6-2CHAPTER 6: TROUBLESHOOTING

When you press the LED test button:

1The Controller Module initiates a test to all modules in the hub. All LEDs should respond by lighting continuously for approximately

5 seconds.

2During this time, the bi-color LEDs should alternate between green and yellow approximately every ½ second.

See Appendix B for instructions about contacting 3Com Technical Support for your product.

Reading the Base Module LEDs

Table 6-1 identifies the normal phases of operation of the base module LEDs upon power-on or hardware reset.

Table 6-1Base Module LED Status

Module Status

LED State

 

 

 

 

 

MOD

PACKET

 

STAT

CHANNEL

 

 

 

Prior to power-on

Off

Off

 

 

 

Diagnostics upon power-on

Yellow

Off

 

 

 

Failed diagnostics

Yellow

Green

 

 

 

Passed diagnostics; ready to exchange data

Green

Green

 

 

 

Receiving ATM cells and forwarding them to

Green

Yellow

the packetchannel backplane

 

 

 

 

 

Module problem indications during normal

Steady yellow or

Off

operation*

Off

 

* Refer to Determining Corrective Action.

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3Com 5000 ATM manual Reading the Base Module LEDs, Module Status LED State