Intel 10/100 manual General Problems

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C H A P T E R 4

Intel Express 10/100 Fast Ethernet Switch

General Problems

If you’re having problems with the switch, follow the steps below:

1Verify that your cables are wired correctly. This is the most common problem. Use a UTP crossover cable to directly connect to a repeater or another switch. Use straight-through cables when connecting to servers or workstations. Try both the MDI and MDI-X connectors on port 1 if you’re unsure of which cable to use. See page 8 for more information.

2Make sure the unit is plugged into a functioning AC outlet. Also, make sure the voltage setting next to the switch’s power receptacle is set correctly. In the United States, Canada, and Japan the setting is 115. In most European and Asian countries, it’s 230.

3Review the switch’s Link LEDs to ensure the ports you believe should be functioning are properly configured and not disabled. Also, review the Link LEDs of other devices to ensure the ports that should be functioning are properly attached to the switch.

4Make sure devices connected to the switch are operating at the same speed as the switch port. Each switch port can be forced to either 10 or 100 Mbps (although auto-detect is the default). Also, other devices connected to the switch may be capable of operating at 10 or 100 Mbps. See page 66 for information on setting speed.

5If you configured a port for full duplex, make sure the device on the other end is configured for full duplex and is capable of transmitting in full duplex. Repeaters/hubs/concentrators can’t operate in full duplex mode.

6Make sure the equipment attached to the switch is properly configured. If the Coll LED is on continuously (and you don’t have full duplex configured), you may have an adapter problem.

7Use the Console Manager to check the switch’s status. Use the sys-statcommand to check overall system status and get-port-cfgto check the status of each port. To monitor traffic, use the switching statistics commands (see page 25).

8You can also use a protocol analyzer to check monitor statistics. If the port is configured in half-duplex mode, place a hub between the switch and the other device and attach the protocol analyzer to the hub. If the port is configured in full-duplex mode, place a tap between the device and switch and then attach a protocol analyzer to the tap. Contact your network services supplier for information on protocol analyzers and taps.

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Contents User Guide First edition Contents Chapter Troubleshooting Connect the network devices to the switch Check the LEDs for power and linksNext steps Optional Press Eand log into the Console Manager Baud Data bits No parity Stop bit Xon/Xoff flow controlOverview TopologyIntel Express 10/100 Fast Ethernet Switch Installation and SetupRcv Using the SwitchPort status LEDs XmtLink Management status LEDsCabling Requirements UTP requirementsFiber optic requirements NIC RJ-45 MDI Straight-through vs. crossover cablesDetermining which cable to use Configuring the mixed 10 Mbps workgroup environment Typical ConfigurationsConfiguration guidelines A P T E R 1 Intel Express 10/100 Fast Ethernet Switch Full duplex and flow control between Express 10/100 switches Repeater count limitations General rule forOne repeater hop for Configuring Accessing the Console Manager remotely Accessing the Console ManagerUsing the Console Manager Entering commandsMeans you can type one of the following Vlan Console Manager command groups Sample Console Manager Session Procedures using this diagramSet the IP configuration. Type the command Configuring the Snmp agent for IPCommands used To configure the Snmp agentConfiguring a port for full duplex To configure a port for full duplexRecommended environments To create an Svlan Creating Virtual LANs VLANsTo create a VBD Create the two SVLANs. Type the commandsMonitoring traffic To check traffic on a port Detecting speed mismatches Detecting faulty adapters or hub portsDetecting bad or poor quality cable Detecting congested segmentsStatistic Definitions Configuring and Managing the Switch Reference Group to display commands relevant to that groupConsole Command-line Summary Console CommandsSystem Commands IP Commands Snmp Commands Virtual LAN Vlan Commands Switching Database CommandsSpanning Tree Commands Switching Statistics Commands Port Configuration CommandsLogout Console CommandsHelp-kbd BannerSystem Commands Set-passwdSys-stat Set-stst-level Warm-resetCold-reset Get-stst-levelSet-sw-file Init-nvramSet-line-slip Get-sw-fileSw-dnld Set-rsw-fileGet-tftp-srvr Set-tftp-srvrIP configuration IP CommandsSet-ip-conf Get-bootpSet-bootp Set-ipGet-gatew Get-slip-confSet-slip Set-slip-confStops the active ping process. You can also press cC Ping CommandsPing Ping-stopDel-arp-entry Address Resolution Protocol ARP CommandsGet-arp-tbl Add-arp-entrySet-comm Snmp CommandsSnmp community strings Get-commGet-traps Snmp trap message commandsGet-auth Set-authRemoves a station from the trap table Switching Database CommandsAdd-trap Del-trapGet-lt-entry Database control commandsFF-FF-FF-FF-FF-FF Get-lt-16Add-lt-entry Find-lt-addrDel-lt-entry Del-lt-addrCustom filtering Get-lt-ageSet-lt-age Add-cf-entry Get-lt-filterDisplays the custom filter table stored in Nvram Vlan CommandsDel-cf-entry Get-nv-cftblGet-vbc-matrix Get-con-matrixSet-sec-vlan Set-vbc-domainDel-vbc-domain Get-vbc-tblMonitor Get-svlan-tblDisplays the table of defined SVLANs Set-mon-portExample Spanning Tree CommandsGet-stp Set-stpGet-st-bcfg Get-st-pcfg Get-st-syscfgDisplays the spanning tree state for all ports Set-br-prio Set-br-maxageSet-br-hellot Set-prt-pcost Set-br-fwdelSet-prt-prio Set-prt-enbGet-port-cfg Port Configuration CommandsUse these commands to configure and display port settings Displays the current port configurationSet-port-fctrl Statistics CommandsSet-port-dplex Set-speed-selGet-colls-cnt Get-eth-cntGet-br-cnt Get-rmon-cntGet-sdist-cnt Displays the Rmon statistics packet size histogram for port 2905033 Bytes Received Get-mgm-brcnt Troubleshooting General Problems Troubleshooting Flow Control ProblemsIntel Express 10/100 Fast Ethernet Switch System Default ConfigurationSpanning tree Not installed see Accessories on nextPorts Console ManagerStatus Indicators per port SpecificationsFeatures AccessoriesMaximum Cabling Distances General IndicatorsBoot and Configuration Connector InterfacesAC line frequency 47Hz-63Hz Fuse 100-120V/4A 200-240V/2A Electrical SpecificationsPower Cord Specifications Electromagnetic Emissions and Safety Agency ApprovalSnmp and MIB Support Limited Hardware Warranty Limited Hardware Warranty Europe only Avertissement Warnung Displaying current state, 44 enabling or disabling IndexControl commands Get-authcommandGet-bootpcommand Database, switchingGet-trapscommand Get-port-cfgcommand, 22Get-slipcommand Get-stpcommandMIB Set-commcommandSet-slipcommand Set-stpcommandXmt Transmit LED Troubleshooting Software updates Installation notes How to accessWorld Wide Web & Internet FTP Intel BBS
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