Troubleshooting Using LEDs 6-3

Determining Corrective Action

Table 6-2 identifies appropriate corrective actions for each base module

LED indication.

Table 6-2Base Module LED Corrective Actions

LED

LED State

Possible Cause

Corrective Action

 

 

 

 

MOD STAT

Green

Normal operating indication.

None required.

 

 

 

 

 

Off

No power to hub.

Check the controller module power

 

 

 

LEDs.

The hub does not have enough available power for a new module installation.

Add another power supply to the hub.

Use the SHOW POWER BUDGET command to ascertain available power in the hub.

 

 

The ATM Backbone

Insert a different ATM Backbone

 

 

SwitchModule is faulty.

SwitchModule.

 

 

 

 

 

Yellow

Module failed power-on

Reset ATM Backbone SwitchModule

 

 

diagnostics.

(page 6-12).

 

 

 

 

 

 

 

Re-seat ATM Backbone SwitchModule in

 

 

 

CoreBuilder 5000 hub.

 

 

 

 

 

 

 

Refer to “Recovering from Problems” on

 

 

 

page 6-5.

 

 

 

 

PACKETCHANNEL

Green

SwitchModule is correctly

None required.

 

 

inserted in hub and recognizes

 

 

 

PacketChannel backplane.

 

 

 

 

 

 

Off

ATM Backbone SwitchModule

Re-seat the ATM Backbone

 

 

is not connected to backplane.

SwitchModule in the slot.

Slot does not support PacketChannel operation. To verify, enter the command SHOW MODULE. The General Information field states “ATM Slot” if the slot is reserved for ATM.

Install the ATM Backbone SwitchModule in slots 1 through 8 or 13 through 17.

PacketChannel backplane not installed or incorrectly installed in the hub.

Re-install the PacketChannel backplane or purchase a PacketChannel backplane. Contact your supplier.

 

Yellow

ATM Backbone SwitchModule

None required.

 

 

transmitting heavy traffic levels

 

 

 

to the PacketChannel

 

 

 

backplane.

 

 

 

 

 

 

Yellow

ATM Backbone SwitchModule

None required.

 

Blinking

transmitting normal traffic

 

 

 

levels to the PacketChannel

 

 

 

backplane.

 

 

 

 

 

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Image 89
3Com 5000 ATM manual Determining Corrective Action, LED State Possible Cause Corrective Action