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.
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.
v
Determine
whether
the
hub/switch
supports
auto-negotiation.
If
it
does
not,
try
configuring
the
integrated
Ethernet
controller
manually
to
match
the
speed
and
duplex
mode
of
the
hub/switch.
v
Check
the
Ethernet
controller
LEDs
on
the
rear
of
the
server.
These
LEDs
indicate
whether
there
is
a
problem
with
the
connector,
cable,
or
hub/switch:
–
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/switch
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/switch.
If
the
LED
is
off,
there
might
be
a
defective
connector
or
cable
or
a
problem
with
the
hub/switch.
v
Make
sure
that
you
are
using
the
correct
device
drivers,
which
are
supplied
with
the
server.
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
protocol.
v
Test
the
Ethernet
controller.
The
way
the
Ethernet
controller
is
tested
depends
on
which
operating
system
you
are
using
(see
the
Ethernet
controller
device
driver
readme
files).
Ethernet
controller
troubleshooting
chart
Use
the
following
troubleshooting
chart
to
find
solutions
to
10/100/1000
Mbps
Ethernet
controller
problems
that
have
definite
symptoms.
Description
FRU/action
The
server
stops
running
when
loading
device
drivers.
The
PCI
BIOS
interrupt
settings
are
incorrect.
v
Determine
whether
the
interrupt
(IRQ)
setting
that
is
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
that
is
available
from
the
World
Wide
Web.
v
Reseat
or
replace
the
adapter.
Chapter
5.
Diagnostics
101
Summary of Contents for 884155U
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