IBM 8478 Hardware Maintenance Manual - Page 34

v Check for operating server-specific causes for the problem. v Make sure that the device drivers on the client and server are using the same protocol. v Test the Ethernet controller. The way you test the Ethernet controller depends on which operating system you are using (see the Ethernet controller device driver README file). Ethernet controller troubleshooting chart You can use the following troubleshooting chart to find solutions to 10/100 Mbps Ethernet controller problems that have definable symptoms. Table 3. Ethernet troubleshooting chart Ethernet controller problem Suggested Action The server stops running when loading device drivers. The PCI BIOS interrupt settings are incorrect. Check the following: v Determine if the IRQ setting assigned to the Ethernet controller is also assigned to another device in the Configuration/Setup Utility program. Although interrupt sharing is allowed for PCI devices, some devices do not function well when they share an interrupt with a dissimilar PCI device. Try changing the IRQ assigned to the Ethernet controller or the other device. For example, for NetWare Versions 3 and 4 it is recommended that disk controllers not share interrupts with LAN controllers. v Make sure that you are using the most recent device driver available from the World Wide Web. v Run the network diagnostic program. If the problem remains, call for service. The LAN activity light (when available) does not light. Check the following: v Make sure that you have loaded the network device drivers. v The network might be idle. Try sending data from this workstation. v Run diagnostics on the LEDs. v The function of this LED can be changed by device driver load parameters. If necessary, remove any LED parameter settings when you load the device drivers. 24 Hardware Maintenance Manual: xSeries 200