Nortel Networks 1000BASE-XD, 8100 manual Autonegotiation Modes

Page 59

Troubleshooting

The fiber MDAs use only multimode 62.5/125 ∝m fiber cable. The Nortel Networks 100BASE-FX MDA is not supported on single-mode fiber. SC connectors are used on 2-port 100BASE-FX MDAs, and MT-RJ connectors are used on 4-port 100BASE-FX MDAs.

Cables for the GBICs vary depending on the specific GBIC type. For details of the cable requirements for GBICs, refer to Appendix A, “Technical Specifications.”

Autonegotiation Modes

Port connection problems can occur when a port (or station) is connected to another port (or station) that is not operating in a compatible mode (for example, connecting a full-duplex port on one station to a half-duplex port on another station).

The Passport 8100 modules negotiate port speeds according to the IEEE 802.3u autonegotiating standard. The switch adjusts (autonegotiates) its port speed and duplex mode to match the best service provided by the connected station, up to 100 Mb/s in full-duplex mode.

The following autonegotiation problems can occur:

•If the connected station uses a form of autonegotiation that is not compatible with the IEEE 802.3u autonegotiating standard, the Passport 8100 module cannot negotiate a compatible mode for correct operation.

•If the autonegotiation feature is not present or is not enabled at the connected station, the Passport 8100 module may not be able to determine the correct duplex mode.

In both situations, the Passport 8100 module autosenses the speed of the connected station and, by default, reverts to half-duplex mode. If the connected station is operating in full-duplex mode, it cannot communicate with the switch.

204515-C

4-5

Image 59

Contents Using the Passport 8100 Modules EC Declaration of Conformity EN 55 022 StatementBureau of Standards, Metrology and Inspection Bsmi Statement Voluntary Control Council for Interference Vcci 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 Before You Begin PrefaceItalic text Text ConventionsRelated Publications Xviii Technical Solutions Center Telephone Number How to Get HelpPage Chapter About the Passport 8100 Modules Features About the Passport 8100 Modules Passport 8190SM Management Module Passport 8190SM Switch Management ModuleEthernet Management Port Pcmcia Card Slot DTE/DCE SwitchReset Button Serial PortsLEDs on the Passport 8190SM Module LEDsPassport 8132TX 32-Port I/O Module 10BASE-T/100BASE-TX Port ConnectorsComm Port MDA SlotLEDs on the Passport 8132TX Module Passport 8148TX 48-Port I/O Module Passport 8148TX Edge Switch ModuleLEDs on the Passport 8148TX Module Passport 8108GBIC 8-Port I/O ModulePassport 8108GBIC Module Redundancy FeaturesRedundant Passport 8190SM Modules Redundant Power SuppliesChassis Number Hot-Swap One? Modules Power Supplies Power Supply Hot-SwappingCombining Passport 8100 and Passport 8600 Modules Chapter Installing a Passport 8100 Module Safety and Environmental Precautions Chassis Configuration RequirementsRemoving a Filler Panel Installing a ModuleSlide the module into the slot Figure Securing the Module in the Chassis Turning On the Chassis PowerConnecting Cables Routing Network Cables Replacing ModulesTo replace a module Chapter Basic Switch Configuration Port Numbers on High-Density Modules Specifying Port NumbersBooting the Switch Logging On to the System Access Levels and Default Login ValuesAccess Level Description Default Login Password Assigning an IP Address to the Management Port Setting System IdentificationChange CLI users and passwords using the following commands Setting System SecurityChange Web passwords using the command To assign an IP address for management, use the command Switch ConfigurationSpecify a default gateway address/default route Page Normal Power-Up Sequence Chapter TroubleshootingFailure of Management Software to Recognize I/O Modules Failure to Get a Login Prompt from the Console PortLED Indications of Problems Symptom Probable Cause Corrective Action LED Indications of ProblemsCabling Port Connection ProblemsAutonegotiation Modes Port Interface Use the CLI to disable autonegotiation for the suspect portAddresses Installation-Related IssuesPage Standards Supported Appendix a Technical SpecificationsGeneral Specifications Data Rate and Encoding Environmental SpecificationsPerformance Specifications 64-byte packets Safety Agency ApprovalsPassport 8190SM Switch Management Module Console Serial Port Connector Pin Number SignalManagement Port Table A-3 DTE-to-DCE Pin Assignments Modem Serial PortPassport 8132TX Module Data Port ConnectorsConnector Type Cable Specifications450-1LR MDA, 450-1LX MDA Comm Port ConnectorMDAs 450-1SR MDA, 450-1SX MDATable A-5. Passport 8148TX Port Pinouts Port ConnectorsPassport 8148TX Module GBICs Passport 8108GBIC Module1000BASE-SX Gbic Optical Specifications1000BASE-XD Gbic Figure A-1. MDI-X to MDI Cable Connections MDI and MDI-X ConnectionsFigure A-2. MDI-X to MDI-X Cable Connections Declaration of ConformityPage Figure B-1. LEDs on the Passport 8190SM Module Appendix B LEDsLabel Color/State Meaning Table B-1 LED Operation on the Passport 8190SM ModuleFigure B-2. LEDs on the Passport 8132TX and 8148TX Modules Passport 8132TX and 8148TX I/O ModulesColor/State Meaning LEDTable B-5 Port LEDs on the Passport 8108GBIC Module Page Appendix C Media Dependent Adapters Figure C-1 BASE-SX Shortwave Gigabit MDA Front Panels Series MDAsLabel Type Color/State Meaning Table C-1 1000BASE-SX MDA LEDsTable C-2 1000BASE-LX MDA LEDs 8100-4TX MDATable C-3 8100-4TX MDA LEDs Series Fiber MDAsTable C-4 Series MDA LEDs Figure C-4 Series MDA Front PanelsFigure C-5. Installing an MDA Installing an MDAUsing the Passport 8100 Modules Figure D-1. Types of GBICs Appendix D Installing GBICsFigure D-2. Installing a Gbic Installing a GbicTo remove an installed Gbic Page Appendix E RFCs and Standards Page Numbers IndexIndex-2 Index-3 Index-4