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Troubleshooting the Ethernet controller
This section provides troubleshooting information for
problems that might occur with the 10/100 Mbps Ethernet
controller.
Network connection problems:
controller cannot connect to the network, check the
following:
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
persists, try a different cable.
If you set the Ethernet controller to operate at 100
Mbps, you must use Category 5 cabling.
If you directly connect two workstations (without a
hub), or if you are not using a hub with X ports, use a
crossover cable.
Note
To determine whether a hub has an X port,
check the port label. If the label contains an X,
the hub has an X port.
Determine if the hub supports auto-negotiation. If not,
try configuring the integrated Ethernet controller
manually to match the speed and duplex mode of the
hub.
Check the Ethernet controller lights on the operator
information panel.
These lights indicate whether a problem exists with
the connector, cable, or hub.
–
The Ethernet Link Status light illuminates when
the Ethernet controller receives a LINK pulse
from the hub. If the light is off, there might be a
bad connector or cable, or a problem with the
hub.
–
The Ethernet Transmit/Receive Activity light
illuminates when the Ethernet controller sends or
receives data over the Ethernet Network. If the
Ethernet Transmit/Receive Activity light is off,
make sure that the hub and network are
operating and that the correct device drivers are
loaded.
–
The Ethernet Speed 100 Mbps light illuminates
when the Ethernet controller LAN speed is
100 Mbps.
Make sure that you are using the correct device
drivers, supplied with the server.
Check for operating system-specific causes for the
problem.
Make sure that the device drivers on the client and
server are using the same protocol.
54
xSeries 240 HMM
If the Ethernet
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Troubleshooting
