IBM xSeries 236 8841, Руководство пользователя

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Troubleshooting the Ethernet controller
This section provides troubleshooting information for problems that might occur with
the 10/100/1000 Mbps Ethernet controller.
Network connection problems
If the Ethernet controller cannot connect to the network, check the following
conditions:
v
Make sure that the cable is installed correctly.
The network cable must be securely attached at all connections. If the cable is
attached but the problem remains, try a different cable.
If you set the Ethernet controller to operate at either 100 Mbps or 1000 Mbps,
you must use Category 5 or higher cabling.
v
Determine whether the hub/switch supports auto-negotiation. If it does not, try
configuring the integrated Ethernet controller manually to match the speed and
duplex mode of the hub/switch.
v
Check the Ethernet controller LEDs on the rear of the server.
These LEDs indicate whether there is a problem with the connector, cable, or
hub/switch:
– The Ethernet transmit/receive activity LED, on the rear of the server, is lit
when the Ethernet controller sends or receives data over the Ethernet
Network. If the Ethernet transmit/receive activity LED is off, make sure that
the hub/switch and network are operating and that the correct device drivers
are installed.
– The Ethernet link status LED, on the rear of the server, is lit when the
Ethernet controller receives a LINK pulse from the hub/switch. If the LED is
off, there might be a defective connector or cable or a problem with the
hub/switch.
v
Make sure that you are using the correct device drivers, which are supplied with
the server.
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
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.
Description FRU/action
The server stops
running when loading
device drivers.
The PCI BIOS interrupt settings are incorrect.
v Determine whether the interrupt (IRQ) setting that is 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 that is available from the
World Wide Web.
v
Reseat or replace the adapter.
Chapter 5. Diagnostics
101