IBM 847651U Handbook - Page 253

Troubleshooting Note: The amber LED might remain lit if the link is broken during activity. 10/100 Mbps Ethernet controller troubleshooting chart You can use the following troubleshooting chart to find solutions to Ethernet controller problems that have definite symptoms. Controller problems The Configuration/Setup Utility program reports the Ethernet controller interrupt utility as 0 or 255. The Configuration/Setup Utility program reports No PCI Bus. The server stops running when loading device drivers. The diagnostics are completed successfully, but the connection fails. Action The PCI BIOS is not configuring the Ethernet controller or adapter correctly. The PCI BIOS interrupt settings are incorrect. Check for interrupt conflicts with ISA devices. If conflicts are found, reserve the ISA interrupts (see "ISA Legacy Resources" on page 55) so that the PCI BIOS will assign another nonconflicting PCI interrupt value. The Configuration/Setup Utility program has been run on another computer that does not have any PCI slots. Run the Configuration/Setup Utility program on your server so that the PCI BIOS will configure the Ethernet controller or adapter correctly. The PCI BIOS interrupt settings are incorrect. Check for interrupt conflicts with ISA devices. If conflicts are found, reserve the ISA interrupts (see "ISA Legacy Resources" on page 55) so that the PCI BIOS will assign another nonconflicting PCI interrupt value. 1. Make sure that you are using Category 5 Ethernet cabling when operating the server at either 10 Mbps or 100 Mbps. 2. Make sure that the network cable is securely attached. 3. Make sure that the client and server device drivers are using the same network protocol. Chapter 5. Solving problems 219