IBM xSeries 300, Hardware Maintenance Manual

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Table 2. 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 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.
The LAN activity light
(when available) does
not light. 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
workstation.
v
Run diagnostics on the LEDs.
v
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:
v
Make sure that you are using Category 5 cabling when
operating the server at 100 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 server BIOS is current.
v
Reseat the adapter.
v
Determine if the 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.
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. Refer to your operating system
documentation and to the ServerGuide information.
Chapter 3. Diagnostics
23