IBM 88410EU User Manual - Page 111

Troubleshooting the Ethernet controller This section provides troubleshooting information for problems that might occur with the 10/100/1000 Mbps Ethernet controller. Network connection problems If the Ethernet controller cannot connect to the network, check the following conditions: v Make sure that the cable is installed correctly. The network cable must be securely attached at all connections. If the cable is attached but the problem remains, try a different cable. If you set the Ethernet controller to operate at either 100 Mbps or 1000 Mbps, you must use Category 5 or higher cabling. v Determine whether the hub/switch supports auto-negotiation. If it does not, try configuring the integrated Ethernet controller manually to match the speed and duplex mode of the hub/switch. v Check the Ethernet controller LEDs on the rear of the server. These LEDs indicate whether there is a problem with the connector, cable, or hub/switch: - The Ethernet transmit/receive activity LED, on the rear of the server, is lit when the Ethernet controller sends or receives data over the Ethernet Network. If the Ethernet transmit/receive activity LED is off, make sure that the hub/switch and network are operating and that the correct device drivers are installed. - The Ethernet link status LED, on the rear of the server, is lit when the Ethernet controller receives a LINK pulse from the hub/switch. If the LED is off, there might be a defective connector or cable or a problem with the hub/switch. v Make sure that you are using the correct device drivers, which are supplied with the server. v Check for operating-system-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 the Ethernet controller is tested depends on which operating system you are using (see the Ethernet controller device driver readme files). Ethernet controller troubleshooting chart Use the following troubleshooting chart to find solutions to 10/100/1000 Mbps Ethernet controller problems that have definite symptoms. Description The server stops running when loading device drivers. FRU/action The PCI BIOS interrupt settings are incorrect. v Determine whether the interrupt (IRQ) setting that is 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 that is available from the World Wide Web. v Reseat or replace the adapter. Chapter 5. Diagnostics 101