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IBM ATM OC-3c manual 16CHAPTER 2 Network Layer Concepts

Models: ATM OC-3c

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2-16CHAPTER 2: NETWORK LAYER CONCEPTS

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IBM ATM OC-3c manual 16CHAPTER 2 Network Layer Concepts

Contents

User’s Guide First Edition October Research Triangle Park NCContents Accessing Management Features Screen Map Glossary Bibliography Page About this Guide IntroductionTerminology ATM TerminologyFinding Information in This Guide ConventionsTask Location Icon Alerts you toRelated Documentation BoldAbout this Guide Features and Benefits ATM BenefitsATM Module Features Wire Rate Transmission on ATM portNetwork Layer Concepts Layered Network ArchitectureWhat is LAN Emulation LANE? Upper Layer ProtocolsLAN Emulation Configuration Server Lecs LAN Emulation ComponentsLAN Emulation Client LEC LAN Emulation Server LESLAN Emulation Components in Your Network LAN Emulation and IBM DevicesLEC must know the name of the Elan it is to join Joining the ElanLocating the Lecs Mapping Ethernet and ATM Addresses Address ResolutionIf the destination MAC address is listed in the ARP Table What Happens to Unicast Frames? LAN Emulation Address Resolution Protocol LearpWhat Happens to Broadcast and Multicast Frames? ATM Adaptation Layer AAL Asynchronous Transfer Mode ATM LayerATM is Cell-based ATM is Service Transparent ATM is Connection-orientedVirtual Path Identifier VPI Virtual Channel Identifier VCI 7Switching Cells using VPI and VCI values ATM Interfaces Switched Virtual Circuits SVCsPermanent Virtual Circuits PVCs ATM Address Registration Interim Local Management Interface IlmiNetworkhostidentifier ATM Layer and Cell Structure 10ATM Cell StructurePhysical Layer Sonet STS-3c16CHAPTER 2 Network Layer Concepts Creating Inter-switch VLANs What is a Virtual LAN VLAN?Virtual LAN Concepts Extending VLANs into the ATM Network 2VLAN to Elan MappingExtending VLANs into the ATM Network 4CHAPTER 3 Virtual LAN Concepts Putting Your ATM Network Together Planning Your NetworkDoes your existing ATM network have sufficient resources? Can your ATM devices communicate with each other?ATM Configuration Rules Extending VLANs Through the ATM NetworkAre the LAN Emulation services configured correctly? ATM Connections Within Your Network1SVC Signalling Not Supported in Remote Edge-device Network Configuration Examples ATM Backbone in the BuildingCampus Configuration Campus Configuration 3Resilient Link Configuration Making a Building Resilient to Network FailureInstalling and Setting UP the Module Following Safety InformationÎïàñíî EbezpečíCheck the Power Supply Pre-installation ProcedureDevice Support Installation 1Fitting the ATM ModulePost-Installation Checks Connecting a cable to the ATM PortPowering Up the Switch Power On Self Test PostLED Summary Checking that the ATM Module is Installed Correctly Checking the Power SupplyChecking the Physical Connections 8CHAPTER 6 Installing and Setting UP the Module Accessing Management Features Screen MapKeyboard Shortcuts Correcting Text EntryScreen Map Logging On Main BannerLogging Off User Name Default Access Level PasswordAutomatic Logout Managing the ATM Module 1Management Screen MapConfiguring an ATM Port 2ATM Module Configuration ScreenConfiguring an ATM Port Desired Value of VPI Number of bits Required3ATM LEC Setup Screen 4Switch Management Screen Displaying all VLANsATM Port Setup 5VLAN Selected Screen7ATM Port Setup Screen Problem SolutionMapping Far End MAC Addresses 8ATM ARP Table ScreenCreating a MAC Address to ATM Entry Mapping Far End MAC AddressesDisplaying an ATM Connection Finding an Address EntryUpdating Address Entries Deleting an Address EntrySetting Up Resilient Links Finding an ATM Connection10Software Upgrade Screen Upgrading SoftwareError Messages Status Messages ActiveDownload successful Load PausedMonitoring the ATM Module 1Status Monitoring Screen MapStatistics Overview MonitoringUsePhysical Connection ATM Physical Layer Statistics screen2Switch Management Screen ATM Port Statistics4CHAPTER 9 Monitoring the ATM Module ATM Vlan LEC Status 4ATM Vlan LEC Status ScreenState Possible Causes Possible Solutions None TimeoutUndefined Error LEC State DescriptionState Possible Causes Possible Solutions Invalid Request State Possible Causes Possible Solutions Duplicated ATMParameters Duplicate LANState Possible Causes Possible Solutions Insufficient State Possible Causes Possible Solutions InvalidAccess Denied No ConfigurationState Possible Causes Possible Solutions ErrorConfiguration Connecting to BUSATM Physical Layer Statistics Following button is available on this screenATM Physical Layer Statistics Using Physical Layer Statistics to Troubleshoot ATM Physical Layer Statistics 14CHAPTER 9 Monitoring the ATM Module Safety Notices Safety InformationWorld Trade Safety Information 2APPENDIX a Safety Information Safety Notices Neodstraňujte desky modulů, pokud je připojeno napájení Safety Notices 6APPENDIX a Safety Information Safety Notices 8APPENDIX a Safety Information Screen Access Rights 2APPENDIX B Screen Access Rights Environmental Specifications ATM Module Technical SpecificationsATM Cable Specification Does the Cable Provide Sufficient Bandwidth? Specification DescriptionNumerical Aperture Example 4APPENDIX C ATM Module Technical Specifications Troubleshooting How to Use this Guide to TroubleshootUsing LEDs Identifying the Problem Figure D-1Troubleshooting Flow Diagram Access the Physical Layer Statistics Screen Are there Physical Layer Errors?Access the ATM Port Setup Screen Check the Physical ConnectionsIs the ATM Port Enabled? Enable the ATM PortAccess the ATM Port Statistics Screen Are Cells being transmitted and received?Is the LEC ATM Address Valid for the Default VLAN? Access the ATM Vlan LEC Status ScreenIs the ATM Switch Using AAL5? Access the ATM Module Configuration Screen Is Signalling Compatible?Make Signalling Compatible Both Devices Must be AAL5 CompliantIs the Ilmi Connection Set Up Correctly? Make Ilmi VPI/VCI Same at Both Ends of the LinkAre the MAX VPI and VCI Bits Compatible? Make the MAX VPI and VCI Bits CompatibleWhy has the LEC Operation Failed? OperationalState Possible Causes LEC is trying to join Is the LEC Operational Now? Elan Configuration Problems Has the Problem been Solved?Are the LECs on the Same Emulated LAN? Re-map or Route the LECIs the MAC Address in the Switch Database? Enter the MAC Address in the Switch DatabaseIs There Still a Problem? Use routingSolving Known Problems Power Supply Problems Switch powers up but thenShuts itself down after a Few minutesATM Module Fails Power on Power On Self Test Post FailureSelf Test Post Cable Connection Problems Far End Status LED indicatesOnly showing reserved ATM ATM ProblemsConnections Vlan or Elan Problems Communicate with eachOther Insufficient ResourcesExample To clean fiber optic connectors on the ATM Module Cleaning Dirty Fiber Optic ConnectorsTo clean the cable connectors Technical Support and Service Electronic SupportVoice Support IBM Bulletin Board System2APPENDIX E Technical Support and Service Trademarks IBM Warranty for Machines Statement of Limited WarrantyProduction Status Warranty Service Extent of WarrantyLimitation of Liability Electronic Emission Notices Federal Communications Commission FCC StatementEuropean Union EU Statement Information To The User How to Identify and Resolve Radio-TV Interference Problems Glossary ATM SwitchATM Forum Byte CellCell Header ConnectionlessLAN Emulation Lane LinkMultiplex OctetOC-n PayloadTelnet UNIVCI Virtual ChannelAsynchronous Transfer Mode ATM BibliographyLAN Emulation Lane BooksBibliography Index ATMSDH STM-1 Sonet Index