Glossary, ATM Forum, ATM Switch | IBM ATM OC-3c guide

GLOSSARY

AAL

ATM Adaptation Layer — A set of protocols that translate user higher-layer protocols into ATM cell format. The AAL is divided into the Convergence Sublayer (CS) and the Segmentation and Reassembly (SAR) sublayer.

ANSI

American National Standards Institute. A United States technology standards organization.

ARP

Address Resolution Protocol — See LE_ARP.

ASIC

Application Specific Integrated Circuit.

ATM

Asynchronous Transfer Mode — A connection oriented transmission protocol based on fixed length cells (packets) of 53 bytes (including a 5-byte cell header) in length.

The ATM concept was defined by ANSI and ITU (formerly CCITT) for carrying a complete range of user traffic, including voice, data and video signals, on any User-To-Network Interface (UNI).

ATM Forum

A consortium of organizations representing vendors, manufacturers, carriers, service providers, universities, research groups, consultants and users.

The ATM Forum recommends and defines specifications for ATM standards, promotes industry cooperation in the implementation of ATM technologies, and encourages the use of ATM products and services.

ATM Switch

An ATM device responsible for switching the cells.

B-ISDN

Broadband Integrated Services Digital Network — A protocol platform to support the integrated, high-speed transmission of data, audio and video in a seamless fashion. ATM emerged as a suitable transport standard.

BUS

Broadcast and Unknown Server — A server that forwards multicast, broadcast and unknown destination address traffic to the LECs attached to the Emulated LAN.

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IBM ATM OC-3c manual Glossary, ATM Forum, ATM Switch

Contents

User’s Guide Research Triangle Park NC First Edition October Contents Accessing Management Features Screen Map Glossary Bibliography Page Introduction About this GuideTerminology ATM Terminology Conventions Finding Information in This GuideTask Location Icon Alerts you to Bold Related Documentation About this Guide ATM Benefits Features and Benefits Wire Rate Transmission on ATM port ATM Module Features Layered Network Architecture Network Layer Concepts Upper Layer Protocols What is LAN Emulation LANE? LAN Emulation Components LAN Emulation Configuration Server LecsLAN Emulation Client LEC LAN Emulation Server LES LAN Emulation and IBM Devices LAN Emulation Components in Your Network Joining the Elan LEC must know the name of the Elan it is to joinLocating the Lecs Address Resolution Mapping Ethernet and ATM AddressesIf the destination MAC address is listed in the ARP Table LAN Emulation Address Resolution Protocol Learp What Happens to Unicast Frames?What Happens to Broadcast and Multicast Frames? Asynchronous Transfer Mode ATM Layer ATM Adaptation Layer AALATM is Cell-based ATM is Connection-oriented ATM is Service Transparent Virtual Path Identifier VPI Virtual Channel Identifier VCI 7Switching Cells using VPI and VCI values Switched Virtual Circuits SVCs ATM InterfacesPermanent Virtual Circuits PVCs Interim Local Management Interface Ilmi ATM Address RegistrationNetworkhostidentifier 10ATM Cell Structure ATM Layer and Cell Structure Sonet STS-3c Physical Layer 16CHAPTER 2 Network Layer Concepts What is a Virtual LAN VLAN? Creating Inter-switch VLANsVirtual LAN Concepts 2VLAN to Elan Mapping Extending VLANs into the ATM Network Extending VLANs into the ATM Network 4CHAPTER 3 Virtual LAN Concepts Planning Your Network Putting Your ATM Network TogetherDoes your existing ATM network have sufficient resources? Can your ATM devices communicate with each other? Extending VLANs Through the ATM Network ATM Configuration Rules ATM Connections Within Your Network Are the LAN Emulation services configured correctly? 1SVC Signalling Not Supported in Remote Edge-device ATM Backbone in the Building Network Configuration Examples Campus Configuration Campus Configuration Making a Building Resilient to Network Failure 3Resilient Link Configuration Following Safety Information Installing and Setting UP the Module Ebezpečí Îïàñíî Pre-installation Procedure Check the Power SupplyDevice Support 1Fitting the ATM Module Installation Connecting a cable to the ATM Port Post-Installation ChecksPowering Up the Switch Power On Self Test Post LED Summary Checking the Power Supply Checking that the ATM Module is Installed CorrectlyChecking the Physical Connections 8CHAPTER 6 Installing and Setting UP the Module Screen Map Accessing Management FeaturesKeyboard Shortcuts Correcting Text Entry Screen Map Main Banner Logging On User Name Default Access Level Password Logging OffAutomatic Logout 1Management Screen Map Managing the ATM Module 2ATM Module Configuration Screen Configuring an ATM Port Desired Value of VPI Number of bits Required Configuring an ATM Port 3ATM LEC Setup Screen Displaying all VLANs 4Switch Management Screen 5VLAN Selected Screen ATM Port Setup Problem Solution 7ATM Port Setup Screen 8ATM ARP Table Screen Mapping Far End MAC Addresses Mapping Far End MAC Addresses Creating a MAC Address to ATM Entry Finding an Address Entry Displaying an ATM ConnectionUpdating Address Entries Deleting an Address Entry Finding an ATM Connection Setting Up Resilient Links Upgrading Software 10Software Upgrade Screen Error Messages Active Status MessagesDownload successful Load Paused 1Status Monitoring Screen Map Monitoring the ATM Module MonitoringUse Statistics OverviewPhysical Connection ATM Physical Layer Statistics screen ATM Port Statistics 2Switch Management Screen 4CHAPTER 9 Monitoring the ATM Module 4ATM Vlan LEC Status Screen ATM Vlan LEC Status Timeout State Possible Causes Possible Solutions NoneUndefined Error LEC State Description State Possible Causes Possible Solutions Duplicated ATM State Possible Causes Possible Solutions Invalid RequestParameters Duplicate LAN State Possible Causes Possible Solutions Invalid State Possible Causes Possible Solutions InsufficientAccess Denied No Configuration Error State Possible Causes Possible SolutionsConfiguration Connecting to BUS Following button is available on this screen ATM Physical Layer Statistics ATM Physical Layer Statistics Using Physical Layer Statistics to Troubleshoot ATM Physical Layer Statistics 14CHAPTER 9 Monitoring the ATM Module Safety Information Safety NoticesWorld 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 ATM Module Technical Specifications Environmental SpecificationsATM Cable Specification Specification Description Does the Cable Provide Sufficient Bandwidth?Numerical Aperture Example 4APPENDIX C ATM Module Technical Specifications How to Use this Guide to Troubleshoot Troubleshooting Using LEDs Identifying the Problem Figure D-1Troubleshooting Flow Diagram Are there Physical Layer Errors? Access the Physical Layer Statistics Screen Check the Physical Connections Access the ATM Port Setup Screen Enable the ATM Port Is the ATM Port Enabled?Access the ATM Port Statistics Screen Are Cells being transmitted and received? Access the ATM Vlan LEC Status Screen Is the LEC ATM Address Valid for the Default VLAN?Is the ATM Switch Using AAL5? Is Signalling Compatible? Access the ATM Module Configuration ScreenMake Signalling Compatible Both Devices Must be AAL5 Compliant Make Ilmi VPI/VCI Same at Both Ends of the Link Is the Ilmi Connection Set Up Correctly?Are the MAX VPI and VCI Bits Compatible? Make the MAX VPI and VCI Bits Compatible Operational Why has the LEC Operation Failed? State Possible Causes LEC is trying to join Is the LEC Operational Now? Has the Problem been Solved? Elan Configuration ProblemsAre the LECs on the Same Emulated LAN? Re-map or Route the LEC Enter the MAC Address in the Switch Database Is the MAC Address in the Switch Database?Is There Still a Problem? Use routing Solving Known Problems Switch powers up but then Power Supply ProblemsShuts itself down after a Few minutes Power On Self Test Post Failure ATM Module Fails Power onSelf Test Post Far End Status LED indicates Cable Connection Problems ATM Problems Only showing reserved ATMConnections Communicate with each Vlan or Elan ProblemsOther Insufficient Resources Example Cleaning Dirty Fiber Optic Connectors To clean fiber optic connectors on the ATM ModuleTo clean the cable connectors Electronic Support Technical Support and ServiceVoice Support IBM Bulletin Board System 2APPENDIX E Technical Support and Service Trademarks Statement of Limited Warranty IBM Warranty for MachinesProduction Status Extent of Warranty Warranty Service Limitation of Liability Federal Communications Commission FCC Statement Electronic Emission Notices European Union EU Statement Information To The User How to Identify and Resolve Radio-TV Interference Problems ATM Switch GlossaryATM Forum Cell ByteCell Header Connectionless Link LAN Emulation Lane Octet MultiplexOC-n Payload UNI Telnet Virtual Channel VCI Bibliography Asynchronous Transfer Mode ATMLAN Emulation Lane Books Bibliography ATM Index SDH STM-1 Sonet Index