LED name
LED color
Status of hardware
Recommended action
Fast-flashing
amber (on 1/2
second, off 1/2
second)
Port is faulty
.
Check the Port St
atus LEDs, error
log, transceiv
er, and cable or
loopback plug.
Clear the error
log. Rerun the
diagnostics to
verify that the error condition is
fixed.
Alternating
green and
amber
Port is bypassed.
Check configuration of FC loop.
POST and boot specifications
POST is a system check that is performed each time the switch is p owered on, rebooted, or reset. During
POST, the LEDs flash different colors. Any errors that occur during POST are listed in the error log.
The8GbSANSwitchperformsPOSTwhenitisturnedonorrebooted. TotalboottimewithPOSTis
approximately three minutes.
POST can be omitted for subsequent reboots by using the fastboot command. For more information
about this command, refer to the latest version of the Fabric OS command reference guide.Ifyoususpect
a pro blem with the switch, enable POST to obtain more information on any failure.
POST
The success/failure results of the diagnostic tests that run during POST can be m onitored through the
error log or the command line interface.
POST includes the following steps:
• Prelimi
nary POST diagnostics are run.
• Operating system is initialized.
• Hardware is initialized.
• Diagno
stic tests are run on several functions, including circuitry, port functionality, memory,
statistics counters, and serialization.
Boot
Boot completes in appr oximately three minutes if POST is r un . Boot includes the following tasks after
POST completes:
• Universal port configuration
• Links initialized
• Fabric is analyzed; if any ports are connected to other switches, the 8Gb SAN Switch participates
in a fabric configuration
• The 8Gb SAN Switch obtains a domain ID and assigns port addresses
• Unicast routing tables constructed
• Normal port operation enabled
Interpreting POST results
To determine whether POST completed successfully and whether any errors were detected:
1.
Ver
ify tha t the 8Gb SAN Switch LEDs indicate all components are healthy. See Table 16, page 35
for
description and interpretation of LED patterns. If one or more LEDs do not display a Healthy state,
use the switchshow command to verify that the LEDs on the switch are not set to “beacon”.
36
Managing the 8Gb SAN Switch
