IBM 5000 - Manual (Page 158)

Troubleshooting
10/100 Mbps Ethernet Controller Troubleshooting Chart
You can use the following troubleshooting chart to find solutions to 10/100 Mbps
Ethernet problems that have definite symptoms.
Controller Problem Action
The server stops running
when loading device drivers. The PCI BIOS interrupt settings are incorrect.
Check the following:
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. (See “Resolving
Configuration Conflicts” on page 152.)
For NetWare and IntraNetware, do not use IRQ 14 or 15 for PCI
devices. IRQ 14 is used for IDE devices (CD-ROM drive). If the
IDE CD-ROM in your system is disabled, reserve IRQ 14 as ISA
Legacy in the Plug and Play menu of the Configuration/Setup
Utility program. (See “Plug and Play” on page 30.) IRQ 15
should be reserved for ISA legacy devices.
Make sure that you are using the most recent device driver
available from the World Wide Web. (See the “Getting Help
Information” section of this
Server Library for World Wide Web
addresses.)
Run the network diagnostic program.
If the problem still exists, have the system serviced.
Ethernet Link Status light
does not light. Check the following:
Make sure that the hub is turned on.
Check all connections at the Ethernet and the hub.
Check the cable. A crossover cable is required unless the hub
has an
X designation.
Use another port on the hub.
If the hub does not support auto-negotiation, manually configure
the Ethernet controller to match the hub.
If you manually configured the duplex mode, make sure that you
also manually configure the speed.
Run diagnostics for the LEDs.
If the problem still exists, have the system serviced.
The Ethernet
Transmit/Receive Activity
light does not light. Check the following:
Note: The Ethernet Transmit/Receive Activity LED illuminates only
when data is sent to or by this Ethernet controller.
Make sure that you have loaded the network device drivers.
The network might be idle. Try sending data from this workstation.
Run diagnostics on the LEDs.
The function of this LED can be changed through device driver
load parameters. If necessary, remove any LED parameter
settings when you load the device drivers.
Data is incorrect or sporadic. Check the following:
Make sure that you are using Category 5 cabling when operating
the server at 100 Mbps.
Make sure that the cables do not run close to noise-inducing
sources like fluorescent lights.
150 Netfinity 5000 Server Hardware Information and Procedures