IBM 865811Y User Guide - Page 29

v Determine if the hub supports auto-negotiation. If not, try configuring the integrated Ethernet controller manually to match the speed and duplex mode of the hub. v Check the Ethernet controller lights on the operator information panel. These lights indicate whether a problem exists with the connector, cable, or hub. - The Ethernet Link Status light illuminates when the Ethernet controller receives a LINK pulse from the hub. If the light is off, there might be a bad connector or cable, or a problem with the hub. - The Ethernet Transmit/Receive Activity light illuminates when the Ethernet controller sends or receives data over the Ethernet Network. If the Ethernet Transmit/Receive Activity light is off, make sure that the hub and network are operating and that the correct device drivers are loaded. - The Ethernet Speed 100 Mbps light illuminates when the Ethernet controller LAN speed is 100 Mbps. v Make sure that you are using the correct device drivers, supplied with your 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. How 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 definite symptoms. Table 1. 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 interrupt (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. Ethernet Link Status light does not light. Check the following: v Make sure that the hub is turned on. v Check all connections at the Ethernet controller and the hub. v Check the cable. A crossover cable is required unless the hub has an X designation. v Use another port on the hub. v If the hub does not support auto-negotiation, manually configure the Ethernet controller to match the hub. v If you manually configured the duplex mode, make sure that you also manually configure the speed. v Run diagnostics on the LEDs. Diagnostics 19