Digital Equipment DEC WANcontroller 618 Hoja de instrucciones

Problem Solving

DEC WANcontroller 618

Part Number: EK–A0546–PS.001

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

outlines procedures for checking hardware problems.

Loopback Connectors

DNSXT–CA

H3248

H3198

H3250

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.

50-way loopback connector (male)

V.28, EIA-232D

V.36/V.11, EIA-422

V.35

Loopback Connector

NIC and connecting

cable

Distribution panel

and extension cable

Component

There is no loopback test for the BT Kilostream cable. To check if these cables are

faulty,youmustreplacethemandretesttheline. Ifyouareunabletosolveyourprob-

lem, contact Digital Services.

BT Kilostream

Kilostream is a registered trademark of British Telecommunications, plc.

LKG–5721–91I



NIC 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.

TheNICiseitherwaitingtoloadoris load-

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.

The NIC is partly working.

You can continue to use working port(s),

butyoumustisolateandreplacethefaulty

component as soon as possible.

Aflickering RUN LED indicates

that the NIC software is waiting

to load.

flash

flicker

flash

LKG–5722–91I

For details of tests and procedures, refer to the panel with the matching flag (see overleaf).

or ATTENTION READYFAULT Fast Flicker

The problem could be a loose cable

connection. Check all extension

cables are properly connected.

If this does not solve the problem,

continue along this path of the

flowchart.

Test

successful?

(READY state)

Perform a module loopback

test on the NIC.

Test

successful?

(READY state)

There is a possible problem

with the NIC.

the system

displays on the processor

card display indicate that the

software is loaded and

running?

Load the DECNIS software

through the alternative port.

See the DEC Network

Integration Server Software

Installation card for the load-

host operating system.

Load

successful?

The problem was a faulty

cable.

Replace the distribution

panel.

Perform an NCL loopback

test on the faulty port of

the distribution panel.

Test

successful?

All

tests successful?

Check the local modem

and remote connections –

see DEC Network Integration

Server Problem Solving.

Replace the section of cable

that failed the test.

Perform NCL loopback test on the extension cables.

If there is more than one cable, test all cables in sequence:

1. Test the cable nearest the adapter cable.

2. If that cable passes the test, test the next section of cable.

3. Repeat step 2 until all sections of the cable have been

tested, or the test fails.

Check the LED display on

the processor card, then see

the Installation and Service

Manual for your DECNIS.

LKG-5726–91

Check the operational

communication ports for the

DEC WANcontroller 618.

Take note of the faulty port(s).

Replace the connecting cable.

Load the DECNIS software

through the suspect line.

See the DEC Network

Integration Server Software

Installation card for the load-

host operating system.

Yes

Replace all the extension

cables.

Problem Solving Flowchart – note the NIC LED state and follow the procedure indicated

the system

displays on the processor

card display indicate that the

software is loaded and

running?

If this does not solve your

problem, replace the

distribution panel.

Check the operational

communication ports for the

DEC WANcontroller 618.

Take note of the faulty port(s).

Perform a module loopback

test on the connecting cable.

Yes

Can you

load software through

an alternative port on the

DEC WANcontroller

618 or another

NIC? A

Checking the Operational Communication Ports

W618–3–5

NCL> SHOW NODE server DEVICE UNIT unit–name –

_NCL> ALL STATUS

Device name for

the DEC WAN-

controller 618

where server and unit–nameare the names for the DECNIS and DEC

WANcontroller 618, respectively.

Operational communication ports = {W618–3–0,

W618–3–1, W618–3–2, W618–3–3, W618–3–4, W618–3–6,

W618–3–7}

Port number

For example, if port 5 is faulty, the display reads:

Slot number

1. Start NCL

on the load

host.

2. Enter the following command:

3. Find the attribute “operational communication ports”. This lists the

working ports by device name, where:

4. The working ports, or lines, can still be used. You can continue using

theNICifnecessary,butitisbesttoisolateandreplacethefaultycom-

ponentassoonaspossible. Todothis,followtheproceduresindicated

for the ATTENTION state on the problem solving flowchart.

NCL>

Module Loopback Test

NIC: Connecting cable:

1. MovetheNIC

switch up. 2. Wait until READY LED

stops flashing (max. 2

min)

3. Observe the test 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 Net-

workIntegrationServ-

er Management.

1. Disable the NIC – move the NIC switch down.

2. Attach the 50-way

loopback connector

(male) to the port or

cable to be tested.

3. Run the module loopback test:

4. If the test passes, the LEDs show the RUN state.

If the test fails, the LEDs show the FAULT or ATTENTION state.

5. Disable the NIC. Reconnect the connecting cable if you have to perform

more testing.

(a)

(b)

(a)

(b)

Unfasten

screws

Loopback

connector

flash no

flash

LKG–5723–91I

Unfasten

screws

Loopback

connector

NCL Loopback Test

NCL> STARTLOOP NODE server MODEM CONNECT LINE –

_NCL> line–name MODE CONNECTOR

NCL> LOOP NODE server MOP CIRCUIT circuit [COUNT –

_NCL> integer,] [LENGTH integer,] [DATA type]

1. Start NCL

on the load

host.

2. Attach the cable loop-

back connector to the

port or cable to be

tested.

3. Enter the following command at the NCL prompt:

4. If the test passes, no message is displayed.

If the test fails, an error message is displayed.

Distribution panel port: Synchronous cable:

When the prompt returns, enter the following command:

server name

nameof physical line

circuit name

COUNT, LENGTH, and DATA specify the number of blocks, length, and type of data to be sent

inthetest. Thedefaultsends1blockof40byteswithanalternatingsequenceof1sand0s(hexa-

decimal value=55). For more details, see DEC Network Integration Server Problem Solving.

NCL Command Information

server

line–name

circuit

(a)

(b)

(a)

(b)

Unfasten

screws

Loopback

connector

NCL>

LKG–5724–91I

Loopback

connector

Unfasten

screws

Replacing Faulty Components

If replacingthefaultycomponentdoesnotsolvetheproblem,

checkthe InstallationandServiceManualforyourDECNIS:donot

performanyproceduresinthemanualunlessyouareaserviceper-

son (see the Installation and Service Manual for your DECNIS).

Faulty Components

NIC

Distribution panel

Connecting cable

Extension cable

Action

Installa new NIC. Referto the Installationand

ServiceManual for your DECNIS:DO NOTdo

this unless you are a service person.

Refer to the panel for installing the distribution

panel and connecting cable in the DECWAN-

controller618CablingInformationandSpecifi-

cations card.

Before replacing these components, you

MUST disable the NIC.

Refertothepanelforattachingcommunication

cables in the DECWANcontroller 618 Cabling

Information and Specifications card.

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