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System Fault LED (amber)
The System Fault LED illuminates to indicate an over temperature condition or a POST error. Also
illuminated on an internal firmware error (heartbeat blink 2), voltage fault, or corrupt config error
(heartbeat blink 4).
Heartbeat LED (green)
The Heartbeat LED indicates the status of the internal switch processor and the results of the POST.
Following a normal power-up, the Heartbeat LED blinks about once per second to indicate that the switch
passed the POST and that the internal switch processor is running. In maintenance mode, the Heartbeat
LED illuminates continuously. See
Heartbeat LED blink patterns.
Power LED (green)
The Power LED indicates the voltage status at the switch logic circuitry. During normal operation, this LED
illuminates to indicate that the switch logic circuitry is receiving the proper DC voltages. When the switch is
in maintenance mode, this LED is extinguished.
Maintenance button
The Maintenance button shown in
purpose is to reset the switch or to place the switch in maintenance mode. Maintenance mode sets the IP
address to 10.0.0.1 and provides access to the switch for maintenance purposes when flash memory or
the resident configuration file is corrupted. See
page 41 for more information about using maintenance mode. The Maintenance button can be used if the
user forgets the switch IP address or admin password.
Resetting a switch
Press and release (less than 2 seconds) the Maintenance button using a pointed tool to momentarily to reset
the switch. The switch will respond as follows:
•
All switch LEDs will illuminate, then the System Fault LED extinguishes, leaving only the Power LED
illuminated.
•
After approximately 1 minute, the POST begins.
•
When the POST is complete, the Power LED is illuminated.
Placing the switch in maintenance mode
To place the switch in maintenance mode, perform the following procedure:
1.
Isolate the switch from the fabric.
2.
Press and hold the Maintenance button with a pointed tool for 10 seconds. The maintenance mode
firmware initializes.
To exit Maintenance mode and return to normal operation, perform the following procedure:
1.
Press and release the Maintenance button momentarily to reset the switch.
"Heartbeat LED blink
patterns" on page 36 for more information about
Figure 2
is a dual-function momentary switch on the front panel. Its
"Recovering a switch using maintenance
McDATA® 4Gb SAN Switch for HP p-Class BladeSystem installation guide
mode" on
13
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