Diagnostics 19
Ethernet Link
Sta tu s lig ht
does not
light.
Chec k the following:
• Make sure that the hub is turned on.
• Check all connections at the Ethernet
c ontroller and the hub.
• Check the cable. A crossover cable
is required unless the hub has an
X
designation.
• Us e another po rt on the hub.
• If the hub d oes not support auto-
negotiation, manually configure the
Etherne t cont ro ller to match the h ub.
• If you manually configured the duplex
mode, make sure that you also
m anually configure the speed.
• Run diagnostics on the LEDs.
The Ethernet
Transmit/
Receive
Activ i ty lig h t
does not
light.
Chec k 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 id le. Try
sendin g da ta fr o m thi s wor k s tat ion.
• Run diagnostics on the LEDs.
• The fu nction of this LED c a n be
changed by device driver load
parameters. If necessary, remove
any LED parameter settings when
you load the device drivers.
Data is
incorrect or
sporadic.
Chec k the following:
• Make sure that you are using
Cat eg or y 5 cab lin g w he n op eratin g
the server at 10 0 Mbps.
• Make su re that the cables do not run
close to noise-inducing sources like
fluorescent lights.

Table 1. Ethernet troubleshooting chart

Ethernet
controller
problem
Suggested Action