IBM 866441Y - Netfinity 5600 - 8664, Hardware Maintenance Manual

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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:
If the Ethernet
controller cannot connect to the network, check the
following:
Ÿ
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.
Ÿ
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.
Ÿ
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.
Ÿ
Make sure that you are using the correct device
drivers, supplied with the server.
Ÿ
Check for operating system-specific causes for the
problem.
Ÿ
Make sure that the device drivers on the client and
server are using the same protocol.
Netfinity 5600 - Type 8664
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