CPEG 514. Lecture 11 Asynchronous Transfer Mode (ATM) CPEG 514
|
|
- Kristina Lloyd
- 6 years ago
- Views:
Transcription
1 Lecture 11 Asynchronous Transfer Mode ()
2 Outline Introduction Virtual Circuit Setup PVC vs. SVC Quality of Service and Congestion Control IP over and Frame Relay interworking
3 Network (integrated voice, video, and data services) Private Carrier to carrier Is not really common Integrated via IP
4 Standards ITU-T, Forum, IETF User-to-Network Interface (UNI) 2.0 UNI 3.0, UNI 3.1, UNI 4.0 Network-to-Network Interface (NNI) PNNI Private NNI Public-Network Node Interface RFC 2684 (Multiprotocol encapsulation over ) LAN Emulation (LANE) Multiprotocol over (MPoA)
5 Synchronous vs. Asynchronous - cell switching technology (asynchronous) NO clock synch between xmt/rcv TDM circuit switching technology (synchronous) clock synch between xmt/rcv is more efficient than TDM. (why?) TDM: dedicated time slots. : time slots are available on demand with information identifying the destination address of the transmission contained in the header of each cell.
6 Network Components? Network If i/f is not, the switch would have to do the interworking function
7 PCI NIC ( to the desktop) OC-3c OC-3 155Mbps Network Price: $605 (cf. how much is Gigabit-E NIC?) 330d316d317d314d315 Q: is there still a market for to the desktop? why? Ethernet is cheaper even at the Gbps, 1Gb Ethernet = $30, 100 BaseT = $7-10
8 UNI, PNNI, and NNI PNNI NNI? Is there a public? Is there a public Frame Relay? Private NNI (PNNI): connecting two private networks through a public one. or Inside the same carrier s network
9 Cell Format
10 Cell Format Generic Flow Control (GFC) typically not used. Virtual Path Identifier (VPI) 8 (UNI) or 12 (NNI) bits Virtual Channel Identifier (VCI) 16 bits Payload Type (PT) 3 bits first bit: user data (0) or control data (1) second bit: Congestion Indicator 0 = no congestion, 1 = congestion), Set to 1 if pkt encountered congestion third bit: whether the cell is the last cell (1) in a series of AAL5 frame Cell Loss Priority (CLP) Indicates whether the cell should be discarded (1) if it encounters extreme congestion as it moves through the network. Similar to - DE (Discard Eligibility in Frame Relay) Header Error Control (HEC) checksum on the first 4 bytes of the header.
11 PVC and SVC PVC (permanent virtual circuit ) allows direct connectivity between sites, and is similar to a leased line. +++ guarantees availability of a connection +++ does not require call setup procedures between switches. --- requires manual setup between the source and the destination. --- no network resiliency/flexibility is available with PVC. SVC (Switched virtual circuits) is created and released dynamically and remains in use only as long as data is being transferred. In this sense, it is similar to a telephone call. Dynamic call control requires a signaling protocol between the endpoint and the switch. +++ connection flexibility +++ call setup that can be handled automatically by a networking device. --- the extra time and overhead required to set up the connection. --- network management and trouble shooting due to dynamic nature of SVC
12 Virtual Connections switching is based on VPI/VCI However, VPI+VPI is not called address. VPI/VCI has local significance only at the port level of the switch.
13 Physical Layer over T1 over multiple T1 - Inverse Multiplexing over (IMA) Up 8 T1s as one link using IMA over DS3, OC-3, OC-12, OC-48, and OC Note: Marconi bought Fore Switch in Q; What is the max speed for Frame Relay? Up to 30Mbps
14 video data audio data Switching P1 P3 P4 10 P2 P IN/port VPI/VCI OUT/port VPI/VCI P1 0/10 P3 0/11 P1 0/20 P4 0/21 P2 0/10 P4 0/12 P2 0/30 P5 0/30 For PVC, table done Manually SVC, table is done dynamically/ondemand
15 Reference Model AAL
16 Protocol Layers Applications Adaptive Layer (AAL) Layer Physical Layer Layer Physical Layer Applications Adaptive Layer (AAL) Layer Physical Layer End Station Switch End Station
17 Adaptation Layer Function: Add control information and break Protocol Data Unit (PDU) into cells Segmentation and Reassembly (SAR) AAL1: Designed for voice application Constant Bit Rate (CBR) Circuit Emulation Service (CES) (emulates TDM circuit) AAL2 (Not covered in this class) Variable Bit Rate (VBR) VBR-rt (voice) VBR-nrt (data) AAL5: AAL Physical Designed for data application Unspecified Bit Rate (UBR)
18 AAL1 Convergence Sublayer Sends 47 bytes to SAR Which adds 1 byte of SAR hdr SAR Hdr Payload = 47 SN: Sequence Number 1 bit Convergence Sublayer Indicator (Clock recovery) + 3 bit Sequence Count (for entire PDU from convergence sublayer) SNP: Sequence Number Protection: 3 bit CRC for the SN + Last bit, parity check for the previous 7 bits (SN and CRC) Q: How much overhead in an AAL1 cell?
19 AAL5 CPCS-PDU Payload Padding (0-47) up to Carries upper other Protocols inside CPCS payload (i.e. tcp/ip, ethernet why do we need padding? 8 byte trailer CPCS-UU (1) CPI (1) Length (2) CRC (4) Trailer alignment to 32 bit CPCS Payload Not including PAD CPCS: Common Part Convergence Sublayer PDU: Protocol Data Unit UU: User-to-user interface information CPI: Common Part Indicator 48 bytes (0..47) Cell payload To make the Full PDU Divisible by 48 Bytes And divide it Evenly into 48 byte segments
20 Segmentation and Reassembly (SAR) H:5-bytes H Cell 1 H Cell 2 H Cell n AAL5 Frame
21 NSAP Address This is required for NNI, but it is rarely used. Note NSAP has global significance while VPI/VCI is an addressing scheme that has local significance only. NNI: same issue with Frame Relay. NSAP: Network Service Access Point based on E.164 (phone #) 20 bytes
22 Connection Establishment A B Goal: setup VPI/VCI between any two devices
23 UNI Signaling (Q.2931) - SVC End Device SETUP PROCEEDING ALERT Switch SETUP PROCEEDING ALERT Switch SETUP ALERT CONNECT End Device VPI/VCI Will be Setup For each Direction CONNECT CONNECT Why do we need this signaling protocol? Connection Established, control, mgmt, Does it look familiar (Q.931)?
24 Signaling VCI (VPI=0) (UNI) e.g. VPI =0, VCI for connection establishment signaling Q; What is the VPI/VCI in the Q.2931 SETUP message? VPI= 0 VCI = 5
25 ILMI (mgmt plain) Integrated Local Management Interface (ILMI) enables devices to determine status of components at the other end of a physical link and to negotiate a common set of operational parameters to ensure interoperability. ILMI operates over a reserved VCC of VPI = X, VCI = 16. Administrators may enable or disable ILMI at will, but it is highly recommended to enable it. Doing so allows the devices to determine the highest UNI interface level to operate (3.0, 3.1, 4.0), UNI vs. NNI, as well as numerous other items. Furthermore, ILMI allows devices to share information such as NSAP addresses, peer interface names, and IP addresses. Without ILMI, many of these parameters must be manually configured for the attached devices to operate correctly.
26 PVC or SVC Q1: What is the purpose of PVC and SVC? Q2: What are differences between PVC and SVC? Q3: For data services, is it better to use PVC or SVC? Core (SVC) vs. Access (PVC) Using the dynamic setup in the core would be easier Q4: For voice services, is it better to use PVC or SVC? Core (PVC trunks are already there) vs. Access (SVC)
27 Quality of Service (QoS) CBR: Constant Bit Rate Guaranteed transmission rate EMULATING TDM circuit VBR: Variable Bit Rate (Requires QoS attention) rtvbr and nrtvbr (rt = real time) Peak Cell Rate (PCR) MAX allowed data rate The maximum cell rate at which the user will transmit Sustained Cell Rate (SCR) allowable cell rate over time Max Burst Size (MBR) Minimum Cell Rate (MCR) UBR: Unspecified Bit Rate No guarantee, best effort Service Bit Rate CBR PCR SCR VBR UBR
28 QoS How does a carrier ensure that QOS can be met? Connection Admission Control (CAC) Procedure for determining whether each new SETUP request should be granted or denied based on current network conditions Usage Parameter Control (UPC) Procedure for verifying whether customer is conforming to their contractual Traffic Parameters. PER the SLA Resource Management (RM) Procedure for notifying ABR users when they should slow down ABR: Available Bit Rate Selective Cell Discard (SCD) Procedure for discarding cells (CLP=1)during congestion.
29 IP over Protocol (RFC 2684) / /24 IP Both and Ethernet Switching IP PHY PHY RFC 2684 RFC 2684 PHY PHY AAL5 PHY AAL5 PHY Same Subnet Then we are Using switches 802.3: IEEE Media Access Control layer (also know as Ethernet)
30 Frame Relay and Interworking Frame Relay is an access technology, and it is rarely used on the carrier backbone (core). The backbone is usually the network, slowly migrating to IP/MPLS backbone. How is Frame Relay carried over the network?
31 /FR IWF Frame Relay Service Specific Convergence Sublayer (FR-SSCS) uses the same PDU format as Frame Relay (Q.922) minus the FCS and FLAG. FR traffic parameters (FECN, BECN, and DI) are maintained in FR-SSCS PDU. FRF.5 supports both one-to-one (one DLCI to one VPI/VCI) and many-to-one (many DLCIs to one VPI/VCI) mappings. Q: is DLCI in FR-SSCS used for addressing?
32 /FR Network Interworking (FRF.5) p1r1 FR (T1) OC-3 FR (T1) p1r3 FRF.5 Convert FR frames to cells Core Network FRF.5 Convert cells to FR frames
33 /FR Network Interworking (FRF.5) FR-SSCS: Frame Relay Service Specific Convergence Sublayer IWF: Interworking Function p1r1 Core p1r3 /FR IWF /FR IWF ULP FR PHY FR PHY FR-SSCS AAL5 PHY FR-SSCS AAL5 PHY FR PHY ULP FR PHY
34 /FR Network Interworking (FRF.8) FR-SSCS: Frame Relay Service Specific Convergence Sublayer IWF: Interworking Function Core p1r1 FR p1r3 /FR IWF IP RFC2427 IP FR FR FR-SSCS (FRF.8) RFC2684 PHY PHY AAL5 AAL5 PHY PHY PHY
ATM. Asynchronous Transfer Mode. (and some SDH) (Synchronous Digital Hierarchy)
ATM Asynchronous Transfer Mode (and some SDH) (Synchronous Digital Hierarchy) Why use ATM? Circuit switched connections: After initial setup no processing in network nodes Fixed bit rates, fixed time delay
More informationATM Technology in Detail. Objectives. Presentation Outline
ATM Technology in Detail Professor Richard Harris Objectives You should be able to: Discuss the ATM protocol stack Identify the different layers and their purpose Explain the ATM Adaptation Layer Discuss
More informationAsynchronous. nous Transfer Mode. Networks: ATM 1
Asynchronous nous Transfer Mode (ATM) 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 informationATM. Asynchronous Transfer Mode. these slides are based on USP ATM slides from Tereza Carvalho. ATM Networks Outline
ATM Asynchronous Transfer Mode these slides are based on USP ATM slides from Tereza Carvalho 1 ATM Networks Outline ATM technology designed as a support for ISDN Definitions: STM and ATM Standardization
More informationATM Logical Connections: VCC. ATM Logical Connections: VPC
ATM Logical Connections: VCC Logical Connections in ATM are referred to as virtual channel connections (VCCs). Virtual channel (VC) is a generic term used to describe unidirectional transport of ATM cells
More informationBandwidth-on-Demand up to very high speeds. Variety of physical layers using optical fibre, copper, wireless. 3BA33 D.Lewis
Broadband ISDN 3BA33 David Lewis 3BA33 D.Lewis 2007 1 B-ISDN Model has 3 planes User Control Management 3BA33 D.Lewis 2007 3 Broadband ISDN Was Expected to be the Universal Network of the future Takes
More information! Cell streams relating to different media types are multiplexed together on a statistical basis for transmission and switching.
Asynchronous Transfer Mode (ATM) Networks! All source media is first broken down into a stream of fixed sized units known as cells.! Cell streams relating to different media types are multiplexed together
More informationCISC452 Telecommunications Systems. Lesson 6 Frame Relay and ATM
CISC452 Telecommunications Systems Lesson 6 Frame Relay and ATM 1 Technology Comparison Private Line X.25 SMDS Frame Relay ATM IP Speed 56K - 622M 9.6K - 2.048M 56K - 34M Dial - 45M 1.5M - 622M Dial -
More informationATM Asynchronous Transfer Mode revisited
ATM Asynchronous Transfer Mode revisited ACN 2007 1 ATM GOAL To establish connections between an arbitrary number of hosts...... over channels that fulfills a certain QoS level. -> ATM networks make it
More informationAsynchronous Transfer Mode
ATM Asynchronous Transfer Mode CS420/520 Axel Krings Page 1 Protocol Architecture (diag) CS420/520 Axel Krings Page 2 1 Reference Model Planes User plane Provides for user information transfer Control
More informationAsynchronous Transfer Mode (ATM) ATM concepts
Asynchronous Transfer Mode (ATM) Asynchronous Transfer Mode (ATM) is a switching technique for telecommunication networks. It uses asynchronous time-division multiplexing,[1][2] and it encodes data into
More informationPart 5: Link Layer Technologies. CSE 3461: Introduction to Computer Networking Reading: Chapter 5, Kurose and Ross
Part 5: Link Layer Technologies CSE 3461: Introduction to Computer Networking Reading: Chapter 5, Kurose and Ross 1 Outline PPP ATM X.25 Frame Relay 2 Point to Point Data Link Control One sender, one receiver,
More informationConfiguring Frame Relay-ATM Interworking
Configuring -ATM Interworking The -ATM Interworking features enable and ATM networks to exchange data, despite differing network protocols. There are two types of -ATM Interworking: FRF.5 -ATM Network
More informationChapter 10. Circuits Switching and Packet Switching 10-1
Chapter 10 Circuits Switching and Packet Switching 10-1 Content Switched communication networks Circuit switching networks Circuit-switching concepts Packet-switching principles X.25 (mentioned but not
More informationProtocol Architecture (diag) Computer Networks. ATM Connection Relationships. ATM Logical Connections
168 430 Computer Networks Chapter 11 Asynchronous Transfer Mode Protocol Architecture Similarities between ATM and packet switching Transfer of data in discrete chunks Multiple logical connections over
More informationWilliam Stallings Data and Computer Communications 7 th Edition. Chapter 11 Asynchronous Transfer Mode
William Stallings Data and Computer Communications 7 th Edition Chapter 11 Asynchronous Transfer Mode Protocol Architecture Similarities between ATM and packet switching Transfer of data in discrete chunks
More informationConfiguring Frame Relay-ATM Interworking
The Frame Relay-ATM Interworking features enable Frame Relay and ATM networks to exchange data, despite differing network protocols. There are two types of Frame Relay-ATM Interworking: FRF.5 Frame Relay-ATM
More informationAsynchronous Transfer Mode (ATM) Broadband ISDN (B-ISDN)
Asynchronous Transfer Mode (ATM) Broadband ISDN (B-ISDN) Petr Grygárek rek 1 ATM basic characteristics Integrates transfer of voice, video, data and other media using statistical al multiplexing ing multiplexes
More informationBROADBAND AND HIGH SPEED NETWORKS
BROADBAND AND HIGH SPEED NETWORKS INTRODUCTION ATM stands for Asynchronous Transfer Mode ATM is a flexible high bandwidth, low delay network technology that is: Capable of handling voice, video and data
More informationThis Lecture. BUS Computer Facilities Network Management X.25. X.25 Packet Switch. Wide Area Network (WAN) Technologies. X.
This ecture BUS350 - Computer Facilities Network Management Wide rea Network (WN) Technologies. X.5 Frame Relay TM Faculty of Information Technology Monash University Faculty of Information Technology
More informationEthernet Switches (more)
Ethernet Switches layer 2 (frame) forwarding, filtering using LAN addresses Switching: A-to-B and A - to-b simultaneously, no collisions large number of interfaces often: individual hosts, star-connected
More informationATM Introduction. The Grand Unification 2005/03/11. (C) Herbert Haas
ATM Introduction The Grand Unification Agenda What is it? Who wants it? Who did it? Header and Switching ATM Layer Hypercube Adaptation Layers Signaling Addresses 2 What is ATM? High-Speed Virtual Circuits
More informationIntroduction to ATM Traffic Management on the Cisco 7200 Series Routers
CHAPTER 1 Introduction to ATM Traffic Management on the Cisco 7200 Series Routers In the latest generation of IP networks, with the growing implementation of Voice over IP (VoIP) and multimedia applications,
More informationAdvanced Internet Technologies
Advanced Internet Technologies Chapter 2 ATM Dr.-Ing. Falko Dressler Chair for Computer Networks & Internet Wilhelm-Schickard-Institute for Computer Science University of Tübingen http://net.informatik.uni-tuebingen.de/
More informationMaster Course Computer Networks IN2097
Chair for Network Architectures and Services Prof. Carle Department of Computer Science TU München Master Course Computer Networks IN2097 Prof. Dr.-Ing. Georg Carle Christian Grothoff, Ph.D. Stephan Günther
More informationATM Quality of Service (QoS)
ATM Quality of Service (QoS) Traffic/Service Classes, Call Admission Control Usage Parameter Control, ABR Agenda Introduction Service Classes and Traffic Attributes Traffic Control Flow Control Special
More informationIntermediate Traffic Management
Intermediate Traffic Management This presentation has been generated by the ATM Forum for the purpose of educating the public on ATM Technology and the ATM Forum s activities. This presentation is the
More informationLesson 3 Network technologies - Controlling
Lesson 3 Network technologies - Controlling Objectives : Network control or traffic engineering is one of the important techniques in the network. Understanding QoS control, traffic engineering and OAM
More informationA T M. Cell Switched Technology. not SMDS. Defacto Standard Multimedia capable Use with SONET or SDH. Fixed Length - 53 bytes. DigiPoints Volume 1
A T M Cell Switched Technology Fixed Length - 53 bytes not SMDS Defacto Standard Multimedia capable Use with SONET or SDH SCTE VA 12.1 SONET Optical Carrier (OC) Rates and SDH Synchronous Transport Module
More informationIntroduction. ATM Technology. What is ATM? Agenda
Introduction Technology Asynchronous Transfer Mode Principles, ing, AAL, Signaling In 1986 the CCITT (now ITU-T) adopted as background technology for B-ISDN B-ISDN intended to replace several widespread
More informationWireless Networks. Communication Networks
Wireless Networks Communication Networks Types of Communication Networks Traditional Traditional local area network (LAN) Traditional wide area network (WAN) Higher-speed High-speed local area network
More informationMPLS AToM Overview. Documentation Specifics. Feature Overview
MPLS AToM Overview This document provides an introduction to MPLS AToM and includes the following sections: Documentation Specifics, page 14 Feature Overview, page 14 Benefits, page 26 What To Do Next,
More informationAppendix 5 - ATM Technology in Detail
Technology Asynchronous Transfer Mode Principles, Layering, AAL, Signaling Agenda Introduction Reference Model Physical Layer Layer Switching Details Adaptation Layer Signaling and Addressing Technology,
More information1997, Scott F. Midkiff 1
Welcome to! Loooooooooooooooots of acronyms! By Scott Midkiff ECpE/CS 5516, VPI Spring 1997 (modified by Marc Abrams for Spring 1998) A lot of what s in came from the phone and ing worlds, not the LAN
More informationPRODUCT SUMMARY. SARA-Lite SAR for AAL Type 0/5 with UBR Traffic, Frame Relay and LANE Support INTRODUCTION
SARA-Lite SAR for AAL Type 0/5 with UBR Traffic, Frame Relay and LANE Support INTRODUCTION PRODUCT SUMMARY SARA-Lite ATM AAL0/5 Segmentation and Reassembly Product TheTranSwitchSARA-Lite product provides
More informationACE-2002, ACE-2002E. Multiservice Access Concentrators/ ATM Network Termination Units FEATURES
Multiservice Access Concentrators/ ATM Network Termination Units FEATURES Multiservice/ATM network demarcation device or access concentrator (ACE-2002), cellular access concentrator () Offer converged
More informationATM Networks. Raj Jain
ATM Networks Professor of Computer and Information Sciences The Ohio State University Columbus, OH 43210-1277 http://www.cis.ohio-state.edu/~jain/ 1 Overview ATM: Overview ATM Protocol Layers Network Interfaces
More informationAsynchronous_Transfer_Mode_Switching
Asynchronous Transfer Mode (ATM) is an International Telecommunication Union-Telecommunications Standards Section (ITU-T) standard for cell relay wherein information for multiple service types, such as
More informationVoice And Telephony over ATM: Status
Voice And Telephony over ATM: Status Columbus, OH 43210 Jain@CIS.Ohio-State.Edu http://www.cis.ohio-state.edu/~jain/ March 1998 1 Overview VTOA: Protocol Stack and Services AAL: AAL1, AAL5, New AAL2 Interworking
More informationATM networks. C. Pham Université de Pau et des Pays de l Adour LIUPPA Laboratory
ATM networks C. Pham Université de Pau et des Pays de l Adour LIUPPA Laboratory http://www.univ-pau.fr/~cpham Congduc.Pham@univ-pau.fr Issues Driving LAN Changes Traffic Integration Voice, video and data
More informationBasic concept of ATM communication
Lesson 3 AM Network (2days) Basic concept of AM communication Protocol structure of AM network Hardware routing OSI reference model AM network protocols Objectives : AM concepts are typical connection
More informationLecture 03 Chapter 11 Asynchronous Transfer Mode
NET 456 High Speed Networks Lecture 03 Chapter 11 Asynchronous Transfer Mode Dr. Anis Koubaa Reformatted slides from textbook Data and Computer Communications, Ninth Edition by William Stallings, 1 (c)
More informationUnspecified Bit Rate Plus and ATM Enhancements
Unspecified Bit Rate Plus and ATM Enhancements Last Updated: December 4, 2012 Feature History Release 12.2(2)XB 12.2(8)T Modification The UBR+ and ATM Enhancements for Service Provider Integrated Access
More informationHubs. Interconnecting LANs. Q: Why not just one big LAN?
Interconnecting LANs Q: Why not just one big LAN? Limited amount of supportable traffic: on single LAN, all stations must share bandwidth limited length: 802.3 specifies maximum cable length large collision
More informationCommunication Networks
Communication Networks Chapter 3 Multiplexing Frequency Division Multiplexing (FDM) Useful bandwidth of medium exceeds required bandwidth of channel Each signal is modulated to a different carrier frequency
More informationAsynchronous Transfer Mode
CHAPTER 20 This chapter describes the level of support that Cisco ANA provides for ATM, as follows: Technology Description, page 20-1 Information Model Objects (IMOs), page 20-3 Vendor-Specific Inventory
More informationNetwork Working Group Request for Comments: 2761 Category: Informational February 2000
Network Working Group Request for Comments: 2761 Category: Informational J. Dunn C. Martin ANC, Inc. February 2000 Terminology for ATM Benchmarking Status of this Memo This memo provides information for
More informationDigiPoints Volume 1. Leader Guide. Module 12 Asynchronous Transfer Mode. Summary. Outcomes. Objectives. Prerequisites
Asynchronous Transfer Mode Page 12.i DigiPoints Volume 1 Module 12 Asynchronous Transfer Mode Summary This last module of, covers ATM, and provides an end-to-end data communications model that draws on
More informationMAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI
MAHALAKSHMI ENGINEERING COLLEGE TIRUCHIRAPALLI 621 213 UNIT I HIGH SPEED NETWORKS Part A (2 Marks) 1. Differentiate Frame relay and X.25 packet-switching service. -> Call control signaling is carried on
More informationVanguard Managed Solutions
Vanguard Managed Solutions Vanguard Applications Ware IP and LAN Feature Protocols Asynchronous Transfer Mode Notice 2005 Vanguard Managed Solutions, LLC 575 West Street Mansfield, Massachusetts 02048
More informationConfiguring Inverse Muliplexing over ATM
This feature module describes how to configure Inverse Multiplexing over ATM (IMA) to transport ATM traffic over a bundle of T1 or E1 cables. This feature s the expansion of WAN bandwidth from T1 speeds,
More informationLecture 22 Overview. Last Lecture. This Lecture. Next Lecture. Internet Applications. ADSL, ATM Source: chapter 14
Last Lecture Lecture 22 Overview Internet Applications This Lecture ADSL, ATM Source: chapter 14 Next Lecture Wireless Networking Source: chapter 15 COSC244 & TELE202 Lecture 22 - ADSL, ATM 1 Modem Enable
More informationATM Networks: An Overview
ATM Networks: An Overview Professor of Computer and Information Sciences Columbus, OH 43210-1277 http://www.cis.ohio-state.edu/~jain/ 2-1 MBone Instructions Handouts for the class are available on-line:
More informationInternetworking Part 1
CMPE 344 Computer Networks Spring 2012 Internetworking Part 1 Reading: Peterson and Davie, 3.1 22/03/2012 1 Not all networks are directly connected Limit to how many hosts can be attached Point-to-point:
More information11. Traffic management in ATM
lect11.ppt S-38.145 - Introduction to Teletraffic Theory - Fall 2000 1 Contents Introduction ATM technique Service categories Traffic contract Traffic and congestion control in ATM Connection Admission
More informationPacket Switching. Packet Switching (CSE 573S) Packet Switching Methods. Packet Switching. Ken Wong Washington University
Packet Switching Packet Switching (CSE 57S) Ken Wong Washington University kenw@wustl.edu www.arl.wustl.edu/~kenw Key Idea: Transmit data in packets (short bundles) with headers (control)» Large messages
More informationUnderstanding the Variable Bit Rate Real Time (VBR rt) Service Category for ATM VCs
Understanding the Variable Bit Rate Real Time (VBR rt) Service Category for ATM VCs Document ID: 10414 Contents Introduction Prerequisites Requirements Components Used Conventions What is Variable Bit
More informationFigure 10.1 Cell switching principles: (a) routing schematic; (b) VP routing; (c) VC routing.
Figure. Cell switching principles: (a) routing schematic; (b) VP routing; (c) VC routing. (a) PCI =,,, 4 4 PCI =, 4 4 6 PCI = 6, Link/Port RT Link/Port RT Link/Port RT In Port PCI 4 Out Port PCI 4 6 Port
More informationConfiguring Layer 2 Local Switching
CHAPTER 17 The Layer 2 Local Switching feature allows you to switch Layer 2 data between two physical or virtual interfaces of the same type on the same router. The interfaces can be on the same line card
More informationPacket Switching Techniques
Packet Switching Techniques 188lecture3.ppt Pasi Lassila 1 Problem Aim: Build larger networks connecting more users also spanning different network technologies Shared media networks limited number of
More informationdifferent problems from other networks ITU-T specified restricted initial set Limited number of overhead bits ATM forum Traffic Management
Traffic and Congestion Management in ATM 3BA33 David Lewis 3BA33 D.Lewis 2007 1 Traffic Control Objectives Optimise usage of network resources Network is a shared resource Over-utilisation -> congestion
More information11. Traffic management in ATM. lect11.ppt S Introduction to Teletraffic Theory Spring 2003
lect11.ppt S-38.145 - Introduction to Teletraffic Theory Spring 2003 1 Contents Introduction ATM technique Service categories and traffic contract Traffic and congestion control in ATM Connection Admission
More informationThe BISDN Inter-Carrier Interface
The BISDN Inter-Carrier Interface Topics Scope Permanent Virtual Connection (PVC) Support Service Independent Functions Services (CRS, CES, FRS and SMDS) Switched Virtual Connection (SVC) Support New Areas
More informationPacket Switching - Asynchronous Transfer Mode. Introduction. Areas for Discussion. 3.3 Cell Switching (ATM) ATM - Introduction
Areas for Discussion Packet Switching - Asynchronous Transfer Mode 3.3 Cell Switching (ATM) Introduction Cells Joseph Spring School of Computer Science BSc - Computer Network Protocols & Arch s Based on
More informationCore Network. Core Network Technologies. S Verkkopalvelujen tuotanto S Network Service Provisioning Lecture 2: Core Network Technologies
Lic.(Tech.) Marko Luoma (1/37) Lic.(Tech.) Marko Luoma (2/37) S-38.192 Verkkopalvelujen tuotanto S-38.192 Network Service Provisioning Lecture 2: Core Network Technologies Connects MAN networks together
More informationBROADBAND AND HIGH SPEED NETWORKS
BROADBAND AND HIGH SEED NETWORKS LAYERS The function and associated information of the planes is as follows: The reference model is composed of the following planes: Control lane manages the call and connection.
More informationATM Software Segmentation and Reassembly
Feature History Release Modification 12.2(2)XB Cisco 2600 Series T1/E1 ATM and Cisco 3660 T1 Inverse Multiplexing over ATM (IMA) ATM Adaption Layer 2 (AAL2) Support was introduced. 12.2(8)T This feature
More informationTeldat Router ATM Doc. DM740-I Rev June, 2003
Teldat Router ATM Doc. DM740-I Rev. 10.10 June, 2003 INDEX Chapter 1 The ATM protocol...1 1. Introduction... 2 2. General Overview of ATM protocol... 3 2.1. Reference Model... 4 2.2. Physical Layer...
More informationNETWORK PARADIGMS. Bandwidth (Mbps) ATM LANS Gigabit Ethernet ATM. Voice, Image, Video, Data. Fast Ethernet FDDI SMDS (DQDB)
1. INTRODUCTION NETWORK PARADIGMS Bandwidth (Mbps) 1000 ATM LANS Gigabit Ethernet ATM 100 10 Fast Ethernet FDDI SMDS (DQDB) Voice, Image, Video, Data 1 Ethernet/ Token Ring/ Token Bus Frame Relay X.25
More informationRecent Advances in Networking Including ATM, Traffic Management, Switching, and QoS
Recent Advances in Networking Including ATM, Traffic Management, Switching, and QoS Columbus, OH 43210-1277 Jain@CIS.Ohio-State.Edu Chennai (Madras), India, December 18, 1998 http://www.cis.ohio-state.edu/~jain/talks/recent.htm
More informationCell Switching (ATM) Commonly transmitted over SONET other physical layers possible. Variable vs Fixed-Length Packets
Cell Switching (ATM) Connection-oriented packet-switched network Used in both WAN and LAN settings Signaling (connection setup) Protocol: Q2931 Specified by ATM forum Packets are called cells 5-byte header
More informationUNI Signalling 4.0. Scope Connection Types Call Endpoints Signalling Mechanisms Traffic Contract Service Parameters Futures Summary.
Signalling 4.0 Topics Scope ion Types Endpoints Signalling Mechanisms Traffic Contract Service Parameters Futures Summary Page 1 Scope of Signalling User-User Signalling User-Network Signalling Network-Network
More informationPRACTICES FNC Guide to ATM GUIDE TO ATM CROSS PRODUCT DOCUMENTATION ISSUE 1, JANUARY 2002 FUJITSU NETWORK COMMUNICATIONS, INC.
PRACTICES GUIDE TO ATM CROSS PRODUCT DOCUMENTATION ISSUE 1, JANUARY 2002 FUJITSU NETWORK COMMUNICATIONS, INC. Copyrights, Trademarks, and Disclaimers All products or services mentioned in this document
More informationMulti-Service Interworking Frame Relay and ATM Service Interworking over MPLS. MFA Forum
Multi-Service Interworking Frame Relay and Service Interworking over MFA Forum 15.0.0 MFA Forum Technical Committee January 2007 and Service Interworking over MFA Forum 15.0.0 Note: The user s attention
More informationCisco - Understanding the UBR Service Category for ATM Virtual Circuits
Page 1 of 9 Understanding the UBR Service Category for ATM Virtual Circuits Document ID: 10530 Contents Introduction Prerequisites Requirements Components Used Conventions Advantages and Disadvantages
More informationLecture 4 Wide Area Networks - Asynchronous Transfer Mode
DATA AND COMPUTER COMMUNICATIONS Lecture 4 Wide Area Networks - Asynchronous Transfer Mode Mei Yang Based on Lecture slides by William Stallings 1 ATM a streamlined packet transfer interface similarities
More informationChapter 1 Configuring ATM
Chapter 1 Configuring ATM This chapter introduces basic Asynchronous Transfer Mode (ATM) concepts, describes features of the ATM interfaces, and provides information for configuring ATM on E-series routers.
More informationFuture Internet Technologies
Future Internet Technologies Internet Backbone Dr. Dennis Pfisterer Institut für Telematik, Universität zu Lübeck http://www.itm.uni-luebeck.de/people/pfisterer Contents Routing Protocols Classification
More informationOutline. Circuit Switching. Circuit Switching : Introduction to Telecommunication Networks Lectures 13: Virtual Things
8-5: Introduction to Telecommunication Networks Lectures : Virtual Things Peter Steenkiste Spring 05 www.cs.cmu.edu/~prs/nets-ece Outline Circuit switching refresher Virtual Circuits - general Why virtual
More informationThe Design and modeling of input and output modules for an ATM network switch
Rochester Institute of Technology RIT Scholar Works Theses Thesis/Dissertation Collections 10-1-1997 The Design and modeling of input and output modules for an ATM network switch Darin Murphy Follow this
More informationDistributing Bandwidth Between Queues
CHAPTER 5 Developing a queuing strategy is an important step in optimizing network functionality and services. Equally important is ensuring that bandwidth is shared fairly among the competing traffic
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 All
More informationATM in TCP/IP environment: Adaptations and Effectiveness
Bremen Institute of Industrial Technology and Applied Work Science ATM in TCP/IP environment: Adaptations and Effectiveness Dipl.-Ing. Kai-Oliver Detken, BIBA ATM Traffic Symposium, Mykonos, Greece, September
More informationETSI TS V1.1.1 ( )
TS 102 115-2 V1.1.1 (2002-10) Technical Specification Broadband Radio Access Networks (BRAN); HIPERACCESS; Cell based Convergence Layer; Part 2: UNI Service Specific Convergence Sublayer (SSCS) 2 TS 102
More informationPA-A6 Enhanced ATM Port Adapter for Cisco 7200, 7301, 7500, and 7600 Series Routers
PA-A6 Enhanced ATM Port Adapter for Cisco 7200, 7301, 7500, and 7600 Series Routers The enhanced Cisco ATM Port Adapter (product number ATM PA-A6) is a single-port, single-wide ATM port adapter for the
More informationBackbone network technologies. T Jouni Karvo, Timo Kiravuo
Backbone network technologies T-110.300 Jouni Karvo, Timo Kiravuo Backbone network technologies This lecture tells about landline backbone networks After this lecture, you should know WDM, PDH, SDH and
More informationPacket Switching. Hongwei Zhang Nature seems to reach her ends by long circuitous routes.
Problem: not all networks are directly connected Limitations of directly connected networks: limit on the number of hosts supportable limit on the geographic span of the network Packet Switching Hongwei
More informationComputer Networks II
Computer Networks II Asynchronous Transfer Mode Giorgio Ventre COMICS LAB Dipartimento di Informatica e Sistemistica Università di Napoli Federico II Nota di Copyright Quest insieme di trasparenze è stato
More informationMetropolitan Area Network. Core Network. Technologies
Lic.(Tech.) Marko Luoma (1/49) Lic.(Tech.) Marko Luoma (2/49) S-38.3192 Verkkopalvelujen tuotanto S-38.3192 Network Service Provisioning Lecture 2: Core and Metro Network Technologies Metropolitan Area
More informationMaster Course Computer Networks IN2097
Chair for Network Architectures and Services Prof. Carle Department of Computer Science TU München Master Course Computer Networks IN2097 Prof. Dr.-Ing. Georg Carle Christian Grothoff, Ph.D. Stephan Günther
More informationCommon Protocols. The grand finale. Telephone network protocols. Traditional digital transmission
The grand finale Common Protocols An Engineering Approach to Computer Networking Previous chapters presented principles, but not protocol details these change with time real protocols draw many things
More informationThis chapter describes how to configure ATM on Cisco routers.
Configuring ATM Last Updated: December 4, 2012 This chapter describes how to configure ATM on Cisco routers. Finding Feature Information, page 1 How to Configure ATM, page 1 ATM Configuration Examples,
More informationModule 10 Frame Relay and ATM
Module 10 Frame Relay and ATM Lesson 34 ATM: Concepts And Header 10.2.1 INTRODUCTION IP has a varying packet size which causes no problem while multiplexing but makes switching difficult. ATM uses a fixed
More informationTraffic Management. Service Categories CHAPTER
CHAPTER 3 The following traffic management functions are supported on the PNNI node: Asymmetrical traffic requirements. Connection Admission Control (CAC). Qbin for AutoRoute and PNNI Mapping of SVC/SPVC
More informationETSI TS V1.2.1 ( )
TS 101 674-1 V1.2.1 (1999-10) Technical Specification Technical Framework for the provision of interoperable ATM services NNI-Interface; User and Control plane specification (including network functions
More information2001 ALCATEL BELL N.V. ALL RIGHTS RESERVED VHBE Alcatel University. Page 1
1 Page 1 ADSL coaching team Frank Vercamme Frank.Vercamme@alcatel.be Marc Debacker Marc.Debacker@alcatel.be Werner Van Loock Werner.van_loock@alcatel.be Brian Bogaerts Brian.Bogaerts@alcatel.be Customer
More informationCommunication Networks
Communication Networks Chapter 7 Connection Oriented Packet Data Networks Communication Networks - 7. Connection Oriented PDNs 236 Overview 1. Fundamentals of Connection-Oriented Packet Switching 2. X.25
More informationWAN Technologies (to interconnect IP routers) Mario Baldi
WAN Technologies (to interconnect IP routers) Mario Baldi www.baldi.info WAN_Technologies - 1 Copyright: see page 2 Copyright Notice This set of transparencies, hereinafter referred to as slides, is protected
More informationUnit_2 The Telephone Network. Shikha Sharma RCET,Bhilai 1
Unit_2 The Telephone Network Shikha Sharma RCET,Bhilai 1 Is it a computer network? Specialized to carry voice Also carries telemetry video fax modem calls Internally, uses digital samples Switches and
More informationConfiguring ATM QoS or Shaping
Configuring ATM QoS or Shaping M7i, M1i, M4e, M12, and M32 routers with 4-port channelized OC3/STM1 Circuit Emulation PICs and 12-port T1/E1 Circuit Emulation PICs support ATM pseudowire service with QoS
More information