Fabric OS Reference Manual

252 Fabric OS Reference Manual
Resetting Bad Ports
If any port fails during a diagnostic test, it is marked
BAD
in the status
display.
To retest a port that has been marked
BAD
, clear the port and set to OK
using the
diagClearError (port#)
command. This command clears
the port status only and does not clear the logs or change the port’s
condition. The
diagClearError (port#)
command should only be
used during diagnostic procedures to reset a bad port for retest.
POST Test Commands
When the switch is booted, a series of commands are executed to test the
hardware of the switch. This procedure is called the POST (power on self
test).
The Fabric OS POST includes the tests in the following table.
For more information about these tests, see the individual command
descriptions in Chapter 1.
Note
The cold boot (power reset) runs the long ramTest, while the warm
boot (software reset) runs the short ramTest.
Table 15. Post Tests
Command Description
ramTest Bit write / read test of SDRAMS in the switch.
portRegTest Bit write / read test of the ASIC SRAMs and
registers.
centralMemoryTest Bit write / read test of the ASIC central memory.
cmiTest ASIC to ASIC connection test of the CMI bus.
camTest Functional test of the CAM memory.
portLoopbackTest Functional test of switch by sending and
receiving frames from the same port.