v
Make sure that the device drivers on the client and server are using the same
protocol.
v
Test the Ethernet controller.
The way the Ethernet controller is tested depends on which operating system
you are using (see the Ethernet controller device driver README files).
Ethernet controller troubleshooting chart
Use the following troubleshooting chart to find solutions to 10/100/1000 Mbps
Ethernet controller problems that have definite symptoms.
Table 6. 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
is off.
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 is off.
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.
Chapter 3. Diagnostics
39
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