IBM 866631Y - Netfinity 7100 - 8666 Hardware Maintenance Manual page 34

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Hardware Maintenance Manual: Netfinity 7100 – Type 8666
Table 2. Ethernet troubleshooting chart
Ethernet controller
problem
The server stops running
when loading device
drivers.
Ethernet Link Status
light does not light.
The Ethernet Transmit/
Receive Activity light
does not light.
Data is incorrect or
sporadic.
The Ethernet controller
stopped working when
another adapter was
added to the server.
Suggested Action
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.
Check the following:
v Make sure that the hub is turned on.
v Check all connections at the Ethernet controller and the hub.
v Check the cable. A crossover cable is required unless the hub
has an X designation.
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.
Check the following:
Note: The Ethernet Transmit/Receive Activity LED illuminates
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
workstation.
v Run diagnostics on the LEDs.
v The function of this LED can be changed by device driver
load parameters. If necessary, remove any LED parameter
settings when you load the device drivers.
Check the following:
v Make sure that you are using Category 5 cabling when
operating the server at 100 Mbps.
v Make sure that the cables do not run close to noise-inducing
sources like fluorescent lights.
Check the following:
v Make sure that the cable is connected to the Ethernet
controller.
v Make sure that the PCI system BIOS 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
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 adapter or the other device.