Led Indicators - Cisco Catalyst 6840 Series Hardware Installation Manual

Product Overview
The fan tray contains four high-efficiency fans with variable speed settings and thermal sensors. If one fan
fails, the speed of the others is increased and a minor alarm is triggered. If a major fan tray failure occurs, the
system is shut down. The individual fans are not field replaceable; the entire fan tray must be replaced in the
event of a major fan tray failure. See
the fan.
Related Topics

LED Indicators

You can use the switch LEDs to monitor switch activity and performance. You can also monitor the status of
the fan tray assembly, and the power supplies.
Front Panel Components
Fan Tray LED, on page 17
Removing the Fan Tray, on page 61
Catalyst 6840-X Switch Series Hardware Installation Guide
LED Indicators
for additional information about
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