Sun Microsystems Sun Quad manual Auto-Negotiation

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Auto-Negotiation

A key feature of the Sun Quad FastEthernet PCI adapter is auto-negotiation. The auto-negotiationprotocol, as specified by the 100BASE-T standard, selects the operation mode (half-duplex or full-duplex), and the auto-sensing protocol selects the speed (10 Mbps or 100 Mbps) for the adapter.

The link speed and modes supported by the Sun Quad FastEthernet PCI adapter are listed as follows in decreasing order of priority:

■100 Mbps, full-duplex

■100 Mbps, half-duplex

■10 Mbps, full-duplex

■10 Mbps, half-duplex

When the system is booted, the Sun Quad FastEthernet PCI adapter advertises these capabilities to the Link Partner at the other end of the link (a hub, switch, or another network interface card (NIC) in a host system). If the Link Partner also supports auto-negotiation, it will advertise its capabilities over the link. The common highest priority mode supported by both sides will be selected automatically for the link operation.

The qfe device driver operates the SUNW,qfe devices by default in half-duplex mode only. If the Sun Quad FastEthernet PCI adapter is connected to a remote system or interface that is not capable of auto-negotiation, your system automatically selects the speed and half-duplex mode.

If the Sun Quad FastEthernet PCI adapter is connected to a link partner with which the auto-negotiation protocol fails to operate successfully, you can configure the device to not use this protocol and force the driver to set up the link in the mode and speed of your choice.

Chapter 3 Configuring the Driver Software 17

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Contents Sun Quad FastEthernet PCI Adapter Installation User’s Guide Please Recycle Regulatory Compliance Statements DOC Class a Notice Avis DOC, Classe a EMC Page Contents Specifications Running Diagnostics Tests Page How This Book Is Organized PrefaceRelated Documents Unix CommandsShell Prompts Typographic ConventionsSun Welcomes Your Comments Ordering Sun DocumentsTable P-1SunExpress Contact Information 1Sun Quad FastEthernet PCI adapter Product Overview2Sun Quad FastEthernet PCI adapter Back Panel Features1Hardware and Software Requirements Checking the OpenBoot Prom Revision LevelDisplaying the OpenBoot Prom Revision Level Hardware and Software RequirementsPage Using a text editor, add the following line to the end Installing the AdapterInstalling the Adapter Ok show-devs Verifying the InstallationExamining Network Activity Perform a reconfiguration boot on the system Rebooting the SystemPage Installing the Driver Software Configuring the Driver SoftwareConfiguring the Host Files Etc/hosts file # cat /etc/hosts Reboot your systemAt the ok prompt type Booting From the NetworkAs superuser root, type Post-Installation Procedures OptionalConfiguring Driver Parameters Increasing TCP/IP PerformanceType Forcing Network Speed Between 10 Mbps and 100 MbpsAuto-Negotiation Local-mac-address Property Physical Dimensions SpecificationsTable A-1Physical Dimensions Table A-3Performance Specifications Power RequirementsPerformance Specifications Table A-2Power RequirementsEthernet channels Interface SignalsPage Internal Transceiver Configuring the Quad FastEthernet Device Driver ParametersQfe Driver Parameter, Status, and Descriptions Driver Parameter Values and DefinitionsTable B-2Read-Only Parameters Defining the Current Status Defining the Current StatusInter-Packet Gap Parameters Table B-1qfe Driver Parameter, Status, and DescriptionsIpg1 = 8 default at initialization Table B-5Operational Mode Parameters Operational Mode ParametersTable B-4Parameters Defining lancemode and ipg0 Table B-7Read-Only Transceiver Capabilities Defining the Number of Back-to-Back Packets to TransmitReporting Transceiver Capabilities Table B-6Back-to-back Packet Transmission CapabilityTable B-8Read-Only Link Partner Capabilities Reporting the Link Partner CapabilitiesSetting Parameters Using the ndd Utility Setting qfe Driver ParametersUse the instance number to select the device To Specify the Device Instance for the ndd UtilityTo modify a parameter value, use the -setoption Using the ndd Utility in Non-Interactive Mode# ndd /dev/qfe \? Setting Forced Mode Table B-9Setting Variables in the /etc/system File Setting Parameters in the /etc/system FileSetting the ipg1 and ipg2 Parameters Setting Parameters Using the qfe.conf FileEtc/pathtoinst file Setting ipg Driver Parameters Using a qfe.conf FileKernel/drv/qfe.conf file Set the ipg1 and ipg2 parameters for the above four devicesUsing the OpenBoot Prom FCode Selftest Running Diagnostics TestsType show-devsto display the list of devices Running the Ethernet FCode Selftest DiagnosticReset the system Shut down the systemOk setenv diag-switch? false Reset and reboot the system Set the auto-boot?configuration parameter to trueCreating, 12 editing, 11 examples IndexEditing Editing, 11 exampleLEDs Watch-net-all output Page Ordering Sun Documents AIR Mail PAR Avion