Table of Contents
Advertisement
2. Check for loose cables in the power subsystem. Also check for short circuits, for
3. Remove adapters and disconnect the cables and power connectors to all
4. Reconnect all ac power cords and turn on the server. If the server starts up
To use this method, it is important to know the minimum configuration required for a
system to start (see page 119).
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.
v Determine whether the hub supports auto-negotiation. If it does not, try
v Check the Ethernet controller LEDs on the rear of the server.
v Make sure that you are using the correct device drivers, which are supplied with
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
Use the following troubleshooting chart to find solutions to 10/100/1000 Mbps
Ethernet controller problems that have definite symptoms.
80
xSeries 336 Type 1879 and Type 8837: Hardware Maintenance Manual and Troubleshooting Guide
example, if there is a loose screw causing a short circuit on a circuit board.
internal and external devices until the server is at the minimum configuration
required to start the server (see "Minimum operating requirements" on page
119).
successfully, replace adapters and devices one at a time until the problem is
isolated. If the server does not start up from the minimal configuration, replace
FRUs of minimal configuration one at a time until the problem is isolated.
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.
configuring the integrated Ethernet controller manually to match the speed and
duplex mode of the hub.
These LEDs indicate whether there is a problem with the connector, cable, or
hub:
– 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 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. If the LED is off, there
might be a defective connector or cable or a problem with the hub.
the server.
protocol.
The way the Ethernet controller is tested depends on which operating system
you are using (see the Ethernet controller device driver readme files).
Advertisement
Table of Contents
Troubleshooting
