3Com 6416SW manual Chapter Troubleshooting, Led

Chapter 7.

Troubleshooting

This chapter describes how to diagnose and solve problems associated with the installation and operation of the 6416SW and ATM media modules. Troubleshooting operations are described according to the phase in which they are necessary.

Phase

1

Problems

that

occur

during

installation, after

turning

ON

the

hub,

and

after

resetting

the

ATM

subsystem. This

phase

ends

when

the 6416SW

ACTIVE

LED

lights

ON

(yellow).

Phase

2

Problems

that

occur from when the ACTIVE LED lights ON (yellow) to

when

all

the

configuration

tasks

described

in

Chapter 5,

“Configuring

the

ATM

Switch/Control

Module”

on

page 5-1

are

complete. No

ATM

devices

are

connected

to the ports. This phase ends when the

status

of

all

ATM

media portsNOisACTIVITY.

Phase

3

Problems that occur from when the ATM subsystem is successfully

configured

and

the

6416SW

console is attached to when

all

ATM

devices

are

connected

to

ATM media

ports in the hub. There is

still no

ATM

traffic

in

the

network. This

phase

ends when the status of all

ATM

media

ports

is OKAY

and ATM

traffic

begins.

Phase

4

Problems

that

occur

after

all ATM

devices

are successfully

attached

to

ATM

media

ports

and

ATM

traffic

is started in the network.

The

problems

in

this

phase

concern

interruptions

to

the

normal

operation

of

the

network.

7-1