IBM 884015U Maintenance And Troubleshooting Manual

Contents

Ethernet controller troubleshooting chartUse the following troubleshooting chart to find solutions to 10/100/1000 MbpsEthernet controller problems that have definite symptoms.Description FRU/actionThe server stopsrunning when loadingdevice drivers.The PCI BIOS interrupt settings are incorrect.v Determine whether the interrupt (IRQ) setting that is assigned to the Ethernet controlleris also assigned to another device in the Configuration/Setup Utility program.Although interrupt sharing is allowed for PCI devices, some devices do not function wellwhen they share an interrupt with a dissimilar PCI device. Try changing the IRQassigned to the Ethernet controller or the other device. For example, for NetWareVersions 3 and 4, it is recommended that disk controllers not share interrupts with LANcontrollers.v Make sure that you are using the most recent device driver that is available from theWorld Wide Web.v Reseat or replace the adapter.The Ethernet link statusLED does not work.v Make sure that the hub is turned on.v Check all connections at the Ethernet controller and the hub.v Use another port on the hub.v If the hub does not support auto-negotiation, manually configure the Ethernet controllerto match the hub.v If you manually configured the Duplex mode, make sure that you also manuallyconfigure the speed.v Reseat or replace the adapter.The Ethernettransmit/receive activityLED does not work.v Make sure that you have installed the network device drivers.v The network might be idle. Try sending data from this server.Data is incorrect orsporadic.v Make sure that you are using Category 5 or higher cabling when operating the server at100 Mbps or at 1000 Mbps.v Make sure that the cables do not run close to noise-inducing sources like fluorescentlights.The Ethernet controllerstopped working whenanother adapter wasadded to the server.v Make sure that the cable is connected to the Ethernet controller.v Make sure that the PCI system BIOS code is current.v Reseat the adapter.v Determine whether the interrupt (IRQ) setting that is assigned to the Ethernet adapter isalso assigned to another device in the system. Use the Configuration/Setup Utilityprogram to determine whether this is the case.Although interrupt sharing is allowed for PCI devices, some devices do not function wellwhen they share an interrupt with a dissimilar PCI device. Try changing the IRQ that isassigned to the Ethernet adapter or the other device.v Reseat or replace the adapter.The Ethernet controllerstopped working withoutapparent cause.v Run diagnostics for the Ethernet controller.v Try a different connector on the hub.v Reinstall the device drivers. See the operating-system documentation and theServerGuide information.v Reseat or replace the adapter.Ethernet controller messagesThe integrated Ethernet controller might display messages from certain devicedrivers. The latest available information concerning these messages is at the IBMSupport Web site at http://www.ibm.com/support/.Chapter 5. Diagnostics 71