Installation guide

Fan LED descriptions TABLE 13
LED purpose Color Status Recommended action
OK No light (LED is off) Fan does not have power. Ensure that the fan is
firmly seated and has
power.
Steady green Fan has power. No action required.
Fault No light (LED is off) Fan is either healthy or
does not have power.
Ensure that the fan has
power.
Steady amber Fan has a failure (full or
partial).
Replace the fan.
3. Determine the fan status using the show environment fan command. (Alternately, you can use the
show system command. )
Output for show environment fan command TABLE 14
Output Explanation Recommended action
OK The an is functioning correctly at the displayed speed
(RPM).
No action is required.
absent A fan is not present, or the fan is improperly seated. Contact your Brocade
supplier to order
replacement parts.
below minimum A fan is present but rotating too slowly or stopped.
above maximum The fan is rotating too quickly.
unknown An unknown fan unit is installed.
faulty The fan has exceeded hardware tolerance and has
stopped. In this case, the last known fan speed is
displayed. A faulty indicator could also mean that the
fan is improperly seated.
Determining the status of a CID card
Each CID card has two serial EEPROMS (seeproms). One is the critical seeprom and the other is the
non-critical seeprom. Problems with the critical seeprom cannot be fixed with the CID Recovery Tool.
Only issues with the non-critical seeprom can be addressed.
Regular validation tests are run by the system comparing the CID cards to each other. If the
information is identical, then the chassis is operating correctly. Once a mismatch is detected, an FFDC
message is output to the RASlog. Refer to following table for possible messages.
Messages that may indicate CID card problemsTABLE 15
Error message Issue
[EM-1020]...M1, ERROR ... A problem was found
on one or both CID cards (x), please run the
CIDrecov tool to get more information and
recovery options.
Some kind of error or mismatch has been
detected in the CID card audit.
Determining the status of a CID card
66 Brocade VDX 8770-8 Hardware Installation Guide
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