2
.4
Troubleshooting
802.3
INTERFACE
2.4.2
User Self Diagnostics Description (Sheet 3
of
4)
Test
O
Test 0
resets
the adapter causing the
self-test
routines
to
be
executed.
These include
80186
and
82586
ini-
tialization, memory
and
internal
and
external
loop
back
tests.
The
results
are passed back
to
the host
and
dis-
played. If communication between the
host
and
adapter cannot
be
estab-
lished,
an
error
message is displayed.
Test
1
Test 1
tests
the interface between
the host
and
the adapter using pro-
grammed 1/0 data transfers.
Test
2
Test 2
tests
the interface between
the host
and
the adapter using OMA
data transfers.
Test
3
Test 3 performs a transmit
test
and,
if successful, a loopback
test.
The
transmit
test
checks
for
the
correct
status
from the
82586
LAN control-
ler following transmits.
The
loopback
test
further
compares the received
packets with those transmitted.
Test
4
Test 4
tests
the
82586
LAN control-
ler address matching functions.
The
receiver
is configured
to
various
modes: station only, multicast, broad-
cast,
and
promiscuous.
In
each
mode,
packets of differing destination ad-
dress
and
size are transmitted
and
the
ability of the adapter
to
reject or
accept packets properly is tested.
Test
5
Test 5 performs packet exchange with
another
PC
or
server
on
the network.
The
PC
transmits
an
''echo request
packet" into the network. A respond-
ing
server
or
PC
will
tn.nsmit
the
packet (echo)
back
to
the
PC
under
the
test.
741-1859
Page
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COMPANY
CONFIDENTIAL
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