IBM 8685 Hardware Maintenance Manual - Page 48

Ethernet controller troubleshooting chart, Ethernet controller, problem, FRU/actions

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v Test the Ethernet controller. How you test the Ethernet controller depends on which operating system you are using (see the Ethernet controller device driver README file). 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 5. 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 Check the following: does not work. 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 does not work. Check the following: Note: The Ethernet transmit/receive activity LED is lit only when data is sent to or by this Ethernet controller. 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. 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 system BIOS code is current. v Reseat the adapter. v Determine if the interrupt (IRQ) setting assigned to the Ethernet adapter is also assigned to another device in the system. Use the Configuration/Setup Utility program to determine if 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 assigned to the Ethernet adapter or the other device. v Reseat or replace the adapter. 38 xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide

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v
Test the Ethernet controller.
How you test the Ethernet controller depends on which operating system you are
using (see the Ethernet controller device driver README file).
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 5. 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
does not work.
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 does not work.
Check the following:
Note:
The Ethernet transmit/receive activity LED is lit only when data is sent to or by this
Ethernet controller.
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.
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 system BIOS code is current.
v
Reseat the adapter.
v
Determine if the interrupt (IRQ) setting assigned to the Ethernet adapter is also assigned
to another device in the system. Use the Configuration/Setup Utility program to
determine if 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
assigned to the Ethernet adapter or the other device.
v
Reseat or replace the adapter.
38
xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide