IBM eServer xSeries 235 Type 8671, Maintenance & Troubleshooting

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Table 5. Ethernet troubleshooting chart
Ethernet controller
problem FRU/actions
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.
v
Reseat or replace the adapter.
Ethernet link status LED
does not work. Check the following:
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 Run diagnostics on the LEDs.
v Reseat or replace the adapter.
The Ethernet
transmit/receive activity
LED does not work. 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 server.
v Run diagnostics on the LEDs.
Data is incorrect or
sporadic. Check the following:
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.
The Ethernet controller
stopped working when
another adapter was
added to the server. Check the following:
v Make sure that the cable is connected to the Ethernet controller.
v Make sure that your PCI system BIOS code is current.
v Reseat the adapter.
v
Determine if the interrupt (IRQ) setting assigned to the Ethernet adapter is also assigned
to another device in the system. Use the Configuration/Setup Utility program to
determine if 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
assigned to the Ethernet adapter or the other device.
v Reseat or replace the adapter.
The Ethernet controller
stopped working without
apparent cause. Check the following:
v Run diagnostics for the Ethernet controller.
v Try a different connector on the hub.
v Reinstall the device drivers. See your operating-system documentation and the
ServerGuide information.
v Reseat or replace the adapter.
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xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide