Ethernet Controller Troubleshooting Chart - IBM 84885BU Maintenance And Troubleshooting Manual

v Test the Ethernet controller.

Ethernet controller troubleshooting chart

Use the following troubleshooting chart to find solutions to 10/100/1000 Mbps
Ethernet controller problems that have definite symptoms.
Ethernet controller
problem
The server stops
running when loading
device drivers.
The Ethernet link status
LED does not work.
The Ethernet
transmit/receive activity
LED does not work.
Data is incorrect or
sporadic.
The Ethernet controller
stopped working when
another adapter was
added to the server.
The Ethernet controller
stopped working without
apparent cause.
22
xSeries 226 Type 8488 and 8648: Hardware Maintenance Manual and Troubleshooting Guide
The way the Ethernet controller is tested depends on which operating system
you are using (see the Ethernet controller device driver readme files).
FRU/actions
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.
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 controller
to match the hub.
v If you manually configured the Duplex mode, make sure that you also manually
configure the speed.
v Reseat or replace the adapter.
v Make sure that you have installed the network device drivers.
v The network might be idle. Try sending data from this server.
v Make sure that you are using Category 5 or higher cabling when operating the server at
100 Mbps or at 1000 Mbps.
v Make sure that the cables do not run close to noise-inducing sources like fluorescent
lights.
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 is
also assigned to another device in the system. Use the Configuration/Setup Utility
program to determine whether this is the case.
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 that is
assigned to the Ethernet adapter or the other device.
v Reseat or replace the adapter.
v Try a different connector on the hub.
v Reinstall the device drivers. See the operating-system documentation and the
™
ServerGuide information.
v Reseat or replace the adapter.