Power On Systems Check - Fibre Channel Hub
Power-on the storage modules first, then the controller and the Fibre Channel Hub, then everything else.
NOTE: Make sure the Fibre Channel Hub is powered on before the host adapter to insure proper loop
initialization.
To insure proper operation:
NOTE: FC-AL compatible nodes must perform loop initialization
LED On
This indicates that a GBIC is present and functioning properly.
LED Off
This indicates a fault condition.
Examples of a fault condition include: a GBIC transmitter fault,
an improperly seated GBIC, an absent GBIC, or another failed device.
The port will be in the bypass state, which precludes the port from
participating in the FC-AL. This is the normal status of operation for
Fibre Channel Hub ports in which GBICs are not installed.
procedures at power-on to function properly on the loop.
The Fibre Channel driver software on FC-AL nodes performs the loop initialization
or re-initialization depending on its prior state of operation.
Bypass Amber LEDs on Bottom Row
LED On
If the Active (green) LED of the port is off, the port is non operational
and the Bypass (amber) LED for the port is on.
If a properly functioning port (the Active green LED is on) with a GBIC present
also has the Bypass LED on, either the loss of signal or poor signal integrity
has caused the port to go into the bypass state.
When the port is in this state, it cannot participate in the FC-AL.
The bypass state is also the normal status condition when no GBIC is present
in the port, a GBIC present but not attached to a FC-AL node,
or a GBIC is attached to a cable assembly with nothing attached at the opposite end.
Replacing such a port (or removing and reinserting the GBIC into the same port twice)
is considered to be a loop configuration change which invokes the Loop Initialization
Procedure.
LED Off
This indicates that the Fibre Channel Hub port and device are fully operational
and actively participating in the FC-AL.
Please see the LEGAL - Trademark notice.
Feel free - send a for any BUG on this page found - Thank you.