EMC DS-4900B User Manual

3-8
EMC Connectrix B Series DS-4900B Hardware Reference Manual
Operating the DS-4900B
Interpreting POST results
POST is a system check that is performed each time the switch is
powered on, rebooted, or reset, and during which the LEDs flash
different colors.
To determine if POST completed successfully and whether any errors
were detected:
◆ Verify that the LEDs on the switch indicate that all components
are healthy (LED patterns are described in Table 3-1 on page 3-4
and Table 3-2 on page 3-7). If one or more LEDs do not display a
healthy state:
• 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.
• Follow the recommended action for the observed LED
behavior, as listed in
Table 3-1 on page 3-4 or Table 3-2 on page 3-7.
◆ Verify that diagShow command displays that the diagnostic
status for all ports in the switch is OK.
◆ 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 Manual. For information about
specific error messages, see the Fabric OS System Error Message
Reference Manual.

EMC DS-4900B Specifications

General

Brand	EMC
Model	DS-4900B
Category	Switch
Language	English