IBM 8271 Nways Ethernet LAN Switch Manuale utente

Part No. 02L1333

Published October 1997

8271 NWAYS ETHERNET LAN SWITCH

ATM OC-3CMODULE

QUICK REFERENCE GUIDE

Pre-Configuration Checklist

Before configuring the ATM OC-3c Module, com-

plete the following steps:

1Install the ATM Module — Installation instruc-

tions are provided in “Installing and Setting Up the

Module” in the ATM Module User’s Guide.

2Check that the ATM Module is correctly

installed in the Switch — Follow the “Post Instal-

lation Checks” as described in “Installing and Set-

ting Up the Module”, in the ATM Module User’s

Guide.

3Check that the Switch is correctly installed in

the network — See the User’s Guide that came

with your Switch.

In this reference guide, the term Switch is used to

identify the device containing the ATM Module.

The term ATM Switch is used to identify the ATM

device that the Switch is connected to on the net-

work.

4Ensure that the LANE Services are correctly set up

on your network, that is, each LAN Emulation Server

(LES) and its associated Broadcast and Unknown

Server (BUS) are operational.

5To communicate with an ATM Switch, the communi-

cation settings on the ATM Module and ATM Switch

must be compatible. Find the following ATM Switch

settings and enter them below:

Signalling Mode

Signalling must be the same on both devices, and

must be either 3.0 or 3.1. The default on the ATM

Module is 3.1.

SONET or SDH?

Both devices must use the same physical standard.

The ATM Module supports SONET STS-3c and SDH

STM-1, and the default is SONET STS-3c.

Both devices must use the same

Interim Local Management Interface (ILMI)

connection.

The default is VPI = 0 and VCI = 16.

ILMI VCC VPI = VCI =

28271 NWAYS ETHERNET LAN SWITCH ATM OC-3CMODULE QUICK REFERENCE GUIDE

Configuring the ATM Module

1Access the Local Management Screens

Refer to “Accessing Management Features” in the

ATM Module User’s guide for instructions.

2Ensure that the ATM Module and ATM Switch

use compatible settings:

aFrom the Main Menu, select the ATM Configura-

tion option. The ATM Module Configuration

screen is displayed. An example of the screen is

shown in Figure 1.

Figure 1 ATM Module Configuration Screen

bEnsure that the signalling mode used by the

ATM Module matches the signalling mode used

on the ATM Switch, either version 3.0 or 3.1.

cEnsure that the ATM Module and the ATM

Switch are using the same physical standard,

either SONET STS-3c or SDH STM-1.

dEnsure that the ATM Module and ATM Switch are

using the same ILMI VCC. The standard ILMI VCC

is VPI = 0, VCI=16.

eIf you do not need to make any changes, select

the CANCEL button. Select the OK button to

apply the changes and automatically reset the

device.

3Ensure that the Default VLAN is operational

aFrom the Main Menu, select the Switch Manage-

ment option. The Switch Management screen is

displayed. An example of the screen is shown in

Figure 2.

Figure 2 Switch Management Screen

bIn the Management Level field ensure that the

Port option is selected. You can use the spacebar

to toggle between the options.

Configuring the ATM Module 3

cEnsure that the Port ID is set to the ATM port

number. The ATM port numbers are as follows:

Port 13 on an IBM 8271 Nways Ethernet LAN

Switch Model 612 and IBM 8271 Nways Ether-

net LAN Switch Model 712

Port 25 on an IBM 8271 Nways Ethernet LAN

Switch Model 624 and IBM 8271 Nways Ether-

net LAN Switch Model 524

dSelect the STATS button.

eThe ATM Port Statistics Screen is displayed.

fSelect the LEC button to displays statistics and

status information for the default VLAN that is

associated with the default ELAN (admin1).

An example of the ATM VLAN LEC Status screen is

shown in Figure 3.

Figure 3 ATM VLAN LEC Status Screen

gIf the default VLAN’s LEC State field displays a

value other than Active, and the Last LEC Failure

Reason shows a value other than None, an error

has arisen; see “Troubleshooting”.

48271 NWAYS ETHERNET LAN SWITCH ATM OC-3CMODULE QUICK REFERENCE GUIDE

Troubleshooting

The most likely error at start-up time is a problem

with the physical connection. Use Table 1 to iden-

tify any problems you encounter after installation. If

you cannot resolve the problem using the table,

refer to the “Troubleshooting” appendix in the

ATM Module User’s Guide.

Table 1 Troubleshooting

1IstheLink

Status LED OFF? Yes

Ensure that the port is turned on

(enabled) at both ends of the link.

You may need to reverse the Transmit

and Receive connectors at one end of

the link.

Go to step 2.

2 Is the Far End

Status LED OFF? Yes

Ensure that the cable is not

obstructed or damaged. Replace dam-

aged cable.

Go to step 3.

3 Has the LEC

joined the

LANE service?

Check the

Last LEC Failure

Reason field on

the ATM VLAN

LEC Status

Screen, as

described in the

previous section

of this guide.

Yes

The Switch is operational, but there is

a problem with the adjacent ATM

Switch, or insufficient resources fur-

ther along the network connection.

Check the ATM Connection using the

Connection Table, as described in “Dis-

playing an ATM Connection” within

the “Managing the ATM Module”

chapter of the ATM Module User’s

Guide.

Ensure that you have completed the

“Pre-Configuration Checklist” at the

start of this guide.

Refer to the Last LEC Failure Reason

troubleshooting table in the “ATM

VLAN LEC Status” section of the

“Monitoring the ATM Module” chap-

ter of the ATM Module User’s Guide.

If you still cannot resolve the problem,

refer to the “Troubleshooting” appen-

dix in the User’s Guide.

Menu Map 5

Menu Map

The local management menu and screen structure

is shown in Figure 4. ATM specific screens are

shaded gray on the map.

Figure 4 ATM Module Screen Map

68271 NWAYS ETHERNET LAN SWITCH ATM OC-3CMODULE QUICK REFERENCE GUIDE

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