Intel 10/100 manual Configuring a port for full duplex, Recommended environments

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C H A P T E R 2

Intel Express 10/100 Fast Ethernet Switch

NOTE

You must have a point-to- point connection to establish a full-duplex connection (shared hubs/repeaters/ concentrators aren’t capable of full duplex). Additionally, both points of the connection must be configured for full duplex.

NOTE

Setting a port to full duplex automatically disables flow control. Since collisions don’t occur on a full-duplex link, flow control isn’t possible.

One exception is between two Express 10/100 switches. Special information is added to packets traveling between switches to accomplish this.

The Coll/Fdpx LED is solid green when the port is configured for full duplex.

Configuring a port for full duplex

Configuring a port for full duplex allows the switch to send and receive packets simultaneously with the destination device. To establish a full-duplex link, the switch and the destination device both must be configured for full duplex.

Additionally, the link must be to a switch, workstation, or server. You can’t establish a full-duplex link to a device that broadcasts incoming packets to every port on the device. This excludes shared hubs, repeaters, or concentrators from using full duplex.

Commands used

get-port-cfg

set-speed-sel <port> {asense10100} set-port-dplex <port> {fullhalf}

Recommended environments

Full duplex is best when two devices exchange information to and from each other (such as a file server). In the diagram on page 20, the Payroll and Finance 100 Mbps workgroups frequently copy files to and from the file server on port 5.

To configure a port for full duplex

1Configure the device on the other end for full duplex. In the diagram on page 20, you’d configure the adapter in the file server for full duplex.

2Get the current port settings using the get-port-cfgcommand. If the port is set to autosense the speed (asense is the default) then you must set the speed to either 10 or 100. This example sets port 5 to 100 Mbps.

set-speed-sel 5 100

3Set the port to full duplex. (This command fails is you haven’t manually changed the speed to 10 or 100).

set-port-dplex 5 full

4Check the Coll/Fdpx LED. It should be solid green, indicating full duplex.

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Contents User Guide First edition Contents Chapter Troubleshooting Next steps Optional Connect the network devices to the switchCheck the LEDs for power and links Baud Data bits No parity Stop bit Xon/Xoff flow control Press Eand log into the Console ManagerTopology OverviewInstallation and Setup Intel Express 10/100 Fast Ethernet SwitchXmt Using the SwitchPort status LEDs RcvManagement status LEDs LinkFiber optic requirements Cabling RequirementsUTP requirements Straight-through vs. crossover cables NIC RJ-45 MDIDetermining which cable to use Typical Configurations Configuring the mixed 10 Mbps workgroup environmentConfiguration guidelines A P T E R 1 Intel Express 10/100 Fast Ethernet Switch Full duplex and flow control between Express 10/100 switches One repeater hop for Repeater count limitationsGeneral rule for Configuring Accessing the Console Manager Accessing the Console Manager remotelyMeans you can type one of the following Using the Console ManagerEntering commands Vlan Console Manager command groups Procedures using this diagram Sample Console Manager SessionTo configure the Snmp agent Configuring the Snmp agent for IPCommands used Set the IP configuration. Type the commandRecommended environments Configuring a port for full duplexTo configure a port for full duplex Creating Virtual LANs VLANs To create an SvlanCreate the two SVLANs. Type the commands To create a VBDMonitoring traffic To check traffic on a port Detecting congested segments Detecting faulty adapters or hub portsDetecting bad or poor quality cable Detecting speed mismatchesStatistic Definitions Configuring and Managing the Switch Group to display commands relevant to that group ReferenceSystem Commands Console Command-line SummaryConsole Commands IP Commands Snmp Commands Switching Database Commands Virtual LAN Vlan CommandsSpanning Tree Commands Port Configuration Commands Switching Statistics CommandsBanner Console CommandsHelp-kbd LogoutSys-stat System CommandsSet-passwd Get-stst-level Warm-resetCold-reset Set-stst-levelGet-sw-file Init-nvramSet-line-slip Set-sw-fileSet-tftp-srvr Set-rsw-fileGet-tftp-srvr Sw-dnldIP Commands IP configurationSet-ip Get-bootpSet-bootp Set-ip-confSet-slip-conf Get-slip-confSet-slip Get-gatewPing-stop Ping CommandsPing Stops the active ping process. You can also press cCAdd-arp-entry Address Resolution Protocol ARP CommandsGet-arp-tbl Del-arp-entryGet-comm Snmp CommandsSnmp community strings Set-commSet-auth Snmp trap message commandsGet-auth Get-trapsDel-trap Switching Database CommandsAdd-trap Removes a station from the trap tableDatabase control commands Get-lt-entryGet-lt-16 FF-FF-FF-FF-FF-FFDel-lt-addr Find-lt-addrDel-lt-entry Add-lt-entrySet-lt-age Custom filteringGet-lt-age Get-lt-filter Add-cf-entryGet-nv-cftbl Vlan CommandsDel-cf-entry Displays the custom filter table stored in NvramGet-con-matrix Get-vbc-matrixGet-vbc-tbl Set-vbc-domainDel-vbc-domain Set-sec-vlanSet-mon-port Get-svlan-tblDisplays the table of defined SVLANs MonitorSpanning Tree Commands ExampleGet-st-bcfg Get-stpSet-stp Displays the spanning tree state for all ports Get-st-pcfgGet-st-syscfg Set-br-hellot Set-br-prioSet-br-maxage Set-prt-enb Set-br-fwdelSet-prt-prio Set-prt-pcostDisplays the current port configuration Port Configuration CommandsUse these commands to configure and display port settings Get-port-cfgSet-speed-sel Statistics CommandsSet-port-dplex Set-port-fctrlGet-eth-cnt Get-colls-cntDisplays the Rmon statistics packet size histogram for port Get-rmon-cntGet-sdist-cnt Get-br-cnt2905033 Bytes Received Get-mgm-brcnt Troubleshooting General Problems Flow Control Problems TroubleshootingIntel Express 10/100 Fast Ethernet Switch Default Configuration SystemConsole Manager Not installed see Accessories on nextPorts Spanning treeAccessories SpecificationsFeatures Status Indicators per portConnector Interfaces General IndicatorsBoot and Configuration Maximum Cabling DistancesElectromagnetic Emissions and Safety Agency Approval Electrical SpecificationsPower Cord Specifications AC line frequency 47Hz-63Hz Fuse 100-120V/4A 200-240V/2ASnmp and MIB Support Limited Hardware Warranty Limited Hardware Warranty Europe only Avertissement Warnung Index Displaying current state, 44 enabling or disablingDatabase, switching Get-authcommandGet-bootpcommand Control commandsGet-stpcommand Get-port-cfgcommand, 22Get-slipcommand Get-trapscommandSet-commcommand MIBXmt Transmit LED Set-slipcommandSet-stpcommand World Wide Web & Internet FTP Intel BBS Troubleshooting Software updates Installation notesHow to access