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Table 5-10. Interpreting Media Module LEDs
LED
Signal Detect
Port State
Link Error
In addition to the functional LEDs, each module has a power (PWR) LED,
which turns green to indicate the module is on.
Using Miscellaneous Commands
Several commands provide diagnostic and connectivity functions.
Diagnosing Network Problems
The commands described in this section provide statistical information that may
help solve network problems.
Color Indicators
Green
Off
Green
Flashing green/off
Off
Amber
Off
Using the Hub
Meaning
The signal is detected.
No signal exists.
Port is in active connection
state.
Port is in standby connection
state.
Port is in disabled or
connecting state.
Link confidence test failure:
link error rate cutoff threshold
has been exceeded, triggering
an alarm.
Port is operating normally.
5-17
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