Broadband ATM networks
|
|
- Sharyl Bryan
- 7 years ago
- Views:
Transcription
1 Broadband ATM networks 10.1 Introduction Broadband ISDN (B-ISDN) was designed to support multimedia communication applications. The source information associated with each call is first converted into small fixed-sized packets known as cells. Instead of allocating a fixed portion of transmission bandwidth per call, the cell streams relating to different calls are multiplexed together on a statistical basis. The switching units then operate using a form of packet switching called cell switching. Small fixed-sized cell switches can operate at a much higher rate than variable-length packet switches and hence it is known as fast packet switching. In order to keep the header of a cell small, the connection-oriented mode instead of the connectionless mode is used. A unique identifier called as virtual circuit identifier (VCI) is assigned to the call on each line making up the virtual circuit as a virtual circuit is set up. In order to make a compromise between packet delay and relative overheads, a cell comprises a 48-byte payload (information) field and a 5-byte header for the VCI and other fields. No error control is performed and hence no sequence numbers are required for retransmission purposes. The header contains error check bits for error detection. An optical fiber access network is used to connect subscriber premises to the core network as the bit rate is expected to be high. The cells relating to different calls have varying time intervals between them during both transmission and switching and hence this mode of operation is known as the asynchronous transfer mode (ATM). Networks operate in this way is called ATM networks. CYH/MMT/ATM/p.1 CYH/MMT/ATM/p.2
2 10.2 Cell format and switching principles In an ATM network, the virtual circuit identifier used on each link is known as the protocol connection identifier (PCI). Associated with each incoming link/port is a routing table that contains, for each incoming PCI, the corresponding outgoing link route and the new PCI to be used. The routing of cells is very fast as it involves a simple look-up operation. The PCI is made up of 2 field: a virtual path identifier (VPI) and a virtual channel identifier (VCI). Routing can be performed using either one or a combination of the two. Example of the use of virtual path switching: multiple calls originating at the same network entry point are all intended for the same destination. Example of the use of virtual channel switching: each call at the network entry point is intended for a different destination. CYH/MMT/ATM/p.3 CYH/MMT/ATM/p.4
3 Format of a cell: Generic flow control (GFC): enables a local switch to flow control the entry of cells by a user into the network. Virtual path identifier (VPI): used for identification/routing purposes within the network. Virtual channel identifier (VCI): used for identification/routing purposes within the network. Payload type identifier (PTI) indicates the type of information carried in the cell. Cell loss priority (CLP): enable a user to specify a preference as to which cells should be discarded during heavy load conditions. Header error checksum (HEC): error detection for the header CYH/MMT/ATM/p.5 CYH/MMT/ATM/p.6
4 10.3 Switch architectures This involves a simple look-up and mapping operation of the VPI/VCI in the header of the incoming cell into the corresponding output VPI/VCI. Buffering is provided by either the input controllers or the output controller to handle the case that more than 1 cells arrive at the different input ports for the same output port. Output controllers simply forward received cells at the appropriate bit rate. The main role of the control processor is to download routing information into routing tables in each input controller. The control processor may generate network management messages itself. The switch fabrics used in ATM switches can be classified as either time division or space division. In a time-division switch, a time-division backplane bus that is capable of transferring N cells, where N is the number of input ports, in a single cell arrival time. Each input link is terminated by an input controller (IC) which performs the routing of cells arriving at each link (port) to their required output link. In a space-division switch the switch fabric comprises a matrix of interconnected switching elements that collectively provide a number of alternative paths through the network. CYH/MMT/ATM/p.7 CYH/MMT/ATM/p.8
5 The matrix is known as a fully-connected switch matrix. To avoid internal queuing with this type of switch the cell transfer operation must be performed N times faster than the cell arrival rate, where is the number of input ports. No additional buffering is required within the switching matrix and the switch is said to be internally nonblocking. Ways of overcoming blocking: Discard cells Perform the switching operation several times faster than the cell arrival rate Introduce buffering Others Most practical matrix switch designs use multiple switching stages, each made up of a number of smaller switching elements interconnected in a regular matrix. This type of switching fabric is blocking. CYH/MMT/ATM/p.9 CYH/MMT/ATM/p.10
Lecture Computer Networks
Lecture Computer Networks Prof. Dr. Hans Peter Großmann mit M. Rabel sowie H. Hutschenreiter und T. Nau Sommersemester 2012 Institut für Organisation und Management von Informationssystemen Asynchronous
More informationOverview of Asynchronous Transfer Mode (ATM) and MPC860SAR. For More Information On This Product, Go to: www.freescale.com
Overview of Asynchronous Transfer Mode (ATM) and MPC860SAR nc. 2 What is ATM? o Protocol that applies primarily to layer 2 of the OSI protocol stack: Application Presentation Session Transport Network
More informationFrame Relay and Frame-Based ATM: A Comparison of Technologies
White Paper and -Based : A Comparison of Technologies Larry Greenstein Nuera Communications VP, Technology, Forum June 1995 June 27, 1995 i TABLE OF CONTENTS 1. PREFACE...1 2. INTRODUCTION...1 3. INTERWORKING
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 informationATM. Asynchronous Transfer Mode. Networks: ATM 1
ATM Asynchronous Transfer Mode Networks: ATM 1 Issues Driving LAN Changes Traffic Integration Voice, video and data traffic Multimedia became the buzz word One-way batch Two-way batch One-way interactive
More informationCS 5516 Computer Architecture Networks
Lecture 11: ISDN & ATM CS 5516 Computer Architecture Networks VA Tech Prof. Roy M. Wnek History of ISDN Traditionally, local loop connectivity has been with an analog signal on copper Inefficient, prone
More informationModule 4. Switched Communication Networks. Version 2 CSE IIT, Kharagpur
Module 4 Switched Communication Networks Lesson 6 Asynchronous Transfer Mode Switching (ATM) Specific Instructional Objectives On completion on this lesson, the student will be able to: State the need
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 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 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 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 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 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 informationCTS2134 Introduction to Networking. Module 07: Wide Area Networks
CTS2134 Introduction to Networking Module 07: Wide Area Networks WAN cloud Central Office (CO) Local loop WAN components Demarcation point (demarc) Consumer Premises Equipment (CPE) Channel Service Unit/Data
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 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 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 informationRouter Architectures
Router Architectures An overview of router architectures. Introduction What is a Packet Switch? Basic Architectural Components Some Example Packet Switches The Evolution of IP Routers 2 1 Router Components
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 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 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 informationPART III. OPS-based wide area networks
PART III OPS-based wide area networks Chapter 7 Introduction to the OPS-based wide area network 7.1 State-of-the-art In this thesis, we consider the general switch architecture with full connectivity
More informationSwitch Fabric Implementation Using Shared Memory
Order this document by /D Switch Fabric Implementation Using Shared Memory Prepared by: Lakshmi Mandyam and B. Kinney INTRODUCTION Whether it be for the World Wide Web or for an intra office network, today
More informationWhite Paper Abstract Disclaimer
White Paper Synopsis of the Data Streaming Logical Specification (Phase I) Based on: RapidIO Specification Part X: Data Streaming Logical Specification Rev. 1.2, 08/2004 Abstract The Data Streaming specification
More information920-803 - technology standards and protocol for ip telephony solutions
920-803 - technology standards and protocol for ip telephony solutions 1. Which CODEC delivers the greatest compression? A. B. 711 C. D. 723.1 E. F. 726 G. H. 729 I. J. 729A Answer: C 2. To achieve the
More informationData Communication Networks and Converged Networks
Data Communication Networks and Converged Networks The OSI Model and Encapsulation Layer traversal through networks Protocol Stacks Converged Data/Telecommunication Networks From Telecom to Datacom, Asynchronous
More informationIn this lecture we will start our discussion on another very important technology, namely, Asynchronous Transfer Mode or ATM.
Computer networks Prof: Sujoy Ghosh Department of Computer Science and Engineering Indian Institute of Technology, Kharagpur Lecture No. 24 ATM: Asynchronous Transfer Mode In this lecture we will start
More informationProtocols. Packets. What's in an IP packet
Protocols Precise rules that govern communication between two parties TCP/IP: the basic Internet protocols IP: Internet Protocol (bottom level) all packets shipped from network to network as IP packets
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 informationEncapsulating Voice in IP Packets
Encapsulating Voice in IP Packets Major VoIP Protocols This topic defines the major VoIP protocols and matches them with the seven layers of the OSI model. Major VoIP Protocols 15 The major VoIP protocols
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 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 informationHow To Understand The Concept Of Circuit Switching
Module 2 Communication Switching Lesson 2 Circuit Switching INSTRUCTIONAL OBJECTIVES GENERAL This lesson is aimed at developing the concept and application of circuit switching which is a very important
More information3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET
3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET The Business Value of Telecommunications and Networking Business value impacts of the telecommunications and Networking are: Declining transaction costs
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 information52-10-10 Asynchronous Transfer Mode Switching Nathan J. Muller
52-10-10 Asynchronous Transfer Mode Switching Nathan J. Muller Payoff Ultimately, the integration of ATM switching and routing will support large-scale multimedia internetworks. Increased bandwidth, low
More informationBasic Networking Concepts. 1. Introduction 2. Protocols 3. Protocol Layers 4. Network Interconnection/Internet
Basic Networking Concepts 1. Introduction 2. Protocols 3. Protocol Layers 4. Network Interconnection/Internet 1 1. Introduction -A network can be defined as a group of computers and other devices connected
More informationIt explains the differences between the Plesiochronous Digital Hierarchy and the Synchronous Digital Hierarchy.
TECHNICAL TUTORIAL Subject: SDH Date: October, 00 Prepared by: John Rumsey SDH Synchronous Digital Hierarchy. Introduction. The Plesiochronous Digital Hierarchy (PDH). The Synchronous Digital Hierarchy
More informationTELECOMMUNICATION SYSTEMS AND TECHNOLOGIES - Vol. I - Analog and Digital Switching - Wojciech Kabaciński
ANALOG AND DIGITAL SWITCHING Wojciech Kabaciński Poznan University of Technology, Poland Keywords: switching, analog switching, digital switching, switching node, switching networks, multistage interconnection
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 informationAE64 TELECOMMUNICATION SWITCHING SYSTEMS
Q2. a. Draw the schematic of a 1000 line strowger switching system and explain how subscribers get connected. Ans: (Page: 61 of Text book 1 and 56 of Text book 2) b. Explain the various design parameters
More informationInterconnection Networks. Interconnection Networks. Interconnection networks are used everywhere!
Interconnection Networks Interconnection Networks Interconnection networks are used everywhere! Supercomputers connecting the processors Routers connecting the ports can consider a router as a parallel
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 informationICS 153 Introduction to Computer Networks. Inst: Chris Davison cbdaviso@uci.edu
ICS 153 Introduction to Computer Networks Inst: Chris Davison cbdaviso@uci.edu 1 ICS 153 Introduction to Computer Networks Course Goals Understand the basic principles of computer networks Design Architecture
More informationEthernet. Ethernet. Network Devices
Ethernet Babak Kia Adjunct Professor Boston University College of Engineering ENG SC757 - Advanced Microprocessor Design Ethernet Ethernet is a term used to refer to a diverse set of frame based networking
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 informationIntroduction to Wide Area Network Protocols
1 Introduction to Wide Area Network Protocols Session 2 Agenda Wide Area Network (WAN) Environment Requirements Technologies Interface Signaling Protocols 3 Take-Away Message By selecting the right cache
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 informationQoS Parameters. Quality of Service in the Internet. Traffic Shaping: Congestion Control. Keeping the QoS
Quality of Service in the Internet Problem today: IP is packet switched, therefore no guarantees on a transmission is given (throughput, transmission delay, ): the Internet transmits data Best Effort But:
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 informationProtocol Overhead in IP/ATM Networks
Protocol Overhead in IP/ATM Networks John David Cavanaugh * Minnesota Supercomputer Center, Inc. This paper discusses the sources of protocol overhead in an IP/ATM protocol stack. It quantifies the amount
More informationBy: Mohsen Aminifar Fall 2014
By: Mohsen Aminifar Fall 2014 Contact Information: E-Mail: m.aminifar@modares.ac.ir admin@parsenet.ir Phone : 021-22919726 09128442885 Website : http://parsenet.ir http://aminifar.ir SMS Center : 5000262175
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 informationDESIGN AND VERIFICATION OF LSR OF THE MPLS NETWORK USING VHDL
IJVD: 3(1), 2012, pp. 15-20 DESIGN AND VERIFICATION OF LSR OF THE MPLS NETWORK USING VHDL Suvarna A. Jadhav 1 and U.L. Bombale 2 1,2 Department of Technology Shivaji university, Kolhapur, 1 E-mail: suvarna_jadhav@rediffmail.com
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 informationNZQA Expiring unit standard 6857 version 4 Page 1 of 5. Demonstrate an understanding of local and wide area computer networks
Page 1 of 5 Title Demonstrate an understanding of local and wide area computer networks Level 7 Credits 10 Purpose People credited with this unit standard are able to: describe network types and standards;
More informationQuality of Service in the Internet. QoS Parameters. Keeping the QoS. Traffic Shaping: Leaky Bucket Algorithm
Quality of Service in the Internet Problem today: IP is packet switched, therefore no guarantees on a transmission is given (throughput, transmission delay, ): the Internet transmits data Best Effort But:
More informationImplementing VoIP support in a VSAT network based on SoftSwitch integration
Implementing VoIP support in a VSAT network based on SoftSwitch integration Abstract Satellite communications based on geo-synchronous satellites are characterized by a large delay, and high cost of resources.
More informationAn ATM WAN/LAN Gateway Architecture
An ATM WAN/LAN Gateway Architecture Gary J. Minden, Joseph B. Evans, David W. Petr, Victor S. Frost Telecommunications & Information Sciences Laboratory Department of Electrical & Computer Engineering
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 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 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 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 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 informationComputer Organization & Architecture Lecture #19
Computer Organization & Architecture Lecture #19 Input/Output The computer system s I/O architecture is its interface to the outside world. This architecture is designed to provide a systematic means of
More informationLong Distance Connection and WAN
Lecture 6 Long Distance Connection and WAN Digital Telephone, PCM and Nyquist Sampling Theorem DSU/CSU, T Line Series and OC line Series Local Loop DSL Technologies - ADSL, HDSL, SDSL, VDSL Cable Modem
More informationConnection Services. Hakim S. ADICHE, MSc
Connection Services Hakim S. ADICHE, MSc adiche@ccse.kfupm.edu.sa Department of Computer Engineering King Fahd University of Petroleum and Minerals Dhahran, Saudi Arabia Connection Services Different connectivity
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 informationQuality of Service Analysis of site to site for IPSec VPNs for realtime multimedia traffic.
Quality of Service Analysis of site to site for IPSec VPNs for realtime multimedia traffic. A Network and Data Link Layer infrastructure Design to Improve QoS in Voice and video Traffic Jesús Arturo Pérez,
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 informationOverview. Securing TCP/IP. Introduction to TCP/IP (cont d) Introduction to TCP/IP
Overview Securing TCP/IP Chapter 6 TCP/IP Open Systems Interconnection Model Anatomy of a Packet Internet Protocol Security (IPSec) Web Security (HTTP over TLS, Secure-HTTP) Lecturer: Pei-yih Ting 1 2
More informationDatagram-based network layer: forwarding; routing. Additional function of VCbased network layer: call setup.
CEN 007C Computer Networks Fundamentals Instructor: Prof. A. Helmy Homework : Network Layer Assigned: Nov. 28 th, 2011. Due Date: Dec 8 th, 2011 (to the TA) 1. ( points) What are the 2 most important network-layer
More informationNetwork Traffic Monitoring an architecture using associative processing.
Network Traffic Monitoring an architecture using associative processing. Gerald Tripp Technical Report: 7-99 Computing Laboratory, University of Kent 1 st September 1999 Abstract This paper investigates
More informationISTANBUL. 1.1 MPLS overview. Alcatel Certified Business Network Specialist Part 2
1 ISTANBUL 1.1 MPLS overview 1 1.1.1 Principle Use of a ATM core network 2 Overlay Network One Virtual Circuit per communication No routing protocol Scalability problem 2 1.1.1 Principle Weakness of overlay
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 informationVoice and Delivery Data Networks
Voice and Delivery Data Networks Chapter 11 Learning Objectives After reading this chapter, you should be able to: Identify the basic elements of a telephone system Describe the composition of the telephone
More information52-20-05 The Virtues of Narrowband ATM Daniel A. Kosek James P. Cavanagh
Previous screen 52-20-05 The Virtues of Narrowband ATM Daniel A. Kosek James P. Cavanagh Payoff When deciding on a transport technology, network administrators should consider the enhanced network performance
More informationSwitching Technology S38.165
Switching Technology S38.165 Pertti Raatikainen, research professor VTT Information Technology pertti.raatikainen@vtt.fi L1-1 General Lecturer: Pertti Raatikainen, research professor /VTT email: pertti.raatikainen@vtt.fi
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 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 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 informationSoftware Defined Networking (SDN) - Open Flow
Software Defined Networking (SDN) - Open Flow Introduction Current Internet: egalitarian routing/delivery based on destination address, best effort. Future Internet: criteria based traffic management,
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 informationLeased Line + Remote Dial-in connectivity
Leased Line + Remote Dial-in connectivity Client: One of the TELCO offices in a Southern state. The customer wanted to establish WAN Connectivity between central location and 10 remote locations. The customer
More informationNetwork administrators must be aware that delay exists, and then design their network to bring end-to-end delay within acceptable limits.
Delay Need for a Delay Budget The end-to-end delay in a VoIP network is known as the delay budget. Network administrators must design a network to operate within an acceptable delay budget. This topic
More informationCombination of Packet Switching and Circuit Switching In the upcoming Computer Networks
Combination of Packet Switching and Circuit Switching In the upcoming Computer Networks M H Pradeep Kumar Asst. Professor, Dept of ECE, BIT Institute of Technology, Hindupur, India ABSTRACT: With the combination
More informationMetropolitan Area Networks
Metropolitan Area Networks Bridge larger distances than a LAN, usage e.g. within the city range or on a campus. Only one or two cables, no switching elements. Thus a simple network design is achieved.
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 informationCOMMUNICATION NETWORKS WITH LAYERED ARCHITECTURES. Gene Robinson E.A.Robinsson Consulting 972 529-6395 ROB1200@aol.com
COMMUNICATION NETWORKS WITH LAYERED ARCHITECTURES Gene Robinson E.A.Robinsson Consulting 972 529-6395 ROB1200@aol.com 9 March 1999 IEEE802 N-WEST STANDARDS MEETING FOR BROADBAND WIRELESS ACCESS SYSTEMS
More information1 " %&#'(&#'(&#'(#' ( $) ) *+$ - 0# ,.+ ! "
1 " ' ' #$ %&#'(&#'(&#'(#' ( $) ) $) &$ *+$ $,-+$.,/&./ $$ - 0# 2,.+! " #$+$3 4.,')5, "! 2 #$7 4.,')5, "! 6 937! 8 &;#'(&#' 4.,')5, "! : &$! < *&$;! = $ X.21 Cell switching - works with cells (packets)
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 informationRemoving Cell Demultiplexing Performance Bottleneck in ATM Pseudo Wire Emulation over MPLS Networks 1 Introduction
1 Removing Cell Demultiplexing Performance Bottleneck in ATM Pseudo Wire Emulation over MPLS Networks Puneet Konghot and Hao Che {pxk7783@omega.uta.edu, hche@cse.uta.edu} The Department of Computer Science
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 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 informationCustomer Interface Publication: CIP024
Customer Interface Publication: CIP024 KCOM Group PLC DataLine Access Service Description and Technical Characteristics Issue: Version 1.2 April 2016 The information in this document is provided in accordance
More informationCourse 1. General view on the fixed telephone network. Digital networks. General aspects. Definitions.
Course 1. General view on the fixed telephone network. Digital networks. General aspects. Definitions. 1. General view on the fixed telephone network Communication network dedicated to voice transmission;
More informationLecture 2: Protocols and Layering. CSE 123: Computer Networks Stefan Savage
Lecture 2: Protocols and Layering CSE 123: Computer Networks Stefan Savage Last time Bandwidth, latency, overhead, message size, error rate Bandwidth-delay product Delay Bandwidth High-level run through
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 informationChapter 11. User Datagram Protocol (UDP)
Chapter 11 User Datagram Protocol (UDP) The McGraw-Hill Companies, Inc., 2000 1 CONTENTS PROCESS-TO-PROCESS COMMUNICATION USER DATAGRAM CHECKSUM UDP OPERATION USE OF UDP UDP PACKAGE The McGraw-Hill Companies,
More informationPART OF THE PICTURE: The TCP/IP Communications Architecture
PART OF THE PICTURE: The / Communications Architecture 1 PART OF THE PICTURE: The / Communications Architecture BY WILLIAM STALLINGS The key to the success of distributed applications is that all the terminals
More information