Nortel Networks 8100, 1000BASE-XD manual Port Connection Problems, Cabling

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Using the Passport 8100 Modules

Port Connection Problems

Port connection problems can usually be traced to a poor cable connection or to an improper connection of the port cables at either end of the link. These types of problems can be remedied by making sure that the cable connections are secure and that the cables are connected to the correct ports at both ends of the link.

For more information about cabling, see “Cabling,” next in this chapter.

Port connection problems can also be traced to the autonegotiation mode (refer to “Autonegotiation Modes” on page 4-5) or the port interface.

Cabling

Cabling for 10BASE-T networks can consist of 2-pair Category 3, 4, or 5 unshielded twisted pair (UTP) wiring. However, to cover future upgrades to Fast Ethernet, Nortel Networks strongly recommends that you use all Category 5 cable in your network.

Ethernet 10BASE-T network installations use cables consisting of two pairs of twisted pair wires—one pair to send data and one to receive data. These wires must connect to another 10BASE-T station that has the sending pair attached to its receiving pair and vice versa. In this way, the two nodes can exchange data. If the two nodes are wired alike, they both attempt to send data out on the same RJ-45 pins. In such a case, a straight-through cable would not work. However, a crossover cable would operate normally.

The Passport 8100 Series modules are designed to have Ethernet NICs connect directly to their RJ-45 ports using straight-through (MDI) cables. However, if a Passport 8100 module must connect to a hub or another switch that follows usual conventions, a crossover cable (MDI-X) is required.

The 100 Mb/s ports are designed to operate using Category 5 UTP cabling only. Category 5 UTP cable is a 2-pair cable certified to handle up to 100 Mb/s bandwidth. To minimize crosstalk noise, maintain the twist ratio of the cable up to the point of termination; untwist at any termination should not exceed 0.5 inch (1.27 cm).

For best performance with respect to noise immunity and emissions, the unused pairs in the 2-pair cable should be terminated at their characteristic impedance (that is, 100 ohms) in the equipment at each end of the cable. All Nortel Networks 100BASE-TX equipment includes such a Common Mode Termination (CMT).

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204515-C

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Contents Using the Passport 8100 Modules EN 55 022 Statement EC Declaration of ConformityVoluntary Control Council for Interference Vcci Statement Bureau of Standards, Metrology and Inspection Bsmi Statement204515-C 204515-C 204515-C Contents Chapter Installing a Passport 8100 Module Appendix a Technical Specifications Appendix C Media Dependent Adapters Figures Figure C-1 BASE-SX Shortwave Gigabit MDA Front Panels Tables Xiv Preface Before You BeginText Conventions Italic textRelated Publications Xviii How to Get Help Technical Solutions Center Telephone NumberPage Chapter About the Passport 8100 Modules Features About the Passport 8100 Modules Passport 8190SM Switch Management Module Passport 8190SM Management ModuleEthernet Management Port Serial Ports DTE/DCE SwitchReset Button Pcmcia Card SlotLEDs LEDs on the Passport 8190SM Module10BASE-T/100BASE-TX Port Connectors Passport 8132TX 32-Port I/O ModuleMDA Slot Comm PortLEDs on the Passport 8132TX Module Passport 8148TX Edge Switch Module Passport 8148TX 48-Port I/O ModulePassport 8108GBIC 8-Port I/O Module LEDs on the Passport 8148TX ModuleRedundancy Features Passport 8108GBIC ModuleRedundant Power Supplies Redundant Passport 8190SM ModulesPower Supply Hot-Swapping Chassis Number Hot-Swap One? Modules Power SuppliesCombining Passport 8100 and Passport 8600 Modules Chapter Installing a Passport 8100 Module Chassis Configuration Requirements Safety and Environmental PrecautionsInstalling a Module Removing a Filler PanelSlide the module into the slot Figure Turning On the Chassis Power Securing the Module in the ChassisConnecting Cables Replacing Modules Routing Network CablesTo replace a module Chapter Basic Switch Configuration Specifying Port Numbers Port Numbers on High-Density ModulesBooting the Switch Access Level Description Default Login Password Access Levels and Default Login ValuesLogging On to the System Setting System Identification Assigning an IP Address to the Management PortSetting System Security Change CLI users and passwords using the following commandsChange Web passwords using the command Switch Configuration To assign an IP address for management, use the commandSpecify a default gateway address/default route Page Chapter Troubleshooting Normal Power-Up SequenceLED Indications of Problems Failure to Get a Login Prompt from the Console PortFailure of Management Software to Recognize I/O Modules LED Indications of Problems Symptom Probable Cause Corrective ActionPort Connection Problems CablingAutonegotiation Modes Use the CLI to disable autonegotiation for the suspect port Port InterfaceInstallation-Related Issues AddressesPage General Specifications Appendix a Technical SpecificationsStandards Supported Safety Agency Approvals Environmental SpecificationsPerformance Specifications 64-byte packets Data Rate and EncodingPassport 8190SM Switch Management Module Management Port Connector Pin Number SignalConsole Serial Port Modem Serial Port Table A-3 DTE-to-DCE Pin AssignmentsCable Specifications Data Port ConnectorsConnector Type Passport 8132TX Module450-1SR MDA, 450-1SX MDA Comm Port ConnectorMDAs 450-1LR MDA, 450-1LX MDAPassport 8148TX Module Port ConnectorsTable A-5. Passport 8148TX Port Pinouts Passport 8108GBIC Module GBICsOptical Specifications 1000BASE-SX Gbic1000BASE-XD Gbic MDI and MDI-X Connections Figure A-1. MDI-X to MDI Cable ConnectionsDeclaration of Conformity Figure A-2. MDI-X to MDI-X Cable ConnectionsPage Appendix B LEDs Figure B-1. LEDs on the Passport 8190SM ModuleTable B-1 LED Operation on the Passport 8190SM Module Label Color/State MeaningPassport 8132TX and 8148TX I/O Modules Figure B-2. LEDs on the Passport 8132TX and 8148TX ModulesLED Color/State MeaningTable B-5 Port LEDs on the Passport 8108GBIC Module Page Appendix C Media Dependent Adapters Series MDAs Figure C-1 BASE-SX Shortwave Gigabit MDA Front PanelsTable C-1 1000BASE-SX MDA LEDs Label Type Color/State Meaning8100-4TX MDA Table C-2 1000BASE-LX MDA LEDsSeries Fiber MDAs Table C-3 8100-4TX MDA LEDsFigure C-4 Series MDA Front Panels Table C-4 Series MDA LEDsInstalling an MDA Figure C-5. Installing an MDAUsing the Passport 8100 Modules Appendix D Installing GBICs Figure D-1. Types of GBICsInstalling a Gbic Figure D-2. Installing a GbicTo remove an installed Gbic Page Appendix E RFCs and Standards Page Index NumbersIndex-2 Index-3 Index-4
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