© Copyright Lenovo 2016
Chapter 2: Installing and Removing the SI4091
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Information LEDs
The front panel of the switch has LEDs for system and port status. The Power,
Locator, and Error LEDs indicate the switch status. The Link (LINK) and Activity
(TX/RX) LEDs indicate the status of the external ports.
Notes:
A yellow LED on the Lenovo Flex System chassis is lit when a system error or
event has occurred. To identify the error or event, check the Lenovo Flex System
management-module event log or the switch system log.
During POST, the switch Power LED continuously flashes. Additionally, all of
the switch status LEDs and the licensed Port LEDs are lit as a visual indication
they are working. Once POST has successfully completed, the switch Power
LED remains on and the switch Error LED is off.
Any errors that are detected during POST are written to the system log. For
information about the command to read the system log, see the
Command Reference
for the switch.
When POST errors are written to the system log, these errors are also written to the
Lenovo Flex System management-module event log. If a hardware error, such as a
current fault occurs, the CMM displays it. If a firmware error occurs, the CMM
displays the
Module
did
not
complete
POST
message and a post error code that
indicates the test that was running when the error was detected.
Note:
You can also use the CMM to make sure that the switch is operating
correctly. For more information, see the CMM documentation.
