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22 Hardware Maintenance Manual: xSeries 220
Ethernet controller
problem
Suggested Action
The server stops
running when loading
device drivers.
The PCI BIOS interrupt settings are incorrect.
Check the following:
• 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.
• Make sure that you are using the most recent device driver
available from the World Wide Web.
• Run the network diagnostic program.
If the problem remains, call for service.
The LAN activity light
does not light.
Check the following:
• Make sure that you have loaded the network device drivers.
• The network might be idle. Try sending data from this
workstation.
• Run diagnostics on the LEDs.
• The function of this LED can be changed by device driver load
parameters. If necessary, remove any LED parameter settings
when you load the device drivers.
Data is incorrect or
sporadic.
Check the following:
• Make sure that you are using Category 5 cabling when
operating the server at 100 Mbps.
• 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:
• Make sure that the cable is connected to the Ethernet controller.
• Make sure that your PCI system BIOS is current.
• Reseat the adapter.
• Determine if the interrupt (IRQ) setting assigned to the Ethernet
adapter 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 adapter or the other device.
If the problem remains, call for service.
Table 3. Ethernet troubleshooting chart.