Digital Equipment DEC LANcontroller 601 Instruction sheet

Problem Solving
DEC LANcontroller 601
Part Number: EK–A0554–PS.001
Digital Equipment Corporation. 1992. All Rights Reserved.
1

Users are referred to
these cards if there is
apossible problem
with the line card and
its components.
DEC Network Integration Server Problem Solving
DECNIS Problem Solving Manuals
Network Interface Card (NIC) Problem Solving cards: are supplied with each NIC.
ThecardsoutlineproceduresforcheckingpossibleproblemswithNICs, theircables,
distribution panels and modems. Start problem solving with the flowchart.
DECNIS Installation and Service Manual: includes a problem solving section which
describes procedures for checking hardware problems.
Loopback Connectors
H4080
Part Number
DEC Network Integration Server Problem Solving: outlines NCL commands for
checking software problems.
DEC Network Integration Server Event Messages: this is an on-line text
file. Thefilelistseventmessagesthatcanindicatefaultswithhardwareand
software. The event message describes the meaning of each event and
what action to take.
Ethernet loopback connector
Loopback Connector
NIC and Ethernet
cable
Component
LKG–5721–91I
2

Line Card LED States
Slow flash
Fast flicker
READY
HOTSWAP
FAULT
ATTENTION
The LED display shows the state of the NIC when the module self-test
orsystemself-testwaslastrun:seetheInstallationandServiceManual
for your DECNIS for more details.
Module self-test in progress.
TheNICiseitherwaitingtoloadorisload-
ing software.
The NIC has passed its module self-test
andhassuccessfullyloadedthesoftware.
The NIC is disabled.
(The NIC switch is set down.)
The NIC has failed its module self-test.
This indicates one of the following:
Aflickering RUN LED indicates
that the NIC software is waiting
to load.
1. The Ethernet is not connected.
2. TheNICisfaulty.
flash
flicker
flash
LKG–5722–91I
3

For details of tests and procedures, refer to the panel with the matching flag (see overleaf).
C
C
C
Check the LED display on
the processor card, then see
the Installation and Service
Manual for your DECNIS.
The ATTENTION state was
shown because the Ethernet
was not properly connected.
Does the
FAULT LED
go out?
There is a possible problem
with the NIC.
No
Yes
Test
successful?
(READY state)
Replace the Ethernet
cable.
The fault is either at the
Ethernet connection device
or the Ethernet – see the
appropriate manuals.
Check the Ethernet cable
is properly connected.
Wait for 2–3 minutes.
No
Test
successful?
(READY state)
Yes
Yes
Yes
Test
successful?
(READY state) There is a possible problem
with the NIC.
C
No
Replace the Ethernet
cable.
No
LKG–5733–91I
Test
successful?
(READY state)
No
Yes
or ATTENTION READY FAULT Fast Flicker
A
Complete the module
loopback test on the
Ethernet cable.
B
Perform a module loopback
test on the Ethernet cable.
A
Complete the module
loopback test on the NIC.
B
Perform a module loopback
test on the NIC.
Problem Solving Flowchart – note the NIC LED state and follow the procedure indicated
4

Completing the Module Loopback Test
1. Attach the Ethernet
loopback connector
(H4080) to the NIC
portorEthernetcable.
2. Wait until the FAULT LED goes out (approx. 2 min). Observe the
test result on the LED display.
3. If the test passes, the LEDs will show the READY state.
Ifthetestfails,theLEDswillshowtheATTENTIONorFAULTstate.
NIC: Ethernet cable:
NOTE
If loading has been dis-
abled for this slot, the
READY LED will not
stopflashing.Toenable
theslot,seethemanual
DEC Network Integra-
tion Server Manage-
ment.
(a)
(b)
(a)
(b)
Slide up
clip
Ethernet
connection
device
Loopback
connector
Slide up
clip
Loopback
connector
flash no
flash
A
LKG–5731–91I
5

Performing a Module Loopback Test
NIC: Ethernet cable:
(a)
(b)
(a)
(b)
Slide up
clip
Loopback
connector
Slide up
clip
Ethernet
connection
device
Loopback
connector
B
LKG–5732–91I
1. MovetheNIC
switch down. 2. Wait until the hot- swapLEDlightsup
(approx. 2 s).
3. Move the NIC
switch up.
4. Wait until the READY
LED stops flashing
(max. 2 min).
5. Observethetest
result on the
LED display. NOTE
If loading has been
disabled for this slot,
the READY LED will
not stop flashing. To
enable the slot, see
the manual DEC
Network Integration
Server Manage-
ment.
flash no
flash
LKG–5727–91I
1. Attach the Ethernet
loopback connector
(H4080) to the NIC
portorEthernetcable.
2. Run the module loopback test:
3. If the test passes, LEDs show the READY state.
If the test fails, LEDs show the ATTENTION or FAULT state.
6

Replacing Faulty Components
If replacingthefaultycomponentdoesnotsolvetheproblem,
checkthe InstallationandServiceManualforyourDECNIS:donot
perform any procedures in the manual unless you are a service
person(seetheInstallationandServiceManual foryourDECNIS).
NIC
Ethernet cable
InstallanewNIC. RefertotheInstallationand
ServiceManual foryourDECNIS:DONOTdo
this unless you are a service person.
Refer to the panel for attaching cables in the
DEC LANcontroller 601 Cabling Information
and Specifications card.
Faulty Components Action
C
7