Ethernet Controller Troubleshooting Chart - IBM 8646 - Eserver xSeries 220 Hardware Maintenance Manual

v Determine if the hub supports auto-negotiation. If not, try configuring the
v Check the LAN activity light on the rear of the server. The LAN activity light
v Make sure that you are using the correct device drivers, supplied with your
v Check for operating system-specific causes for the problem.
v Make sure that the device drivers on the client and server are using the same
v Test the Ethernet controller.

Ethernet controller troubleshooting chart

You can use the following troubleshooting chart to find solutions to 10/100 Mbps
Ethernet controller problems that have definite symptoms.
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Hardware Maintenance Manual: xSeries 220 Type 8646
integrated Ethernet controller manually to match the speed and duplex mode of
the hub.
illuminates when the Ethernet controller sends or receives data over the Ethernet
network. If the LAN activity light is off, make sure that the hub and network are
operating and that the correct device drivers are loaded.
server.
protocol.
How you test the Ethernet controller depends on which operating system you
are using (see the Ethernet controller device driver README file).
Table 3. Ethernet troubleshooting chart
Ethernet Suggested Action
controller
problem
The server stops The PCI BIOS interrupt settings are incorrect.
running when
Check the following:
loading device
v Determine if the interrupt (IRQ) setting assigned to the Ethernet
drivers.
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 Check the following:
v Make sure that you have loaded the network device drivers.
light does not
v The network might be idle. Try sending data from this workstation.
light.
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 Check the following:
v Make sure that you are using Category 5 cabling when operating
or sporadic.
the server at 100 Mbps.
v Make sure that the cables do not run close to noise-inducing sources
like fluorescent lights.