 100 m ~ 10 m Rate Nodes 70 Mbps Thousands 11 Mbps - 55 Mbps Dozens 20Kbps - 55 Mbps Dozens Prof. Shervin Shirmohammadi CEG
10- and 100-Mbps Ethernet
Ethernet Basics 10-Mbps Ethernet Three 10-Mbps Ethernet standards: 10BASE5 10BASE2 10BASE-T 10BASE2 and 10BASE5 were around more than 20 years and have been replaced by newer alternatives 10BASE-T s use
More informationContents. Introduction to Networking. Preface...i. Introduction... xix
Contents Introduction to Networking Introduction to Networking Preface...i Key Topics...i Course Objectives...ii Pedagogical Features...ii Learning Objectives, Unit Summaries, Discussion Questions, and
More informationIEEE 802 LANs SECTION C
IEEE 802 LANs SECTION C Outline of the Lecture Basic characteristics of LAN Topology Transmission Media MAC IEEE 802 LANs 802.3 - CSMA/CD based (Ethernet) 802.4 Token bus-based 802.5 Token ring-based Comparison
More informationZarządzanie sieciami telekomunikacyjnymi
Ethernet The term Ethernet refers to the family of local-area network (LAN) products covered by the IEEE 802.3 standard that defines what is commonly known as the CSMA/CD protocol. Four data rates are
More informationIntroductory to Computer Networks Local Area Networks. Lecture 16 Fall Isfahan University of technology Dr.
Introductory to Computer Networks Local Area Networks Lecture 16 Fall 2010 Isfahan University of technology Dr. Faramarz Hendessi What is a LAN? Local area means: Private ownership freedom from regulatory
More informationIntroduction to LAN Topologies Cabling. 2000, Cisco Systems, Inc. 3-1
Introduction to LAN Topologies Cabling 2000, Cisco Systems, Inc. 3-1 Objectives Upon completion of this chapter, you will be able to perform the following tasks: Media / Cabling Local Area Network Cabling
More informationLAN, MAN and WAN. Basics and Comparison. University of Damascus. Computer Engineering Dept. Digital Communications. By Abdulrahman Idlbi
In the name of Allah, the Most Gracious, the Most Merciful University of Damascus Computer Engineering Dept. Digital Communications LAN, MAN and WAN Basics and Comparison By Abdulrahman Idlbi Introduction
More informationChapter 3. Underlying Technology. TCP/IP Protocol Suite 1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Chapter 3 Underlying Technology TCP/IP Protocol Suite 1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. OBJECTIVES: To briefly discuss the technology of dominant
More informationNetwork basics. Unit objectives Describe the basic components of a network Identify characteristics of network technologies Analyze the OSI model
Network basics Unit objectives Describe the basic components of a network Identify characteristics of network technologies Analyze the OSI model Topic A Topic A: Network concepts Topic B: Network architectures
More informationObjectives. Hexadecimal Numbering and Addressing. Ethernet / IEEE LAN Technology. Ethernet
2007 Cisco Systems, Inc. All rights reserved. Cisco Public Objectives Ethernet Network Fundamentals Chapter 9 ITE PC v4.0 Chapter 1 1 Introduce Hexadecimal number system Describe the features of various
More informationA+ Guide to Managing & Maintaining Your PC, 8th Edition. Chapter 16 Networking Types, Devices, and Cabling
A+ Guide to Managing & Maintaining Your PC, Chapter 16 Networking Types, Devices, and Cabling Objectives Learn about network types and topologies Learn about the hardware used to build local networks Learn
More informationA LAN is a high-speed data network that covers a relatively small geographic area. It typically connects workstations, personal computers, printers,
CBCN4103 A LAN is a high-speed data network that covers a relatively small geographic area. It typically connects workstations, personal computers, printers, servers, and other devices. LANs offer computer
More informationObjectives. Learn how computers are connected. Become familiar with different types of transmission media
Objectives Learn how computers are connected Become familiar with different types of transmission media Learn the differences between guided and unguided media Learn how protocols enable networking 2 Objectives
More informationData and Computer Communications
Data and Computer Communications Chapter 16 High Speed LANs Eighth Edition by William Stallings Why High Speed LANs? speed and power of PCs has risen graphics-intensive applications and GUIs see LANs as
More informationChapter 6: DataLink Layer - Ethernet Olivier Bonaventure (2010)
Chapter 6: DataLink Layer - Ethernet Olivier Bonaventure (2010) 6.3.2. Ethernet Ethernet was designed in the 1970s at the Palo Alto Research Center [Metcalfe1976]. The first prototype [5] used a coaxial
More informationNetworks 15.2 Multiplexing Technologies Access Networks 15.5 Common Peripheral Interfaces
Chapter 15 Computer and Multimedia Networks 15.11 Basics of Computer and Multimedia Networks 15.2 Multiplexing Technologies 15.3 LAN and WAN 15.4 Access Networks 15.5 Common Peripheral Interfaces 15.6
More informationA+ Guide to Hardware: Managing, Maintaining, and Troubleshooting, 5e. Chapter 10 Networking Essentials
A+ Guide to Hardware: Managing, Maintaining, and Troubleshooting, 5e Chapter 10 Networking Essentials Objectives Learn about hardware devices used for networking Learn about the different types of networks
More informationInternetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on
CBCN4103 Internetworking is connecting two or more computer networks with some sort of routing device to exchange traffic back and forth, and guide traffic on the correct path across the complete network
More informationCh. 4 - WAN, Wide Area Networks
1 X.25 - access 2 X.25 - connection 3 X.25 - packet format 4 X.25 - pros and cons 5 Frame Relay 6 Frame Relay - access 7 Frame Relay - frame format 8 Frame Relay - addressing 9 Frame Relay - access rate
More informationLAN. CS 4/55231 Internet Engineering. Kent State University Dept. of Computer Science
1 CS 4/55231 Internet Engineering Kent State University Dept. of Computer Science LECT-4A4 LAN 1 2 LAN Topologies-1 In the last class we saw how two computers can connect to each other. In this class we
More informationIntroduction. High Speed LANs. Emergence of High-Speed LANs. Characteristics of High Speed LANS. Text ch. 6, High-Speed Networks and
High Speed LANs 3BA33 David Lewis 2 nd Semester 2006-07 3BA33 D.Lewis 2007 1 Characteristics of High Speed LANS 3BA33 D.Lewis 2007 3 Introduction Fast Ethernet and Gigabit Ethernet Fibre Channel High-speed
More informationA+ Guide to Hardware: Managing, Maintaining, and Troubleshooting, 5e. Chapter 10 Networking Essentials
A+ Guide to Hardware: Managing, Maintaining, and Troubleshooting, 5e Chapter 10 Networking Essentials Objectives Learn about hardware devices used for networking Learn about the different types of networks
More informationCARRIER SENSE MULTIPLE ACCESS (CSMA):
Lecture Handout Computer Networks Lecture No. 8 CARRIER SENSE MULTIPLE ACCESS (CSMA): There is no central control management when computers transmit on Ethernet. For this purpose the Ethernet employs CSMA
More informationComputer Networks and Internet
Computer Networks and Internet Objectives Computer Networks Internet 2 Computer Networks Introducing Computer Networks A computer network consists of two or more computers linked together to exchange data
More informationIntroduction to Network Technologies & Layered Architecture BUPT/QMUL
Introduction to Network Technologies & Layered Architecture BUPT/QMUL 2015-3-5 Review What is the Internet? How does it work? When & how did it come about? Who controls it? Where is it going? 2 Agenda
More informationLAN Systems. Bus topology LANs
Bus topology LANs LAN Systems Design problems: not only MAC algorithm, not only collision domain management, but at the Physical level the signal balancing problem (signal adjustment): Signal must be strong
More informationEthernet Technologies
Ethernet Technologies CCNA 1 v3 Module 7 NESCOT CATC 1 10 Mbps Ethernet Legacy Ethernet means: 10BASE5 10BASE2 10BASE-T Common features are: frame format timing parameters transmission process basic design
More informationConcept Questions Demonstrate your knowledge of these concepts by answering the following questions in the space provided.
83 Chapter 6 Ethernet Technologies and Ethernet Switching Ethernet and its associated IEEE 802.3 protocols are part of the world's most important networking standards. Because of the great success of the
More information(Network Programming) Basic Networking Hardware
EEE 448 Computer Networks with (Network Programming) Basic Networking Hardware Lecture #2 Dept of Electrical and Electronics Engineering Çukurova University Agenda What is a network device? Network Media
More informationChapter 4: Network Access
4.0.1.1 Chapter 4: Network Access To support our communication, the OSI model divides the functions of a data network into layers. Each layer works with the layers above and below to transmit data. 4.0.1.2
More informationOther Protocols. Arash Habibi Lashkari
LAN Technology Other Protocols Arash Habibi Lashkari PHD of Computer Science - Information Security July 2010 Other Protocols Outlines: FDDI: Fiber Distributed Data Interface Token Ring: IEEE 802.5 LAN
More informationInternet Architecture and Protocol
Internet Architecture and Protocol Set# 03 Local Area Networks Delivered By: Engr Tahir Niazi Layer Reference to Protocol Application Presentation Session Application FTP, Telnet, SMTP, HTTP, SNMP.. Transport
More informationLecture 6: Example LAN: Ethernet
Lecture 6: Example LAN: Ethernet Dr. Mohammed Hawa Electrical Engineering Department University of Jordan EE426: Communication Networks Network Types Local Area Networks (LANs):privately-owned networks
More informationLecture 05 Chapter 16 High Speed LANs
NET 456 High Speed Networks Lecture 05 Chapter 16 High Speed LANs Dr. Anis Koubaa Reformatted slides from textbook Data and Computer Communications, Ninth Edition by William Stallings, 1 (c) Pearson Education
More informationCHAPTER -1. Introduction to Computer Networks
CHAPTER -1 Introduction to Computer Networks PRELIMINARY DEFINITIONS computer network :: [Tanenbaum] a collection of autonomous computers interconnected by a single technology. communications network ::a
More informationEthernet. Computer Networks. Lecture 4.
Ethernet Computer Networks Lecture 4 http://goo.gl/pze5o8 The History of Ethernet Originally: DIX Ethernet (DEC-Intel-Xerox, Ethernet II) - 10Mbps. No LLC sublayer Later standardized as: IEEE 802.3 Frame
More informationNetworking Technologies and Applications
Networking Technologies and Applications Rolland Vida BME TMIT September 23, 2016 Aloha Advantages: Different size packets No need for synchronization Simple operation If low upstream traffic, the solution
More informationGoals. Fundamentals of Network Media. More topics. Topics. Multiple access communication. Multiple access solutions
Fundamentals of Network Media Local Area Networks Ursula Holmström Goals Learn the basic concepts related to LAN technologies, for example use of shared media medium access control topologies Know the
More informationComputer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and
Computer Communications and Network Basics p. 1 Overview of Computer Communications and Networking p. 2 What Does Computer Communications and Networking Technologies Mean? p. 3 What Is a Computer Network?
More informationThe following pages contain a guide for the installation
INDEX The goal of this section is to illustrate how Siemon Company products can be used to support some of the most popular and emerging networks on the market. Section Contents 100Base-T....................................
More informationChapter One: Networking Fundamentals Computer Networks
1.1 Bandwidth Bandwidth is defined as the amount of information that can flow through a network connection in a given period of time. It is important to understand the concept of bandwidth for the following
More information2. LAN Topologies Gilbert Ndjatou Page 1
2. LAN Topologies Two basic categories of network topologies exist, physical topologies and logical topologies. The physical topology of a network is the cabling layout used to link devices. This refers
More informationRaj Jain. The Ohio State University Columbus, OH
Columbus, OH 43210 Jain@CIS.Ohio-State.Edu http://www.cis.ohio-state.edu/~jain/ 3-1 Overview ISO/OSI Reference Model TCP/IP Reference Model Differences between ISO and TCP Ethernet/IEEE 802.3 LANs Interconnecting
More informationNetworks 15.2 Multiplexing Technologies Access Networks 15.5 Common Peripheral Interfaces
Chapter 15 Computer and Multimedia Networks 15.11 Basics of Computer and Multimedia Networks 15.2 Multiplexing Technologies 15.3 LAN and WAN 15.4 Access Networks 15.5 Common Peripheral Interfaces 15.6
More informationThe Internet and the World Wide Web
Technology Briefing The Internet and the World Wide Web TB5-1 Learning Objectives TB5-2 Learning Objectives TB5-3 How Did the Internet Get Started? Internet derived from internetworking 1960s U.S. Defense
More informationChapter 9. Ethernet. Part II
Chapter 9 Ethernet Part II CCNA1-1 Chapter 9-2 Note for Instructors These presentations are the result of a collaboration among the instructors at St. Clair College in Windsor, Ontario. Thanks must go
More informationCSIS Frequency Division Multiplexing. Basic Types of Multiplexing. Frequency Division Multiplexing. Frequency Division Multiplexing.
Multiplexing: combining information streams from multiple sources for transmission over a shared medium Demultiplexing: separating a combination back into individual information streams CSIS 4222 Ch 11:
More informationIEEE standards for local area networks
IEEE standards for local area networks Telecommunication Networks Group firstname.lastname@polito.it http://www.telematica.polito.it/ COMPUTER NETWORKS Standard for LANs 1 Copyright Quest opera è protetta
More informationECE 333: Introduction to Communication Networks Fall Lecture 19: Medium Access Control VII
ECE : Introduction to Communication Networks Fall 2002 Lecture 9: Medium Access Control VII More on token ring networks LAN bridges and switches. More on token rings In the last lecture we began discussing
More informationIT 4504 Section 4.0. Network Architectures. 2008, University of Colombo School of Computing 1
IT 4504 Section 4.0 Network Architectures 2008, University of Colombo School of Computing 1 Section 4.1 Introduction to Computer Networks 2008, University of Colombo School of Computing 2 Introduction
More informationChapter 12. Network Organization and Architecture
Chapter 12 Network Organization and Architecture Chapter 12 Objectives Learn the basic physical components of networks. Become familiar with routing protocols. 2 Computer networks are often classified
More informationData Link Protocols. TCP/IP Suite and OSI Reference Model
Data Link Protocols Relates to Lab. This module covers data link layer issues, such as local area networks (LANs) and point-to-point links, Ethernet, and the Point-to-Point Protocol (PPP). 1 TCP/IP Suite
More informationLocal Area Network Overview
Local Area Network Overview Chapter 15 CS420/520 Axel Krings Page 1 LAN Applications (1) Personal computer LANs Low cost Limited data rate Back end networks Interconnecting large systems (mainframes and
More informationMore on LANS. LAN Wiring, Interface
More on LANS Chapters 10-11 LAN Wiring, Interface Mostly covered this material already NIC = Network Interface Card Separate processor, buffers incoming/outgoing data CPU might not be able to keep up network
More informationNetwork Media and Layer 1 Functionality
Network Media and Layer 1 Functionality BSAD 146 Dave Novak Dean, Chapter 3, pp 93-124 Objectives Introduction to transmission media Basic cabling Coaxial Twisted pair Optical fiber Basic wireless (NIC)
More informationModule 5. Broadcast Communication Networks. Version 2 CSE IIT, Kharagpur
Module 5 Broadcast Communication Networks Lesson 5 High Speed LANs Token Ring Based Specific Instructional Objectives On completion, the student will be able to: Explain different categories of High Speed
More informationMultiplexing (Recap)
Multiplexing (Recap) Multiplexing How to transfer data between two sites once there is a digital link between them? Analog to Digital (A2D) conversion Human voice is a continuous signal in the range 0-4
More informationData Communication. Introduction of Communication. Data Communication. Elements of Data Communication (Communication Model)
Data Communication Introduction of Communication The need to communicate is part of man s inherent being. Since the beginning of time the human race has communicated using different techniques and methods.
More informationCS 416: Operating Systems Design April 11, 2011
Modes of connection Operating Systems Design 3. Client-Server Networking Paul Krzyzanowski pxk@cs.rutgers.edu Circuit-switched dedicated path guaranteed (fixed) bandwidth [almost] constant latency Packet-switched
More informationData Communication Prof. A. Pal Department of Computer Science and Engineering Indian Institute of Technology, Kharagpur Lecture # 29 High Speed LANs
Data Communication Prof. A. Pal Department of Computer Science and Engineering Indian Institute of Technology, Kharagpur Lecture # 29 High Speed LANs Hello and welcome to today s lecture on high speed
More informationITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
More informationEthernet Basics. based on Chapter 4 of CompTIA Network+ Exam Guide, 4 th ed., Mike Meyers
Ethernet Basics based on Chapter 4 of CompTIA Network+ Exam Guide, 4 th ed., Mike Meyers Ethernet Basics History Ethernet Frames CSMA/CD Obsolete versions 10Mbps versions Segments Spanning Tree Protocol
More informationLocal Area Network(LAN)
Local Area Network(LAN) A local area network (LAN) is a computer network that interconnects computers within a limited area. Example: a residence, school, laboratory, university campus,office building
More informationRedes de Computadores (RCOMP)
Redes de Computadores (RCOMP) Lecture 03 2017/2018 Ethernet local area network technologies. Virtual local area networks (VLAN). Wireless local area networks. Instituto Superior de Engenharia do Porto
More informationend systems, access networks, links circuit switching, packet switching, network structure
Introduction Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge end systems, access networks, links 1.3 Network core circuit switching, packet switching, network structure 1.4 Delay, loss and
More informationET4254 Communications and Networking 1
Topic 10:- Local Area Network Overview Aims:- LAN topologies and media LAN protocol architecture bridges, hubs, layer 2 & 3 switches 1 LAN Applications (1) personal computer LANs low cost limited data
More informationTYPES OF COMPUTER NETWORKS
TYPES OF COMPUTER NETWORKS What is a Network? A network consists of two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications.
More informationComputer Networks. Lecture 8 Local Area Network, IEEE 802.x
Computer Networks Lecture 8 Local Area Network, IEEE 802.x Local area network A local area network (LAN) is a computer network that interconnects computers within a limited area such as a home, school,
More informationM242 COMPUTER NETWORS AND SECURITY
M242 COMPUTER NETWORS AND SECURITY 2.1. Network Models: UNIT - II OSI MODEL AND LAN PROTOCOLS 1. Explain Network model A network is a combination of hardware and software that sends data from one location
More informationLecture 6 Datalink Framing, Switching. From Signals to Packets
Lecture 6 Datalink Framing, Switching David Andersen Department of Computer Science Carnegie Mellon University 15-441 Networking, Spring 2005 http://www.cs.cmu.edu/~srini/15-441/s05/ 1 From Signals to
More informationIntroduction to Networking Devices
Introduction to Networking Devices Objectives Explain the uses, advantages, and disadvantages of repeaters, hubs, wireless access points, bridges, switches, and routers Define the standards associated
More informationCOMPUTER SKILLS COMP101
COMPUTER SKILLS COMP101 Chapter 4 Introduction to Computer Networks Definitions and Terminologies Computer Network A network consists of two or more computers that are linked in order to share resources
More informationCCNA Exploration Network Fundamentals. Chapter 09 Ethernet
CCNA Exploration Network Fundamentals Chapter 09 Ethernet Updated: 07/07/2008 1 9.0.1 Introduction 2 9.0.1 Introduction Internet Engineering Task Force (IETF) maintains the functional protocols and services
More informationLecture 8: Switched Ethernet and Collision Domains
Lecture 8: Switched Ethernet and Collision Domains Dr. Mohammed Hawa Electrical Engineering Department University of Jordan EE426: Communication Networks Ethernet Installations 2 1 Twisted Pair and Fiber
More informationThe random access methods we study in this chapter have evolved from a very interesting protocol known as ALOHA, which used a very simple procedure
Multiple Accesses When nodes or stations are connected and use a common link, called a multipoint or broadcast link, we need a multiple-access protocol to coordinate access to the link. The problem of
More informationITP 140 Mobile Applications Technologies. Networks
ITP 140 Mobile Applications Technologies Networks A First Look Under the Hood 2 3 Communication Channels Mediums for transporting data from one system to another Physical Twisted Pair (CAT-3, CAT-5/6)
More informationEthernet Standard. Campus Network Design. Ethernet address. OSI Model. Thana Hongsuwan
Campus etwork Design Thana Hongsuwan Ethernet Standard 2003, Cisco Systems, Inc. All rights reserved. 1-1 2003, Cisco Systems, Inc. All rights reserved. BCMS v2.0 1-2 OSI Model Ethernet address Six bytes
More informationLocal Area Networks. Aloha Slotted Aloha CSMA (non-persistent, 1-persistent, p-persistent) CSMA/CD Ethernet Token Ring
Local Area Networks Aloha Slotted Aloha CSMA (non-persistent, 1-persistent, p-persistent) CSMA/CD Ethernet Token Ring Networks: Local Area Networks 1 Network Layer Network Layer LLC 802.2 Logical Link
More informationKIBABII UNIVERSITY COLLEGE DEPARTMENT COMPUTER SCIENCE & IT ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO QUESTIONS IN SECTION B
KIBABII UNIVERSITY COLLEGE DEPARTMENT COMPUTER SCIENCE & IT TITLE: DATACOMMUNICATION COURSE CODE: 223 SECTION A: 30 Marks ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO QUESTIONS IN SECTION B TIME ALLOWED:
More informationTCP/IP and OSI Model Ethernet LAN Network Cables Network Devices Network Topologies Redundant Internet Connections VLANs Wireless LANs Upcoming
2 TCP/IP and OSI Model Ethernet LAN Network Cables Network Devices Network Topologies Redundant Internet Connections VLANs Wireless LANs Upcoming Network Technologies 3 4 Elements of the Network Sender
More informationChapter Seven. Local Area Networks: Part 1. Data Communications and Computer Networks: A Business User s Approach Seventh Edition
Chapter Seven Local Area Networks: Part 1 Data Communications and Computer Networks: A Business User s Approach Seventh Edition After reading this chapter, you should be able to: State the definition of
More informationCCNA Exploration1 Chapter 7: OSI Data Link Layer
CCNA Exploration1 Chapter 7: OSI Data Link Layer LOCAL CISCO ACADEMY ELSYS TU INSTRUCTOR: STELA STEFANOVA 1 Explain the role of Data Link layer protocols in data transmission; Objectives Describe how the
More informationCOMMUNICATIONS AND NETWORKS
COMMUNICATIONS AND NETWORKS Data Communications Data communications describes a process in which one computer transfers data, instructions, and information to another computer. The basic model for data
More informationThis PDF document is a sample chapter from the book...
This PDF document is a sample chapter from the book... To order this book, print the last page of this document. Copyright 2001 Society of Manufacturing Engineers Chapter 37 Manufacturing Networks 37.1
More informationChapter 8 LAN Topologies
Chapter 8 LAN Topologies Point-to-Point Networks In a Point-to-Point network, each wire connects exactly two computers Point To Point Link Machine A Machine B Figure 1: Each line connects two machines
More information2. Review of Information Network and Technology
2. Review of Information Network and Technology Objectives Network components and technologies to be managed: o o o o o o Network topologies: LAN and WAN Wired LAN topology: Bus, Ring, Star, and Hybrid
More information1/29/2008. From Signals to Packets. Lecture 6 Datalink Framing, Switching. Datalink Functions. Datalink Lectures. Character and Bit Stuffing.
/9/008 From Signals to Packets Lecture Datalink Framing, Switching Peter Steenkiste Departments of Computer Science and Electrical and Computer Engineering Carnegie Mellon University Analog Signal Digital
More informationThe Internet software layers
1 2 The Internet software layers SMTP, Telnet, FTP, POP3, IMAP TCP, UDP IP: RIP, BGP, OSPF Ethernet, Wireless LAN, Token Ring Twisted pair, coaxial, microwave, optical fiber 3 4 Ethernet 1973 Xerox s researcher
More informationIT220 Network Standards & Protocols. Unit 4: Chapter 4 Transmitting Bits
1 IT220 Network Standards & Protocols Unit 4: Chapter 4 Transmitting Bits Objectives Differentiate among major types of LAN and WAN technologies and specifications and determine how each is used in a data
More informationWAN Technology & Design. Dr. Nawaporn Wisitpongphan
WAN Technology & Design Dr. Nawaporn Wisitpongphan 1 WAN Connection Modules 2 WAN Comparison 3 Integrated Services Digital Network (ISDN) All-digital phone line connection Technology since 1980s Allow
More informationCampus Network Design
Campus Network Design Thana Hongsuwan 2003, Cisco Systems, Inc. All rights reserved. 1-1 Content Ethernet Standard Transparent Bridges LAN Switches LAN and Switch Operation Loop Resolution Virtual LANs,
More informationExperiment # 2 Transmission Media & Networking Components
Experiment # 2 Transmission Media & Networking Components Objectives: Study different types of networking cables, connectors and other network components. Transmission Media (refer to text book, sec 3.7)
More information06/02/2006. Local & Metropolitan Area Networks 1. INTRODUCTION. Why Study Local and Metropolitan Area Networks? ACOE322. Lecture 1 Introduction
Local & Metropolitan Area Networks ACOE322 Lecture 1 Introduction 1 1. INTRODUCTION In this section we will cover : 1. Overview of data communications and networking 2. Definition and overview of LANs,
More informationReview For Exam 2. Internetworking. Summary Questions. School of Business Eastern Illinois University. School of Business Eastern Illinois University
School of Business Review For Exam 2 Wednesday 10/6/2004) Abdou Illia, Fall 2004 School of Business Internetworking 3 1. Name the two most known Medium Access Control Protocols found in LANs. How they
More informationIntroduction to LAN Protocols
CHAPTER 2 Chapter Goals Learn about different LAN protocols. Understand the different methods used to deal with media contention. Learn about different LAN topologies. This chapter introduces the various
More informationBROADBAND AND HIGH SPEED NETWORKS
BROADBAND AND HIGH SPEED NETWORKS INTRODUCTION TO DATA COMMUNICATION NETWORKS Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable.
More information1: Review Of Semester Provide an overview of encapsulation.
1: Review Of Semester 1 1.1.1.1. Provide an overview of encapsulation. Networking evolves to support current and future applications. By dividing and organizing the networking tasks into separate layers/functions,
More informationCOMPONENTS OF DATA COMMUNICATION
COMPONENTS OF DATA COMMUNICATION ANALOG AND DIGITAL TRANSMISSION An analog signal is one that is continuous with respect to time and may take on any value within a given range of values. Eg Human voice.
More informationChapter 15 Computer and Multimedia Networks
Chapter 15 Computer and Multimedia Networks 15.1 Basics of Computer and Multimedia Networks 15.2 Multiplexing Technologies 15.3 LAN and WAN 15.4 Access Networks 15.5 Common Peripheral Interfaces 15.6 Further
More informationChapter 14: Introduction to Networking
Chapter 14: Introduction to Networking Complete CompTIA A+ Guide to PCs, 6e How different networks are wired (or wireless) How to identify common network cables How Ethernet works About the OSI and TCP/IP
More information