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Table 4-1.
LED Indications of Problems
Symptom
Green power supply
LEDs are off.
The Link/Activity LED
for a connected port is
off or does not blink
(and you have reason to
believe that traffic is
present).
The Link/Activity LED
blinks continuously.
The Online LED on an
I/O module is yellow.
The Master LED on a
module in slot 1 or slot 2
is yellow.
The Fault LED is
blinking yellow.
The Fault LED is
steadily yellow.
No LEDs are lit.
204515-C
Probable Cause
The switch is not receiving
AC power.
The switch is experiencing
a port connection problem.
The switch's link partner is
not autonegotiating properly.
There may be a port
configuration error.
Software incompatibility
exists, or the module cannot
communicate with the master
module over the backplane.
This module has detected
system clock generation
failure on its own circuitry.
A chassis failure has been
detected.
A diagnostics failure or
hardware failure has been
detected.
A hardware failure has been
detected.
Corrective Action
Verify that each AC power cord is fastened
securely at both ends and that power is available
at each AC power outlet. Verify that each power
supply is turned on.
See
"Port Connection
Problems" next.
Use the show log command to check the
system log for indications of communication
problems. Use the boot command to download a
new software image.
Replace the module; make sure it is in the correct
slot.
Note: This LED refers only to the module in slot 1
or slot 2 that provides the clock function for the
switch.
From the console management station, use the
show log command to check the system log for
information about hardware failures
Check the fans in the Passport 8100 module
chassis to make sure both are running.
Check the switch power supplies; one may have
stopped functioning.
The module may have failed to read the MAC
address from the chassis backplane. If this is the
case, arrange to replace the chassis.
The module failed its power-on self-test. Replace
the module.
Power cycle the switch.
Troubleshooting
4-3
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