IBM xSeries 236 8841, User Manual

Page: 112 / 210

Description FRU/action
The Ethernet link status
LED does not work.
v
Make sure that the hub/switch is turned on.
v Check all connections at the Ethernet controller and the hub/switch.
v
Use another port on the hub/switch.
v If the hub/switch does not support auto-negotiation, manually configure the Ethernet
controller to match the hub/switch.
v If you manually configured the Duplex mode, make sure that you also manually
configure the speed.
The Ethernet
transmit/receive activity
LED does not work.
v
Make sure that you have installed the network device drivers.
v
The network might be idle. Try sending data from this server.
Data is incorrect or
sporadic.
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.
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.
The Ethernet controller
stopped working without
apparent cause.
v Try a different port on the hub/switch.
v
Reinstall the device drivers. See the operating-system documentation and the
ServerGuide information.
Ethernet controller messages
The integrated Ethernet controller might display messages from certain device
drivers. The latest available information concerning these messages is at the IBM
Support Web site at http://www.ibm.com/support/.
102
xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide