Brocade 7800 Extension Switch Hardware Reference Manual - Manual (Page 37)

LEDs on the nonport side of the Brocade 7800
The nonport side of the Brocade 7800 has the following LEDs:
• One power supply LED next to the AC power switch on each fan and power supply assembly. See
Nonport side of the Brocade 7800 on page 17 for a diagram of the non-port side of the switch.
The following table describes the LEDs on the nonport side of the Extension Switch.
Nonport Side LED patterns during normal operation TABLE 5
LED Name LED Color Status of Hardware Recommended Action
Power Supply/ Fan
Status No light Power supply is not seated
correctly. Verify that the power supply is seated
correctly.
Steady green System is on and power
supplies are functioning
properly. No action required.
Flashing green Fault has occurred in the
FRU.
Try the following:
• Check the power cable connection.
• Verify that the power supply is powered
on.
• Run psShow and fanShow commands
to determine the source of the fault.
• Replace the FRU.
Interpreting POST results
POST is a system check that is performed each time the Brocade 7800 is powered on, rebooted, or
reset, and during which the LEDs flash different colors.
Perform the following steps to determine whether POST completed successfully and whether any errors
were detected.
1. Verify that the LEDs on the switch indicate that all components are healthy (LED patterns are
described in LEDs on the port side of the Extension Switch on page 33 and LEDs on the nonport side
of the Brocade 7800 on page 37). If one or more LEDs do not display a healthy state:
a) Verify that the LEDs are not set to "beacon" (this can be determined through the
switchShow command or Web Tools). For information about how to turn beaconing on and
off, see the Fabric OS Administrator's Guide or the Web Tools Administrator's Guide.
b) Follow the recommended action for the observed LED behavior, as listed in LEDs on the
port side of the Extension Switch on page 33 or LEDs on the nonport side of the Brocade
7800 on page 37.
2. Verify that diagShow command displays that the diagnostic status for all ports in the switch is OK.
3. Review the system log for errors. Errors detected during POST are written to the system log, which is
viewed using the errShow command. For more information about this command, see the Fabric OS
Command Reference. For information about specific error messages, see the Fabric OS Message
Reference.
LEDs on the nonport side of the Brocade 7800
Brocade 7800 Extension Switch Hardware Reference Manual 37
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