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6-2
C
HAPTER
6: T
ROUBLESHOOTING
When you press the LED test button:
1
The Controller Module initiates a test to all modules in the hub. All
LEDs should respond by lighting continuously for approximately
5 seconds.
2
During 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 6-1
Base Module LED Status
Module Status LED State
MOD
STAT
PACKET
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
the packetchannel backplane
Green Yellow
Module problem indications during normal
operation
*
*Refer to Determining Corrective Action.
Steady yellow or
Off
Off