3Com 6416SW manual Diagnosing Problems from the ATM Media LEDs, Steps to Take

Diagnosing Problems from the ATM Media LEDs

The following section details problems that can occur with ATM media modules.

WRONG SLOT LED is ON.
Explanation:	Either	the	ATM backplane	is	not installed in the ONcore or the ATM
media module has		been	inserted in	an	incorrect slot.
Steps to	Take:

1. Check that the backplane is installed (in the upper part of the ONcore).

2.

Check

that

the

ATM

media

module

has

not

been

inserted in an incorrect

slot

(slot 9,

10,

or

11),

which is

reserved

for

ATM

Switch/Control modules.

No LED

is

ON.

Explanation:

This

is

the

default

behavior

when

you

install

an

ATM

media

module

that

has

never

been

used;

the

ports

are disabled

so

no

light

is

on. If

this

is

not

the

follow

the

steps

below.

Steps

to

Take:

1. Check

that

the

module

is

connected

to

the

backplane

correctly.

Unplug

the

module,

then

plug it back in carefully. When

you feel

that

the

module

is

almost

inserted,

the

levers

to

push

it

in

completely. (see

Figure 2-2

on

page 2-4.)

2.

If

the

ports

are

not enabled, check that the

module

is

working

correctly

by

issu

the

SHOW

MODULE

and

SHOW

PORT

commands.

3.Check that the power budget has not been exceeded. Before adding a power supply, check that this is the real cause, by issuing the SHOW POWER BUDGET

command. If	a	DMM module	is installed, this command	must be issued from the
DMM console. If necessary, add a power supply.
Refer to3ComtheONcore Hub			Installation and Operation(17Guide-00362) to see
if there is	a	problem	associated with the power	budget.

7-4 ONcore ATM Switch/Control Module: Installation and User's Guide