Interpreting LED activity

System activity and status can be determined through the activity of the LEDs on the switch.

The status LEDs can display solid amber or flash during boot, POST, or other diagnostic tests. This is normal; it does not indicate a problem unless the LEDs do not indicate a healthy state after all boot processes and diagnostic tests are complete.

LEDs on the port side of the switch

The port side of the switch has the following LEDs.

One system status LED
One power LED
Management Ethernet port speed and activity LEDs
One port status LED for each Fibre Channel port on the switch
One port status LED for each optical 10/40 GbE port

Figure 1 shows the LEDs on port side of the switch. The port status LEDs for the FC ports are arranged left and right to correspond to the upper and lower ports respectively in each pair.

Figure 1. LEDs on the port side of the switch

1 - System status LED
2 - System power LED
3 - Ethernet Link LED
4 - Ethernet Status LED
5 - FC Port 0 Status LED
6 - FC Port 4 Status LED
7 - 40 GbE FCIP Port 0 Status LED
8 - 40 GbE FCIP Port 1 Status LED
9 - 1/10 GbE FCIP Port 4 Status LED
10 - 1/10 GbE FCIP Port 8 Status LED

Table 1 describes the port side LEDs and their behavior.

Table 1. Port side LED patterns during normal operation
LED name	LED color	Status of hardware	Recommended action
Power status (green)	No light	System is off or there is an internal power supply failure	Verify that system is powered on, the power cables are attached, and your power source is live. If the system power LED is not green, the unit may be faulty. Contact IBM®.
Power status (green)	Steady green	System is on and power supplies are functioning properly	No action required.
System status	No light	System is off or there is no power.	Verify the system is on and has completed booting.
	Steady green	POST and initialization is completed. System is on and functioning properly.	No action required.
	Steady amber (for more than five seconds) Note: It can take over a minute to complete POST	System is going through the power-up process.	No action required.
	Steady amber (for more than a few minutes)	Unknown state, boot failed, or the system is faulty. Note: Once POST completes and the switch has failed, steady amber may result.	Complete the following steps. Connect a serial cable to the system. Reboot the system. Check the failure indicated on the system console. Contact IBM.
	Flashing amber/green	Attention is required. A number of variables can cause this status, including a single power supply failure, a fan failure, or one or more environmental ranges has been exceeded.	Check the management interface and the error log for details on the cause of the status. Contact IBM.
Ethernet Link	No light	There is no link.	Verify that the Ethernet cable is connected correctly.
Ethernet Link	Steady green	There is a link.	No action required.
Ethernet Status/Activity	No light	There is no link activity.	No action required.
Ethernet Status/Activity	Flashing green	There is link activity (traffic).	No action required.
FC port status	No light	Indicates one of the following: No signal or light carrier (media or cable) detected. Switch may be currently initializing. Connected device is configured in an offline state.	Verify the power LED is on, and check the SFP and cable. Verify the switch is not currently being initialized. Verify the status of the connected device.
	Steady green	Port is online (connected to external device) but has no traffic.	No action required.
	Slow-flashing green (on 1/2 second; then off 1/2 second)	Port is online but segmented because of a loopback cable or incompatible extension switch connection.	Verify that the correct device is attached to the switch.
	Fast-flashing green (on 1/4 second; then off 1/4 second)	Port is online and an internal loopback diagnostic test is running.	No action required.
	Flickering green	Port is online and frames are flowing through the port.	No action required.
	Steady amber	Port is receiving light or signal carrier, but it is not online yet.	No action required.
	Slow-flashing amber (on 2 seconds; then off 2 seconds)	Port is disabled because of diagnostics or the portDisable command.	Reset the port. The portCfgPersistentDisable command is persistent across reboots.
	Fast-flashing amber (on 1/2 second; then off 1/2 second)	SFP or port is faulty.	Reset the port. Replace the SFP. Must be a Brocade-branded SFP.
10 GE/40 GE Ethernet port status	No light (LED is off)	Port is offline. No activity.	Verify that the power LED is on; check the transceiver and cable.
10 GE/40 GE Ethernet port status	Steady green	Port is online and active	No action required.

LEDs on the nonport side of the switch

The nonport side of the switch has the following LEDs:

One LED per fan FRU
One AC LED per PSU FRU
One DC LED per PSU FRU

See Figure 1 for a view of the nonport side of the switch. See Figure 2 for the location of the LEDs.

Figure 2. Nonport side LEDs

1 - Power supply DC status LED
2 - Power supply AC status LED
3 - Fan status LED

Table 2 describes the non-port side LEDs and their behavior.

Table 2. Nonport side LED patterns during normal operation
LED name	LED color	Status of hardware	Recommended action
Power supply AC input status (one green LED)	No light	Power supply is not receiving AC input voltage or AC input voltage is below operational limit.	Verify that the power supply is properly seated and the power cord is connected to a functioning AC power source.
Power supply AC input status (one green LED)	Steady green	AC input voltage is within operational range.	No action required.
Power supply DC output status (one bi-color LED)	Flashing amber (1:1)	Output voltage is not enabled.	Verify that the power supply is fully seated and that the captive screw is secured.
	Flashing amber/green (2:1)	Over temperature warning.	Verify that ambient temperature is less than 40° C (104° F) and check for intake airflow blockage.
	Flashing amber/green (1:1)	Internal fan is out of regulation.	Replace the power supply.
	Steady amber	Power supply is faulty or not plugged in completely.	Check the power cord, current, voltage, and temperature to determine the problem.
	Steady green	DC output OK.	No action required.
Fan assembly status (one bi-color LED)	No light (LED is off)	Fan assembly is not receiving power.	Verify that the fan FRU is seated correctly.
	Steady green	Fan assembly is operating normally.	No action required.
	Steady amber (for more than 5 seconds)	One or more of the fans in the fan assembly has failed.	Replace the faulty fan assembly.