IBM 8676 Hardware Maintenance Manual - Page 40

Ethernet, controller, troubleshooting, chart

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Ethernet controller troubleshooting chart Use the following troubleshooting chart to find solutions to 10/100/1000 Mbps Ethernet controller problems that have definite symptoms. Table 3. Ethernet troubleshooting chart Ethernet controller problem FRU/actions The server stops running when loading device drivers. 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. v Reseat or replace the adapter. Ethernet link status LED Check the following: does not work. v Make sure that the hub is turned on. v Check all connections at the Ethernet controller and the hub. 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. v Reseat or replace the adapter. Data is incorrect or sporadic. Check the following: v Make sure that you are using Category 5 or higher cabling when operating the server at 100 Mbps or at 1000 Mbps. v Make sure that the cables do not run close to noise-inducing sources like fluorescent lights. The Ethernet controller stopped working when another adapter was added to the server. Check the following: v Make sure that the cable is connected to the Ethernet controller. v Make sure that the PCI system BIOS code 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 system. Use the Configuration/Setup Utility program to determine if this is the case. 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. v Reseat or replace the adapter. The Ethernet controller Check the following: stopped working without v Run diagnostics for the Ethernet controller. apparent cause. v Try a different connector on the hub. v Reinstall the device drivers. See the operating-system documentation and the ServerGuide information. v Reseat or replace the adapter. 30 xSeries 335 Type 8676, Type 8830: Hardware Maintenance Manual and Troubleshooting Guide

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Ethernet
controller
troubleshooting
chart
Use
the
following
troubleshooting
chart
to
find
solutions
to
10/100/1000
Mbps
Ethernet
controller
problems
that
have
definite
symptoms.
Table
3.
Ethernet
troubleshooting
chart
Ethernet
controller
problem
FRU/actions
The
server
stops
running
when
loading
device
drivers.
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.
v
Reseat
or
replace
the
adapter.
Ethernet
link
status
LED
does
not
work.
Check
the
following:
v
Make
sure
that
the
hub
is
turned
on.
v
Check
all
connections
at
the
Ethernet
controller
and
the
hub.
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.
v
Reseat
or
replace
the
adapter.
Data
is
incorrect
or
sporadic.
Check
the
following:
v
Make
sure
that
you
are
using
Category
5
or
higher
cabling
when
operating
the
server
at
100
Mbps
or
at
1000
Mbps.
v
Make
sure
that
the
cables
do
not
run
close
to
noise-inducing
sources
like
fluorescent
lights.
The
Ethernet
controller
stopped
working
when
another
adapter
was
added
to
the
server.
Check
the
following:
v
Make
sure
that
the
cable
is
connected
to
the
Ethernet
controller.
v
Make
sure
that
the
PCI
system
BIOS
code
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
system.
Use
the
Configuration/Setup
Utility
program
to
determine
if
this
is
the
case.
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.
v
Reseat
or
replace
the
adapter.
The
Ethernet
controller
stopped
working
without
apparent
cause.
Check
the
following:
v
Run
diagnostics
for
the
Ethernet
controller.
v
Try
a
different
connector
on
the
hub.
v
Reinstall
the
device
drivers.
See
the
operating-system
documentation
and
the
ServerGuide
information.
v
Reseat
or
replace
the
adapter.
30
xSeries
335
Type
8676,
Type
8830:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide